iiililiili^ EuroPean Patent Office @ ^-S Office europeen des brevets EUROPEAN (12) (fi) Publication number: 0 4 0 8 031 B1 PATENT S P E C I F I C A T I O N @ Date of publication of patent specification : 12.10.94 Bulletin 94/41 @ Int. CI.5 : G11C 7 / 0 0 (21) Application number: 90113338.9 (22) Date of filing : 12.07.90 (54) Data read circuit for semiconductor storage device. (§) Priority: 12.07.89 JP 179816/89 (43) Date of publication of application : 16.01.91 Bulletin 91/03 @ Publication of the grant of the patent : 12.10.94 Bulletin 94/41 @ Designated Contracting States : DE FR GB (56) References cited : EP-A- 0 235 889 EP-A- 0 313 748 US-A- 4 239 994 IEEE INTERNATIONAL SOLID STATE CIRCUITS CONFERENCE, vol. 30, 27 February 1987,NEW YORK US pages 264 - 265; OHTANI ET AL: 'A 25ns 1Mb CMOS SRAM' and page 420 (72) Inventor : Hoshi, Satoru 4-7-1-412, Tote, Saiwai-ku Kawasaki-shi, Kanagawa-ken (JP) Inventor : Kawaguchi, Takayuki 3-16-5-106, Namamugi, Tsurumi-ku Yokohama-shi, Kanagawa-ken (JP) Inventor : Masuda, Masami 5, Murato-So, 594, Kamihirama, Nakahara-ku Kawasaki-shi, Kanagawa-ken (JP) (74) Representative : Lehn, Werner, Dipl.-lng. et al Hoffmann, Eitle & Partner, Patentanwalte, Postfach 81 04 20 D-81904 Miinchen (DE) @) Proprietor : KABUSHIKI KAISHA TOSHIBA 72, Horikawa-cho Saiwai-ku Kawasaki-shi Kanagawa-ken 210 (JP) Proprietor : TOSHIBA MICRO-ELECTRONICS CORPORATION 25-1, Ekimae-hon-cho Kawasaki-ku Kawasaki-shi Kanagawa-ken ^ (JP) CO CO o 00 o LU Note : Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid (Art. 99(1) European patent convention). Jouve, 18, rue Saint-Denis, 75001 PARIS 1 EP 0 408 031 B1 Description FIELD OF THE INVENTION The present invention relates to a data read circuit for a semiconductor storage device, and more particularly to a data read circuit for a semiconductor storage device of the type that data lines are equalized. BACKGROUND OF THE INVENTION Fig. 1 is a block diagram of a data output circuit for a semiconductor storage device incorporated herein to disclose the background art of this invention. As seen from Fig. 1, data are read from a memory cell 11 via bit lines N1 and N2. The data on the bit lines N1 and N2 are equalized by a bit line equalizing transistor Tr1. The bit line N1 is connected to a data line N3 via a column selecting transistor Tr11. The bit line N2 is connected to a data line N4 via a column selecting transistor Tr1 2. The transistors Tr11 and Tr12 are controlled byacontrol line N11 to turn on or off so that the bit lines N1 and N2 are connected to or disconnected from the data lines N3 and N4, respectively. To the control line N1 1, there is applied a decoded signal of an address signal. The data lines N3 and N4 are equalized by an input/output line equalizing transistor Tr2. The input/output lines N3 and N4 are connected to a first sense amplifier (differential amplifier) 21 . All sense amplifiers in the following description are made of a differential amplifier whose data relationship is shown in Fig. 2. The outputs from the first sense amplifier 21 are delivered onto first sense amplifier output data lines N5 and N6. Between the first sense amplifier output data lines N5 and N6, there is connected a data line equalizing transistor Tr3. The outputs from the first sense amplifier 21 are equalized by the transistor Tr3. The data on the data lines N5 and N6 are inputted to a second sense amplifier 22. The outputs from the amplifier 22 are delivered to second sense amplifier output data lines N7 and N8. Between the data lines N5 and N7, there is connected an input/output shorting transistor Tr5. Between the data lines N6 and N8, there is connected an input/output shorting transistor Tr6. The transistors Tr5 and Tr6 operate to short the inputs and outputs of the second sense amplifier 22. The second sense amplifier output data lines N7 and N8 are connected to an output buffer amplifier 25 whose particular configuration is shown in Fig. 3. An output equalizing transistor Tr4 is connected between the data lines N7 and N8 on the input side of the output buffer amplifier 25, to equalize the data on the lines N7 and N8. There are connected to the output side of the output buffer amplifier 25, output buffer transistors Tr21 and Tr22. Data is outputted from the interconnection node of the transistors Tr21 and Tr22. 5 10 15 20 25 30 35 40 45 so 55 2 2 An equalizing pulse d>eq is supplied from an equalizing pulse generator circuit 40 to the gates of the transistors Tr1 to Tr6. The equalizing pulse generator circuit 40 is controlled by a detector circuit 30 which detects a change in address signal. The detector circuit 30 is constructed of input transition detector circuits 31, 32, ... to which applied are addresses IN1, IN2 respectively. Each of the input transition detector circuits 31, 32, ... has a circuit configuration such as shown in Fig. 4. Signal waveforms at various nodes of each of the circuits 31, 32, ... are shown in Fig. 5. The relationship between the detector circuit 30 and equalizing pulse generator circuit 40 is shown in Fig. 6. The number of inverters IV in the circuit 40 depends upon the capacitance of a load connected to this circuit. Next, the operation of the circuit shown in Fig. 1 will be described with reference to the timing chart shown in Figs. 7 and 8 the difference between which is the width of a pulse shown in Figs. 7(b) and 8(b). Referring to Figs. 7 and 8, Figs. 7(a) and 8(b) represent the transition state of address inputs IN1 and IN2, Figs. 7(b) and 8(b) represent the equalizing pulse <3>eq> Figs. 7(c) and 8(c) represent the state of the first sense amplifier output data lines N5 and N6, Figs. 7(d) and 8(d) represent the state of the second sense amplifier output data lines N7 and N8, and Figs. 7(e) and 8(e) represent the state of an output (N9). At time t1, addresses IN1, IN2, ... transit. The intransition detector circuits 31 , 32, detect address put transition. The detected signal is supplied to the equalizing pulse generator circuit 40 which accordingly outputs the equalizing pulse d>eq as shown in Fig. 2(b) at time t2 in synchronization with the address change. This equalizing pulse <Peq causes the transistors Tr1 to Tr6 to turn on during the period from time t2 to t3. Namely, the transistor Tr1 is turned on to short the bit lines N1 and N2, the transistor Tr2 is turned on to short the data lines N3 and N4, the transistor Tr3 is turned on to short the data lines N5 and N6, and the transistor Tr4 is turned on to short the data lines N7 and N8. Accordingly, the pairs of data lines are made the same potential because of shortcircuits. At the same time, the input/output shorting transistors Tr5 and Tr6 turn on to short the inputs and outputs of the second sense amplifier 22. Accordingly , the potentials of the outputs of the first and second sense amplifiers 21 and 22 take a certain potential Veq determined by the characteristics of transistors constituting the amplifiers, as shown in Figs. 7(c) and 7(d). When the equalizing pulse <Peq falls down at time t3, the transistors Tr1 to Tr6 turn off. The data from the new memory cell selected by the new address are read via the bit lines N1 and N2, and column selecting transistors Tr11 and Tr12, to the data lines N3 and N4. The data are supplied via the first and second sense amplifiers 21 and 23, and output buffer amplifier 25 to the output buffer transistors Tr21 and Tr22. An out- 3 EP 0 408 031 B1 put as shown in Fig. 7(e) is obtained at the output node N9. With the above operation, data can be read from a memory cell without adversely affected by the contents of cell data at the preceding address. In the above-described data output device, the equalizing pulse performs an equalization function as well as a function to inhibit data on the data lines to be transferred during the equalization operation. In order to read data from a memory cell at high speed, it is necessary to speed up the fall time of the equalizing pulse ©eq- It is necessary therefore (1) to make the pulse width of the equalizing pulse narrow or (2) to shorten the period from when an address transition is detected to when the equalizing pulse <Peq rises. However, if a sufficient equalizing effect is desired by using the equalizing pulse d>eq having a short pulse width, it becomes necessary to obtain a high conductance gm of the transistors Tr1 to Tr6, which generally results in an increase of the gate width of a MOS transistor and hence in an increase of the gate capacitance. The increase of the gate capacitance results in an increase of the load capacitance C(<Peq) connected to the equalizing pulse generating circuit 40. However in general, the number of stages of logical circuits (five stages of inverters IV in the case of Fig. 6) of the equalizing pulse generator circuit 40 is designed as small as possible to the extent that its load having the capacitance C(<Peq) can be driven without delay and the equalizing pulse d>eq can rise and fall at high speed. Because of this, the number of stages of logical circuits cannot be reduced. If the number of stages were reduced, the establishment of a pulse could be quickened but the load could not be driven sufficiently. Apart from the above, there is another problem associated with the operation of the transistors Tr5 and Tr6 for shorting the inputs and outputs of the second sense amplifier 22. Specifically, upon establishment of the equalizing pulse <Peq> the transistors Tr5 and Tr6 shortthe inputs and inverted outputs of active elements of the second sense amplifier 22 so that the active elements enter a negative feedback operation. Therefore potentials at the inputs and outputs oscillate and converge to the potential Veq. If the width of the equalizing pulse d>eq is made shorter, this pulse may start terminating before the oscillation converges sufficiently. In this case, as shown in Figs. 8(c) and 8(d), convergence of oscillation of the potentials at the data signal lines N5 and N6 is not satisfactory at time t3 when the equalizing pulse d>eq starts falling down. The second sense amplifier 22 therefore amplifies an insignificant potential difference between the data signal lines N5 and N6, resulting in a considerable read time delay. As seen from the foregoing description, it is necessary to set the width of the equalizing pulse <Peq to have a sufficient margin. The need to broaden the pulse width has been an obstacle 5 10 15 20 25 4 against high speed data read. As described above, the equalizing method for a data output device according to the background art does not provide stable data read at high speed, which has been a bottleneck for high system performance, especially for multi-bit systems having a number of data lines. EP-A-0 235 889 discloses a differential sense amplifier whose pair of input lines is equalised by a first switch, whose pair of output lines is equalised by a second switch, and whose said switches are operated by different equalising pulses (<P1,<I>2). US-A-4,239,994 discloses a sense amplifier havbetween the input line (30) and the output line (32) ing feedback circuit a including a feedback switch (TG1) operated by a pre-charge pulse for precharging, ie. offsetting the amplifier's input to an operation value enabling quick response. Above EP-A-0 235 889 combined with above USA-4,239,994 would lead to provide the sense amplifier as known from EP-A-0 235 889 with the feedback circuit as known from US-A-4,239,994, but would leave open if one - and if so - which one of the equalising pulses (0>1,0>2) according to EP-A-0 235 889 could or should be used to operate said feedback switch. SUMMARY OF THE INVENTION 30 35 40 45 50 55 3 The present invention has been made in consideration of the above problems and aims at providing a data read circuit for a semiconductor storage device capable of shortening the time required for equalizing the data lines during a data read cycle, and realizing high speed access. This problem is solved as indicated in claims 1 and 7. A first equalizing pulse is applied to second switching means for equalizing the outputs of a sense amplifier having complementary data lines for receiving input data, and is applied to third switching means for equalizing the input and output of the sense amplifier. A second equalizing pulse establishing earlier than the first equalizing pulse is applied from second equalizing pulse generator means to first switching means connecting said input data lines. As a result, the output state of the sense amplifier is substantially established in accordance with the equalizing results obtained by first switching means. Thereafter, in accordance with the first equalizing pulse, the equalizing operation is carried out stably at high speed. As stated above, according to the present invention, it is possible to realize an establishment of an equalizing pulse at an earlier timing and a setting of short pulse width. Accordingly, the terminating timing of the equalizing pulse can be quickened, and high speed reading of data from a memory cell can be realized without considerably modifying a conventional 5 EP 0 408 031 B1 system. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a data read circuit according to the background art; Fig. 2 illustrates the input/output relationship of the sense amplifier; Figs. 3 and 4 show the configuration of the output buffer and address input transition detector circuit, respectively; Fig. 5 is a timing chart illustrating the operation of the circuit shown in Fig. 4; Fig. 6 shows the configuration of the address input transition detector circuit and equalizing pulse generator circuit; Figs. 7 and 8 are timing charts illustrating the operation of the circuit shown in Fig. 1; Fig. 9 shows an embodiment of this invention; Fig. 10 is a timing chart illustrating the operation of the embodiment circuit shown in Fig. 9; Fig. 11 shows examples of the address input transition detector circuit, first and second equalizing pulse generator circuits; Fig. 12 shows another embodiment of this invention; and Figs. 13 and 14 show modifications of the embodiment shown in Figs. 9 and 12, respectively. DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of this invention will be described with reference to the accompanying drawings. Fig. 9 is a block diagram showing the data output device according to an embodiment of this invention. In Fig. 9, like elements to those shown in Fig. 1 are represented by using identical reference numerals. As seen from Fig. 11, a first equalizing pulse generator circuit 41 shown in Fig. 9 has the same structure as that of the equalizing pulse generator circuit 40 shown in Fig. 1. A load capacitance C(<Peq) is coupled to this circuit 41 . The circuit 41 generates a first equalizing pulse <Peq in accordance with the address change detection signal from input transition detector circuits 31, 32, This equalizing pulse is applied to transistors Tr1 , Tr2, Tr5, Tr6, and Tr4. Asecond equalizing pulse generator circuit 42 generates a second equalizing pulse <Peq' in accordance with the address change detection signal from the input transition detector circuits 31, 32, This equalizing pulse is <Peq' is applied to an data line equalizing transistor Tr3. This circuit 42 is constructed as shown in Fig. 11. Since the load capacitance C (<3>eq') connected to the circuit 42 is smaller than the load capacitance C (<Peq) connected to the circuit 41 , the number of stages of logical circuits (inverter IV) of the circuit 42 is "3" which is smaller than "5" of the circuit 41. The other 5 10 15 20 25 30 35 40 45 so 55 4 6 structure is similar to that shown in Fig. 1. The operation of the data output device constructed as above will be described with reference to the timing chart shown in Fig. 10. Fig. 10(a) represents the state of change in address inputs IN1, IN2 Fig. 10(b) represents the equalizing pulse <3>eq> ' Fig. 10(c) represents the equalizing pulse <Peq, Fig. 10(d) represents the state of first sense amplifier output data lines N5and N6, Fig. 10(e) represents the state of second sense amplifier output data lines N7 and N8, and Fig. 10(f) represents the state of an output. As shown in Fig. 9, the equalizing pulse <Peq from the first equalizing pulse generator circuit 41 is supplied to the gates of the transistors Tr1 , Tr2, Tr4, Tr5, and Tr6. The equalizing pulse <Peq' from the second equalizing pulse generator 42 is supplied only to the gate of the input/output equalizing transistor Tr3. Consider now the load capacitance C(<Peq) associated with the equalizing pulse <Peq and the load capacitance C(<Peq') associated with the equalizing pulse <3>eq'- Obviously, the load capacitance C(<Peq') connected to a lesser number of gates is smaller than the load capacitance C(<Peq), i.e., C(<Peq) > C(<Peq')- It is therefore possible to construct the second equalizing pulse generator 42 generating the equalizing pulse <3>eq'with a lesser stage number of logical circuits than that of the first equalizing pulse generator circuit 41 generating the equalizing pulse <Peq- Accordingly the equalizing pulse <Peq' can be established at an earlier timing than the equalizing pulse <PeqAs shown in Fig. 10(a), when an address supplied from the address IN1, IN2, ... changes, this change is detected by the input transition detector circuits 31, 32, ... at time t1. The equalizing pulse <Peq' is outputted from the second equalizing pulse generator circuit 42 at time t2. The equalizing pulse <Peq is thereafter outputted from the first equalizing pulse generator circuit 41 at time t3. Such operation will be detailed hereinafter. As shown in Figs. 10(b) and 10(c), the equalizing pulse <Peq' is established at an earlier timing than the equalizing pulse <Peq- Accordingly, only the input/output equalizing transistor Tr3 with its gate being supplied with the equalizing pulse <Peq' turns on earlier than the other transistors Tr1 , Tr2, Tr4 to Tr6. The data lines N5and N6 at the output side of the first sense amplifier 21 are shorted and the potential on the data lines become near the equalizing potential Veqi specific to the first sense amplifier 21 as shown in Fig. 10(d). At this time t2, the second sense amplifier 22 still remains at its active state. Accordingly, as the input potential changes toward the potential Veqi, the output of the second sense amplifier 22 under the active state changes toward a potential Veq2 corresponding to the potential Veqi. The potentials Veqi and Veq2 take the median values between the high level and low level outputs of the first and second sense amplifiers 21 and 22 under the normal active state, 7 EP 0 408 031 B1 respectively. The difference between potentials Veqi and Veq2 is far smaller than the potential difference across the source and drain of the input/output shorting transistors Tr5 and Tr6. Next, as shown in Fig. 10(c), when the equalizing pulse ©eq is established at time t3, the transistors Tr1 , Tr2, Tr4, Tr5 and Tr6 turn on. Short circuits are thereby formed between the bit lines N1 and N2, between the data lines N3 and N4, between the second sense amplifier output data lines N7 and N8, and between the first sense amplifier output data line N7 and the second sense amplifier output data line N8. Until this time, the output potential of the first sense amplifier 21 has been changing toward the potential Veqi, and the output potential of the second sense amplifier 22 receiving the potential Veqi of the second sense amplifier 22 receiving the potential Veqi has been changing toward the potential Veq2. Accordingly the potential differences across the sources and drains of the input/output shorting transistors Tr5 and Tr6 are sufficiently small. As shown in Figs. 10(d) and 10(e), potential oscillation resulting from the negative feedback effects, i.e. the shorting inputs and outputs of the second sense amplifier 22 is small and can converge in a short time. Therefore, there is less possibility of generating an insignificant potential difference between the data lines. As a result, even if the width of the equalizing pulse to be outputted from the first equalizing pulse generator circuit 41 is set short and the equalizing pulse is terminated at an earlier timing (time t5), unnecessary oscillation has been converged almost completely up to this time. Therefore, as shown in Fig. 10(f), it is possible to read data without delay and prevent delays caused by reading unnecessary data due to potential oscillation or the like. As stated above, according to the embodiment of this invention, the width of the equalizing pulse <Peq to be outputted from the first equalizing pulse generator circuit 41 can be made short so that data can be read from a memory cell reliably at high speed. Fig. 12 is a block diagram showing another embodiment of this invention. In Fig. 12, like elements to those shown in Fig. 9 are represented by identical reference numerals. The differences of the structure shown in Fig. 12 from that shown in Fig. 9 are as follows. Between the second sense amplifier 22 and output buffer amplifier 25, there are provided cascaded third and fourth sense amplifiers 23 and 24. In addition, there are provided transistors Tr31 and Tr32 for shorting the input sides of the third and fourth sense amplifiers 23 and 24, and transistors Tr33, Tr34, Tr35, and Tr36 for shorting the inputs and outputs of the amplifiers 23 and 24. The equalizing pulse <3>eq' from the second equalizing pulse generator circuit 42 is used also for shorting the data signal lines at the input side of the third sense amplifier 23. So long as the condition that load capacitance C(<Peq') is 5 10 15 20 25 30 35 40 45 so 55 5 8 sufficiently smaller than the load capacitance C(<Peq) is satisfied, the equalizing pulse <Peq', may be supplied to a plurality of gates, with the same advantageous effects as the structure shown in Fig. 9 being obtained. Although the number of sense amplifier stages is five, this may be six or more. In such a case, all sense amplifiers may be divided into forward and backward stage blocks, and the equalizing pulse <Peq' from the second equalizing pulse generator 42 may be added to the forward stage block and the equalizing pulse <3>eqfrom the first equalizing pulse generator 41 to the backward stage block. Figs. 13 and 14 show another embodiment the difference of which from the embodiments shown in Figs. 9 and 12 is that there is provided a transistor Tr3Afor equalizing the output sides N5 and N6 of the first sense amplifier 21 , and the gate of this transistor is supplied with the pulse <Peq from the first equalizing pulse generator 41 . Reference signs in the claims are intended for better understanding and shall not limit the scope. Claims 1. A data read circuit for a semiconductor storage device comprising: a sense amplifier (22) to which is inputted data of a memory cell (11) selected according to an address via a pair of complementary first data lines (N1 to N6) and outputs the inputted and amplified data to a pair of complementary second data lines (N7, N8); first switching means (Tr3) for equalizing said pair of complementary first data lines (N5, N6) at the input side of said sense amplifier (22) by connecting said first data lines to each other; second switching means (Tr4) for equalizsaid pair of complementary second data lines ing (N7, N8) by connecting said second data lines to each other; third switching means (Tr5, Tr6) for equalizing by connecting the lines of said pair of first data lines (N5, N6) at the input side of said sense amplifier (22) to corresponding ones of said pair of second data lines (N7, N8); second equalizing pulse generator means for (42) generating a second equalizing pulse when said address is changed and for turn(®eq') said first switch means (Tr3) by applying ing on said second equalizing pulse to a control terminal of said first switch means; and first equalizing pulse generator means for (41) generating a first equalizing pulse (<Peq) when said address is changed and for turning on said second and third switching means (Tr4; Tr5, Tr6) by applying said first equalizing pulse to gate g EP 0 408 031 B1 terminals of said second and third switching means; wherein the load capacitance [C(<Peq')] connected to an output terminal of said second equalizing pulse generator means (42) is set smaller than the load capacitance [C(<Peq)] connected to an output terminal of said first equalizing pulse generating means (41), and wherein the number of stages of logical circuits constituting said second equalizing pulse generator means (42) is smaller than the number of stages of logical circuits constituting said first equalizing pulse generator means (41), and whereby said second equalizing pulse (<J>eq') from said second equalizing pulse generator means (42) is established earlier than said first equalizing pulse (d>eq) from said first equalizing pulse generator means (41). A data read circuit according to claim 1, further comprising a detector circuit (30) for detecting a change of said address, whereby said first and second equalizing pulse generator circuits (41, 42) generate said first and second equalizing pulses (<Peq> <J>eq') in response to a signal outputted from said detector circuit (30). A data read circuit according to claim 1, further comprising: an output buffer (25) for receiving signals from said pair of second data lines (N7, N8); and output buffer transistors including serially connected first and second transistors (Tr21, Tr22) for receiving a pair of complementary outputs from said output buffer (25), the gates of said first and second transistors being applied with one and the other output of said pair of complementary outputs, and the data in a memory cell (11) corresponding to said address being outputted from an interconnection point (N9) between said first and second transistors. A data read circuit according to claim 1, wherein said complementary pair of first data lines (N1 to N6) has another sense amplifier (21) at the intermediate thereof, said pair of data lines (N5, N6) between said other sense amplifier (21) and said sense amplifier (22) are connected together by said first switching means (Tr3), fourth switching means (Tr2) is connected between said pair of first data lines (N3, N4) at the input side of said other sense amplifier (21) for equalizing by connecting the lines of said pair of first data lines (N3, N4) to each other, and a control terminal of said fourth switching means (Tr2) and an output terminal of said first equalizing pulse generator (41) means are connected together. 5 w 15 20 25 30 35 40 45 50 55 6 10 5. A data read circuit according to claim 4, wherein fifth switching means (Tr11, Tr12) is serially connected between said other sense amplifier (21) and said memory cell (11) at the corresponding ones of said complementary first data lines (N1 to N6), sixth switching means (Tr1) is connected between the lines of said pair of first data lines at the input side of said memory cell (11) for equalizing by connecting said pair of first data lines (N1, N2) to each other, and a control terminal of said sixth switching means (Tr1) is connected to the output terminal of said first equalizing pulse generator means (41). 6. A data read circuit according to claim 1, wherein further switching means (Tr3A) is connected between said pair of first data lines (N5, N6) in parallel with said first switching means (Tr3), and said first equalizing pulse (<Peq) is applied to a control terminal of said seventh switching means (Tr3A). 7. A data read circuit for a semiconductor storage device comprising: a plurality of sense amplifiers (22, 23, 24) sequentially and serially connected by a complementary pair of first data lines (N10 to N13), a complementary pair of second data lines (N1 to N6) being connected to a first stage sense amplifier (22) of said plurality of sense amplifiers, and data of a memory cell (11) selected according to an address being outputted onto said complementary pair of second data lines; first switching means (Tr3) for equalizing said complementary pair of second data lines (N5, N6) at the input side of said first sense amplifier (22) by connecting said second data lines to each other; second switching means (Tr31, Tr32) for equalizing said complementary pair of first data lines (N10, N11; N12, N13) by connecting said first data lines to each other; third switching means (Tr5, Tr6, Tr33 to for Tr36) equalizing by connecting the lines of said complementary pair of data lines at the input side of each of said plurality of sense amplifiers (22, 23, 24) to corresponding ones of said complementary pair of data lines at the output side of each of said plurality of sense amplifiers fourth switching means (Tr4) for equalizing a complementary pair of third data lines (N7, N8) as the output terminals of the last stage sense amplifier (24) of said plurality of sense amplifiers (22 to 24) by connecting the lines of said complementary pair of third data lines to each other; second equalizing pulse generator means for (42) generating a second equalizing pulse when said address is changed and forturn(<3>eq') 11 EP 0 408 031 B1 ing on said first switch means (Tr3) and at least the first stage second switch means (Tr31 ) of said second switching means (Tr31 , Tr32) by applying said second equalizing pulse to control terminals of said first switch means (Tr3) and said at least the first stage second switch means (Tr31); and first equalizing pulse generator means for (41) generating a first equalizing pulse (<Peq) when said address is changed and for turning on said second stage second switch means (Tr32) of said second switching means (Tr31 , Tr32) not applied with said second equalizing pulse (<J>eq')> said third switching means (Tr5, Tr6, Tr33 to Tr36) by applying said first equalizing pulse (<Peq) and said fourth switching means (Tr4) to control terminals of said second stage second switch means (Tr32), said third switching means (Tr5, Tr6, Tr33 to Tr36) and said fourth switching means (Tr4); wherein the load capacitance [C(<Peq')] connected to an output terminal of said second equalizing pulse generator means (42) is set smaller than the load capacitance [C(<Peq)] connected to an output terminal of said first equalizing pulse generating means (41), and wherein the number of stages of logical circuits constituting said second equalizing pulse generator means (42) is smaller than the number of stages of logical circuits constituting said first equalizing pulse generator means (41), and whereby said second equalizing pulse (<J>eq') from said second equalizing pulse generator means (42) is established earlier than said first equalizing pulse (d>eq) from said first equalizing pulse ge nerator mea ns (4 1). 8. 9. A data read circuit according to claim 7, further comprising a detector circuit (30) for detecting a change of said address, whereby said first and second equalizing pulse generator circuits (41, 42) generate said first and second equalizing pulses (<Peq> <J>eq') in response to a signal from said detector circuit (30). A data read circuit according to claim 7, further comprising: an output buffer (25) for receiving signals from said pair of third data lines (N7, N8); and output buffer transistors including serially connected first and second transistors (Tr21, Tr22) for receiving a complementary pair of outputs from said output buffer (25), the gates of said first and second transistors being applied with one and the other output of said complementary pair of outputs, and the data in a memory cell (11) corresponding to said address being outputted from an interconnection point (N9) between said first and second transistors. 5 10 15 20 25 30 35 40 10. A data read circuit according to claim 6, wherein said complementary pair of second data lines (N1 to N6) has another sense amplifier (21) at the intermediate thereof, said pair of data lines (N5, N6) between said other sense amplifier (21) and said sense amplifier (22) are connected together by said first switching means (Tr3), fifth switching means (Tr2) is connected between said pair of second data lines (N3, N4) at the input side of said other sense amplifier (21) for equalizing by connecting the lines of said pair of second data lines (N3, N4) to each other, and a control terminal of said fifth switching means (Tr2) and an output terminal of said first equalizing pulse generator means (41) are connected together. 11. Adata read circuit according to claim 10, wherein sixth switching means (Tr11, Tr12) is serially connected between said other sense amplifier (21) and said memory cell (11) at the corresponding ones of said complementary second data lines (N1, N3; N2, N4), seventh switching means (Tr1) is connected between the lines of said pair of second data lines at the input side of said memory cell (11) for equalizing by connecting said pair of second data lines (N1, N2) to each other, and a control terminal of said seventh switching means (Tr1) is connected to the output terminal of said first equalizing pulse generator means (41). 12. Adata read circuit according to claim 7, wherein further switching means (Tr3A) is connected between said pair of second data lines (N5, N6) in parallel with said first switching means (Tr3), and said first equalizing pulse (<Peq) is applied to a control terminal of said seventh switching means (Tr3A). Patentanspruche 1. 45 50 55 7 12 Datenleseschaltung fur eine Halbleiterspeichereinrichtung, umfassend: einen Leseverstarker (22), dem Daten einer Speichzelle (11) gewahlt gemali einer Adresse uberein Paarvon komplementaren ersten Datenleitungen (N1 bis N6) eingegeben werden und der die eingegebenen und verstarkten Daten an ein Paar von komplementaren zweiten Datenleitungen (N7, N8) ausgibt; eine erste Schalteinrichtung (Tr3) zum Angleichen des Paars von komplementaren ersten Datenleitungen (N5, N6) an der Eingangsseite des Leseverstarkers (22) durch Verbinden der ersten Datenleitungen miteinander; eine zweite Schalteinrichtung (Tr4) zum Angleichen des Paars von komplementaren zweiten Datenleitungen (N7, N8) durch Verbinden der 13 EP 0 408 031 B1 zweiten Datenleitungen miteinander; eine dritte Schalteinrichtung (Tr5, Tr6) zum Angleichen durch Verbinden des Paars von ersten Datenleitungen (N5, N6) an der Eingangsseite des Leseverstarkers (22) an entsprechende des Paars von zweiten Datenleitungen (N7, N8); eine zweite Angleichungsimpuls-Erzeugungseinrichtung (42) zum Erzeugen eines zweiten Angleichungsimpulses (<> | eq')> wenn die Adresse geandert wird und zum Einschalten der ersten Schalteinrichtung (Tr3) durch Anlegen des zweiten Angleichungsimpulses an einen Steueranschluli der ersten Schalteinrichtung; und eine erste Angleichungsimpuls-Erzeugungseinrichtung (41) zum Erzeugen eines ersten Angleichungsimpulses (<|>eq), wenn die Adresse geandert wird und zum Einschalten der zweiten und dritten Schalteinrichtung (Tr4; Tr5, Tr6) durch Anlegen des ersten Angleichungsimpulses an GateAnschlusse der zweiten und dritten Schalteinrichtung; wobei die mit einem Ausgangsanschluli der zweiten Angleichungsimpuls-Erzeugungseinrichtung (42) verbundene Lastkapazitat [C(<|>eq')] kleiner eingestellt wird als die mit einem Ausgangsanschluli der ersten Angleichungsimpuls-Ezeugungseinrichtung (41) verbundene Lastkapazitat [C(4>aq)]; und wobei die Anzahl von Stufen von Logikschaltungen, die die zweite Angleichungsimpuls-Erzeugungseinrichtung (42) bilden, kleiner ist als die Anzahl von Stufen von Logikschaltungen, die die erste Angleichungsimpuls-Erzeugungsschaltung (41) bilden, und wobei derzweite Angleichungsimpuls (<|>eq') von der zweiten Angleichungsimpuls-Erzeugungseinrichtung (42) fruher eingerichtet wird, als der erste Angleichungsimpuls (<> | eq) von der ersten Angleichungsimpuls-Erzeugungseinrichtung (42). 2. 3. Datenleseschaltung nach Anspruch 1,fernerumfassend eine Detektorschaltung (30) zum Erfassen einer Anderung der Adresse, wobei die ersten und zweiten Angleichungsimpuls-Erzeugungsschaltungen (41, 42) die ersten und zweiten Angleichungsimpulse (§eq, <|>eq') im Ansprechen auf ein von der Detektorschaltung (30) ausgegebenes Signal erzeugen. Datenleseschaltumg nach Anspruch 1, ferner umfassend: einen Ausgangspuffer (25) zum Empfang von Signalen von dem Paar von zweiten Datenleitungen (N7, N8); und Ausgangspuffertransistoren mit in Reihe geschalteten ersten und zweiten Transistoren (Tr21, Tr22) zum Empfang eines Paars von komplementaren Ausgangen von dem Ausgangspuf- fer (25), wobei an die Gates der ersten und zweiten Transistoren einer und der andere Ausgang des Paars von komplementaren Ausgangen angelegt wird, und wobei die Daten in einer Speicherzelle (11) entsprechend der Adresse von einem Verbindungsknotenpunkt (N9) zwischen den ersten und zweiten Transistoren ausgegeben werden. 5 10 4. Datenleseschaltung nach Anspruch 1, wobei das komplementare Paar von ersten Datenleitungen (N1 bis N6) einen anderen Leseverstarker (21) an einer zwischen ihnen liegenden Stelle aufweist, das Paar von Datenleitungen (N5, N6) zwischen dem anderen Leseverstarker (21) und dem Leseverstarker (22) durch die erste Schalteinrichtung (Tr3) zusammengeschaltet sind, eine vierte Schalteinrichtung (Tr2) zwischen das Paar von ersten Datenleitungen (N3, N4) auf der Eingangsseite des anderen Leseverstarkers (21) zum Angleichen durch Zusammenschalten der Leitungen des Paars von ersten Datenleitungen (N3, N4) geschaltet ist, und ein Steueranschluli der vierten Schalteinrichtung (Tr2) und ein Ausgangsanschluli der ersten AngleichungsimpulsErzeugungseinrichtung (41) zusammengeschaltet sind. 5. Datenleseschaltung nach Anspruch 4, wobei einefunfte Schalteinrichtung (Tr11, Tr1 2) zwischen dem anderen Leseverstarker (21) und die Speicherzelle (11) an den entsprechenden der komplementaren ersten Datenleitungen (N1 bis N6) in Reihe geschaltet ist, eine sechste Schaltungseinrichtung (Tr1) zwischen die Leitungen des Paars von ersten Datenleitungen auf der Eingangsseite der Speicherzelle (11) zum Angleichen durch Zusammenschalten des Paars von ersten Datenleitungen (N1, N2) geschaltet ist, und ein Steueranschluli der sechsten Schalteinrichtung (Tr1 ) mit dem Ausgangsanschluli der ersten Angleichungsimpuls-Erzeugungseinrichtung (41) verbunden ist. 6. Datenleseschaltung nach Anspruch 1, wobei eine weitere Schalteinrichtung (Tr3A) zwischen das Paar von ersten Datenleitungen (N5, N6) parallel zu der ersten Schalteinrichtung (Tr3) geschaltet ist und der erste Angleichungsimpuls (<|>eq) an einen Steueranschluli der siebten Schalteinrichtung (Tr3A) angelegt ist. 7. Datenleseschaltung fur eine Halbleiterspeichereinrichtung, umfassend: eine Vielzahl von Leseverstarkern (22, 23, 24), die sequentiell und seriell durch ein komplementares Paar von ersten Datenleitungen (N10 bis N13) verbunden sind, wobei ein komplementares 15 20 25 30 35 40 45 50 55 8 14 15 EP 0 408 031 B1 Paar von zweiten Datenleitungen (N1 bis N6) mit einem Leseverstarker (22) einer ersten Stufe der Vielzahl von Leseverstarkern verbunden ist und wobei Daten einer gemali einer Adresse gewahlten Speicherzelle (11) auf das komplementare Paar von zweiten Datenleitungen ausgegeben werden; eine erste Schalteinrichtung (Tr3) zum Angleichen des komplementaren Paars von zweiten Datenleitungen (N5, N6) an der Eingangsseite des ersten Leseverstarkers (22) durch Zusammenschalten der zweiten Datenleitungen; eine zweite Schalteinrichtung (Tr31, Tr32) zum Angleichen des komplementaren Paars von ersten Datenleitungen (N10, N11; N12, N13) durch Zusammenschalten der ersten Datenleitungen; eine dritte Schalteinrichtung (Tr5, Tr6, Tr33 bis Tr36) zum Angleichen durch Verbinden der Leitungen des komplementaren Paars von Datenleitungen auf der Eingangsseite jeder der Vielzahl von Leseverstarkern (22, 23, 24) mit entsprechenden des komplementaren Paars von Datenleitungen auf der Ausgangsseite jeder der Vielzahl von Leseverstarkern; eine vierte Schalteinrichtung (Tr4) zum Angleichen eines komplementaren Paars von dritten Datenleitungen (N7, N8) als die Ausgangsanschlusse des Leseverstarkers (24) der letzten Stufe der Vielzahl von Leseverstarkern (22 bis 24) durch Zusammenschalten der Leitungen des komplementaren Paars von dritten Datenleitungen; eine zweite Angleichungsimpuls-Erzeugungseinrichtung (42) zum Erzeugen eines zweiten Angleichungsimpulses (<> | eq')> wenn die Adresse geandert wird und zum Einschalten der ersten Schaltungseinrichtung (Tr3) und wenigstens der zweiten Schaltungseinrichtung (Tr31) fur die erste Stufe der zweiten Schalteinrichtung (Tr31, Tr32) durch Anlegen des zweiten Angleichungsimpulses an Steueranschltisse der ersten Schaltungseinrichtung (Tr3) und an die besagte wenigstens zweite Schalteinrichtung (Tr31) fur die erste Stufe; und eine erste Angleichungsimpuls-Erzeugungseinrichtung (41) zum Erzeugen eines ersten Angleichungsimpulses (<|>eq), wenn die Adresse geandert wird und zum Einschalten der zweiten Schaltungseinrichtung (Tr32) fur die zweite Stufe der zweiten Schaltungseinrichtung (Tr31, Tr32), an die der zweite Angleichungsimpuls (<|)eq') nichtangelegt ist, der dritten Schalteinrichtung (Tr5, Tr6, Tr33 bis Tr36) durch Anlegen des ersten Angleichungsimpulses (<> | eq) und dervierten Schalteinrichtung (Tr4) an Steueranschltisse der Schaltungseinrichtung (Tr32) der zweiten Stufe, der dritten Schalteinrichtung (Tr5, Tr6, Tr33 bis Tr36) und dervierten Schaltungseinrichtung (Tr4), wobei die mit einem Ausgangsanschluli der zweiten Angleichungsimpuls-Erzeugungseinrichtung (42) verbundene Lastkapazitat [C(<|>eq')] kleiner eingestellt ist als die mit einem Ausgangsanschluli der ersten Angleichungsimpuls-Erzeugungseinrichtung (41) verbundene Lastkapazitat [C(<|)eq)]; und wobei die Anzahl von Stufen von Logikschaltungen, die die zweite Angleichungsimpuls-Erzeugungseinrichtung (42) bilden, kleiner ist als die Anzahl von Stufen von Logikschaltungen, die die erste Angleichungsimpuls-Erzeugungseinrichtung (41) bilden, und wobei der zweite Angleichungsimpuls (<|>eq') von der zweiten Angleichungsimpuls-Erzeugungseinrichtung (42) fruher eingerichtet wird als der erste Angleichungsimpuls (<|>eq) von der ersten AngleichungsimpulsErzeugungseinrichtung (41). 5 10 15 20 8. Datenleseschaltung nach Anspruch 7, ferner umfassend eine Detektorschaltung (30) zum Erfassen einer Anderung einer Adresse; wobei die ersten und zweiten Angleichungsimpuls-Erzeugungsschaltungen (41, 42) die ersten und zweiten Angleichungsimpulse (<|>eq, <|>eq') im Ansprechen auf ein Signal von der Detektorschaltung (30) erzeugen. 9. Datenleseschaltung nach Anspruch 7, ferner umfassend: einen Ausgangspuffer (25) zum Empfang von Signalen von dem Paar von dritten Datenleitungen (N7, N8); und Ausgangspuffertransistoren mit in Reihe geschalteten ersten und zweiten Transisotren (Tr21, Tr22) zum Empfang eines komplementaren Paars von Ausgangen von dem Ausgangspuffer (25), wobei die Gates der ersten und zweiten Transistoren einen und den anderen Ausgang des komplementaren Paars von Ausgangen erhalten, und die Daten in einer Speicherzelle (11) entsprechend der Adresse von einem Verbindungsknotenpunkt (N9) zwischen den ersten und zweiten Transistoren ausgegeben werden. 25 30 35 40 45 50 55 9 16 10. Datenleseschaltung nach Anspruch 6, dadurch gekennzeichnet, dali das komplementare Paar von zweiten Datenleitungen (N1 bis N6) einen anderen Leseverstarker (21) an einer dazwischenliegenden Stelle aufweist, das Paar von Datenleitungen (N5, N6) zwischen dem anderen Leseverstarker (21) und dem Leseverstarker (22) durch die erste Schalteinrichtung (Tr3) zusammengeschaltet werden, einefunfte Schalteinrichtung (Tr2) zwischen das Paarvon zweiten Datenleitungen (N3, N4) an der Eingangsseite des anderen Leseverstarkers (21) zum Angleichen durch Zusammenschalten der Leitungen des 17 EP 0 408 031 B1 Paars von zweiten Datenleitungen (N3, N4) geschaltet ist, und ein Steueranschluli der funften Schalteinrichtung (Tr2) und ein Ausgangsanschluli der ersten Angleichungsimpuls-Erzeugungsschaltung (41) zusammengeschaltet sind. 11. Datenleseschaltung nach Anspruch 10, wobei eine sechste Schalteinrichtung (Tr11, Tr12) zwischen den anderen Leseverstarker (21) und die Speicherzelle (11) an den entsprechenden der komplementaren zweiten Datenleitungen (N1, N3; N2, N4) in Reihe geschaltet ist, eine siebte Schalteinrichtung (Tr1) zwischen die Leitungen des Paars von zweiten Datenleitungen an der Eingangsseite der Speicherzelle (1 1) zum Angleichen durch Zusammenschalten des Paars von zweiten Datenleitungn (N1, N2) geschaltet ist, und ein Steueranschluli der siebten Schalteinrichtung (Tr1) mit dem Ausgangsanschluli der ersten Angleichungsimpuls-Erzeugungseinrichtung (41) verbunden ist. 12. Datenleseschaltung nach Anspruch 7, wobei eine weitere Schalteinrichtung (Tr3A) zwischen das Paar von zweiten Datenleitungen (N5, N6) parallel zu der ersten Schalteinrichtung (Tr3) geschaltet ist und der erste Angleichungsimpuls (<|>eq) an einen Steueranschluli der siebten Schalteinrichtung (Tr3A) angelegt ist. - un troisieme moyen de commutation (Tr5, Tr6) pour assurer une egalisation par connexion des lignes de ladite paire de premieres lignes de donnees (N5, N6), du cote d'entree dudit amplificateur de detection (22), avec des lignes correspondantes de ladite paire de secondes lignes de donnees (N7, N8) ; - un moyen generateur de seconde impulsion d'egalisation (42) pour produire une seconde impulsion d'egalisation (<J>eq<) quand ladite adresse est changee et pour rendre conducteur ledit premier moyen de commutation (Tr3) par application de ladite seconde impulsion d'egalisation a une borne de commande dudit premier moyen de commutation ; - un moyen generateur de premiere impulsion d'egalisation (41) pour produire une premiere impulsion d'egalisation (<Peq) quand ladite adresse est changee et pour rendre conducteurs lesdits second et troisieme moyens de commutation (Tr4 ; Tr5, Tr6) par application de ladite premiere impulsion d'egalisation a des bornes de commande desdits second et troisieme moyens de commutation ; Circuit dans lequel la capacite de charge [C(®eq)] reliee a une borne de sortie dudit moyen generateur de seconde impulsion d'egalisation (42) est reglee a une valeur plus petite que la capacite de charge [C(©eq)] reliee a une borne de sortie dudit moyen generateur de premiere impulsion d'egalisation (41), et - dans lequel le nombre d'etages de circuits logiques constituant ledit moyen generateur de seconde impulsion d'egalisation (42) est plus petit que le nombre d'etages de circuits logiques constituant ledit moyen generateur de premiere impulsion d'egalisation (41), et dans lequel ladite seconde impulsion d'egalisation (<J>eq<) provenant dudit moyen generateur de seconde impulsion (42) est produite plus tot que ladite premiere impulsion d'egalisation (<Peq) provenant dudit moyen generateur de premiere impulsion d'egalisation (41). 5 10 15 20 25 Revendications 1. Circuit de lecture de donnees pour un dispositif semi-conducteur de memorisation, comprenant : - un amplif icateur de detection (22) a I'entree duquel sontappliquees des donnees provenant d'une cellule de memoire (11), selectionnees en correspondance a une adresse par I'intermediaire d'une paire de premieres lignes de donnees complementaires (N1 a N6) et qui transmet a sa sortie des donnees introduites et amplif iees a une paire de secondes lignes de donnees complementaires (N7, N8) ; - un premier moyen de commutation (Tr3) pour assurer legalisation de ladite paire de premieres lignes de donnees complementaires (N5, N6), sur le cote d'entree dudit amplificateur de detection (22), par connexion desdites premieres lignes de donnees I'une avec I'autre ; - un second moyen de commutation (Tr4) pour assurer une egalisation de ladite paire de secondes lignes de donnees complementaires (N7, N8) par connexion desdites secondes lignes de donnees I'une avec I'autre ; 35 40 45 50 55 10 18 2. Un circuit de lecture de donnees selon la revendication 1, comprenant en outre un circuit detecteur (30) pour detecter un changement de ladite adresse et dans lequel lesdits circuits (41 , 42) generateurs de premiere et de seconde impulsion d'egalisation produisent lesdites premiere et seconde impulsion d'egalisation (<Peq' <J>eq<) en reponse a un signal produit a la sortie dudit circuit detecteur (30). 19 EP 0 408 031 B1 Un circuit de lecture de donnees selon la revendication 1, comprenant en outre : - un tampon de sortie (25) pour recevoir des signaux provenant de ladite paire de secondes lignes de donnees (N7, N8) et - des transistors de tampon de sortie comprenant des premier et second transistors relies en serie (Tr21, Tr22) pour recevoir une paire de signaux complementaires de sortie dudit tampon de sortie (25), des electrodes de commande desdits premier et second transistors recevant I'un et I'autre un signal de sortie de ladite paire de signaux complementaires de sortie, et les donnees se trouvant dans une cellule de memoire (11) en correspondance a ladite adresse etant transmises a la sortie a partir d'un point d'interconnexion (N9) entre lesdits premier et second transistors. Un circuit de lecture de donnees selon la revendication 1, dans lequel ladite paire complementaire de premieres lignes de donnees (N1 a N6) comporte un autre amplificateur de detection (21) dans une zone intermediate, lesdites deux lignes de donnees (N5, N6) sont reliees ensemble, entre ledit autre amplificateur de detection (21) et ledit premier amplificateur de detection (22) , par ledit premier moyen de commutation (Tr3), un quatrieme moyen de commutation (Tr2) est connecte entre les deux premieres lignes de donnees (N3, N4) sur le cote d'entree dudit autre amplificateur de detection (21) en vue d'assurer une egalisation par connexion des lignes de ladite paire de premieres lignes de donnees (N3, N4) I'une avec I'autre, et une borne de commande dudit quatrieme moyen de commutation (Tr2) et une borne de sortie dudit moyen generateur de premiere impulsion d'egalisation (41) sont reliees ensemble. Un circuit de lecture de donnees selon la revendication 4, dans lequel un cinquieme moyen de commutation (Tr11, Tr12) est connecte en serie entre ledit autre amplificateur de detection (21) et ladite cellule de memoire (11) en correspondance avec certaines desdites premieres lignes de donnees complementaires (N1 a N6), un sixieme moyen de commutation Tr1) est connecte entre les lignes faisant partie desdites premieres lignes de donnees sur le cote d'entree de ladite cellule de memoire (11) afin d'assurer une egalisation par connexion de ladite paire de premieres lignes de donnees (N1, N2) I'une avec I'autre, et une borne de commande dudit sixieme moyen de commutation (Tr1) est connectee a la borne de sortie dudit moyen generateur de premiere impulsion d'egalisation (41). 6. Un circuit de lecture de donnees selon la revendication 1, dans lequel un autre moyen de commutation (Tr3A), situe entre les deux lignes de ladite paire de premieres lignes de donnees (N5, N6), est connecte en parallele avec ledit premier moyen de commutation (Tr3), et ladite premiere impulsion d'egalisation (<Peq) est appliquee a une borne de commande dudit septieme moyen de commutation (Tr3A). 7. Un circuit de lecture de donnees pour un dispositif semi-conducteur de memorisation, comprenant : - un ensemble d'amplif icateurs de detection (22, 23, 24) connectes sequentiellement et en serie au moyen d'une paire complementaire de premieres lignes de donnees (N10 a N13), une paire complementaire de secondes lignes de donnees (N1 a N6) etant connectees a un amplificateur de detection de premier etage (22) faisant partie dudit ensemble d'amplificateur de detection, et une donnee d'une cellule de memoire (11) selectionnee en correspondance a une adresse etant transmise a ladite paire complementaire de secondes lignes de donnees ; - un premier moyen de commutation (Tr3) pour legalisation de ladite paire complementaire de secondes lignes de donnees (N5, N6) sur le cote d'entree dudit premier amplificateur de detection (22) par connexion desdites secondes lignes de donnees I'une avec I'autre ; - un second moyen de commutation (Tr31, Tr32) pour assurer une egalisation de ladite paire complementaire de premieres lignes de donnees (N10, N11 ; N12, N13) par connexion desdites premieres lignes de donnees I'une avec I'autre ; - un troisieme moyen de commutation (Tr5, Tr6, Tr33 a Tr36) pour assurer une egalisation par connexion des lignes de ladite paire complementaire de lignes de donnees sur le cote d'entree de chacun des amplificateurs de detection dudit ensemble (22, 23, 24) avec les lignes correspondantes de ladite paire complementaire de lignes de donnees du cote de sortie de chacun des amplif icateurs de detection dudit ensemble ; - un quatrieme moyen de commutation (Tr4) pour assurer une egalisation d'une paire complementaire de troisiemes lignes de donnees (N7, N8) aux bornes de sortie de I'amplif icateur de detection de dernier etage (24) dudit ensemble d'amplificateur de detection (22 a 24) par connexion des lignes de ladite paire complementaire de 5 10 15 20 25 30 35 40 45 so 55 11 20 21 - - - - EP 0 408 031 B1 troisiemes lignes de donnees I'une avec I'autre ; un moyen generateur de seconde impulsion d'egalisation (42) pour produire une seconde impulsion d'egalisation (<J>eq<) lorsque ladite adresse est changee et pour rendre conducteur ledit premier moyen de commutation (Tr3) et au moins le second commutateurde premier etage (Tr31) dudit second moyen de commutation (Tr31 , Tr32) par application de ladite seconde impulsion d'egalisation aux bornes de commande dudit premier moyen de commutation (Tr3) et aux bornes de commande d'au moins ledit second commutateur de premier etage (Tr31); un moyen generateur de premiere impulsion d'egalisation pour produire une premiere impulsion d'egalisation (<Peq) quand ladite adresse est changee et pour rendre conducteur le second commutateur de second etage (Tr32) dudit second moyen de commutation (Tr31, Tr32) qui n'a pas recu ladite seconde impulsion d'egalisation (<3>eq')> pour rendre conducteur ledit troisieme moyen de commutation (Tr5, Tr6, Tr33 a Tr36) par application de ladite premiere impulsion d'egalisation (<J>eq), et pour rendre conducteur ledit quatrieme moyen de commutation (Tr4) par application de cette premiere impulsion d'egalisation (<Peq) aux bornes de commandes dudit second commutateurde second etage (Tr32), dudit troisieme moyen de commutation (Tr5, Tr6, Tr33 a Tr36) dudit quatrieme moyen de commutation (Tr4) ; circuit dans lequel la capacite de charge [C(®eq)]. reliee a une borne de sortie dudit moyen generateur de seconde impulsion d'egalisation (42) est reglee a une valeur plus petite que la capacite de charge [C(©eq)] reliee a une borne de sortie dudit moyen generateur de premiere impulsion d'egalisation (41), et dans lequel le nombre d'etages de circuits logiques constituant ledit moyen generateur de seconde impulsion d'egalisation (42) est plus petit que le nombre d'etages de circuits logiques constituant ledit moyen generateur de premiere impulsion d'egalisation (41), et oil ladite seconde impulsion d'egalisation (<J>eq<) provenant dudit moyen generateur de seconde impulsion d'egalisation (42) est produite plus tot que ladite premiere impulsion d'egalisation (<Peq) provenant dudit moyen generateurde premiere impulsion d'egalisation (41). 8. Circuit de lecture de donnees selon la revendication 7, comprenant en outre un circuit detecteur (30) pour detecter un changement de ladite adresse et dans lequel lesdits circuits (41 , 42) de generation de premiere etde seconde impulsions d'egalisation produisent lesdites premiere et seconde impulsions (<beq, <Peq') en reponse a un signal fourni par ledit circuit detecteur (30). 9. Circuit de lecture de donnees selon la revendication 7, comprenant en outre : - un tampon de sortie (25) pour recevoir des signaux provenant de ladite paire de troisiemes lignes de donnees (N7, N8); et des transistors de tampon de sortie comprenant des premier et second transistors relies en serie (Tr21, Tr22) pour recevoir une paire complementaire de signaux de sortie provenant dudit tampon de sortie (25) , les electrodes de commande desdits premier et second transistors recevant I'un et I'autre signal de sortie de ladite paire complementaire et les donnees se trouvant dans une cellule de memoire (11) en correspondance a ladite adresse etant transmises a la sortie a partir d'un point d'interconnexion (N9) entre lesdits premier et second transistors. 5 10 15 20 25 30 35 40 45 50 55 12 22 10. Circuit de lecture de donnees selon la revendication 6, dans lequel ladite paire complementaire de secondes lignes de donnees (N1 a N6) comporte un autre amplif icateurde detection (21) dans une zone intermediate, les deux lignes de donnees (N5, N6) de ladite paire situees entre ledit autre amplificateur de detection (21) et ledit premier amplificateur de detection (22) sont reliees ensemble par ledit premier moyen de commutation (Tr3), un cinquieme moyen de commutation (Tr2) est connecte entre les secondes lignes de donnees (N3, N4) de ladite paire sur le cote d'entree dudit autre amplificateur de detection (21) pour assurer une egalisation par connexion des lignes de ladite paire de secondes lignes de donnees (N3, N4) I'une avec I'autre, et une borne de commande dudit cinquieme moyen de commutation (Tr2) ainsi qu'une borne de sortie dudit moyen generateurde premiere impulsion d'egalisation (41) sont reliees ensemble. 11. Circuit de lecture de donnees selon la revendication 10, dans lequel un sixieme moyen de commutation (Tr11, Tr12) est connecte en serie entre ledit autre amplificateur de detection (21) et ladite cellule de memoire (11) en correspondance a des lignes complementaires faisant partie des secondes lignes de donnees ( N1, N3 ; N2, N4), un septieme moyen de commutation 23 EP 0 408 031 B1 (Tr1) est connecte entre les lignes de ladite paire de secondes lignes de donnees sur le cote d'entree de ladite cellule de memoire (11) pour assurer une egalisation par connexion de ladite paire de secondes lignes de donnees (N1, N2) I'une avec I'autre, et une borne de commande dudit septieme moyen de commutation (Tr1) est reliee a la borne de sortie dudit moyen generateur de premiere impulsion d'egalisation (41). 12. Circuit de lecture de donnees selon la revendication 7, dans lequel un autre moyen de commutation (Tr3A) est connecte, entre les deux secondes lignes de donnees precitees (N5, N6), en parallel avec ledit premier moyen de commutation (Tr3), et ladite premiere impulsion d'egalisation (<3>eq) est appliquee a une borne de commande dudit septieme moyen de commutation (Tr3A). 5 10 15 20 25 30 35 40 45 50 13 24 EP 0 408 031 B1 25 N1 11^ """ Irll N3 N5 LU >_ o_i 2 - J Trl LULU So ■"T ' M Tr3 !LTr2 1N7 CO z luck colu qu_ ■22 l i ■ 01 LU li. u. Tr4 5^ CDLU HC l-U. Trl2 N6 o< N8 A2o IN 2 INPUT TRANSITION DETECTOR CIRCUIT EQUALIZING PULSE GENERATOR CIRCUIT I 40 INPUT TRANSITION DETECTOR CIRCUIT 30 DETECTOR CIRCUIT i F I G . I P R I O R A R T 21 ( 2 2 ~ 2 4 ) 1 ^_5(=N3xki) N7 J6(=N4xk2) N8 i 25 i J I G. 2 F I G . 4 1 N7a N7b i F N9 ~0UT N8a Tr22 777" Tr6 A1 IN1C IC T r 2 l l i u_< N4 |N7a 1 3 31(32) / 0UT1 ;0UT2) F I G. 4 Al aT a i b DUT 1 i i i _ - I G. 5 I b. 6 15 ka ) un I , i in c. lb) <^eq Ic) N5.N6 11 I c. 1 I T i ■v y A_ Io I T / \_ Veq. Veq, [d) N 7 . N 8 [OUT) - I G. 7 1 T2 T3 I -I aj ini,in2 b) <£eq c) N5.N6 d) N7,N8 e) I < OUT I G. 8 EP 0 408 031 B1 Tr5=^" N1 Tr 11 T— i— i N3 T— tr TrOf I d LULU SO r2 N5 LU CO 5j IU COL LU CO 2 Luce Tr3 r-_l COQ. Trl2 N4 IN1 32IN2 INPUT TRANSITION DETECTOR CIRCUIT FIRST EQUALIZING PULSE GENERATOR CIRCUIT INPUT TRANSITION DETECTOR CIRCUIT SECOND EQUALIZING PULSE GENERATOR CIRCUIT 30 . DETECTOR F I G . tl INUN2- (b) 4>eq (c) <£eq (d) N5 , N 6 N7 , N 8 (f) N9 (OUT) rr LU u. Lu 9 t3 t2 j t4 15 I If II X Veq2 F I G . 1 0 17 HLTr2l N9< o< OUT -CTr22 777" eq eq •42 CIRCUIT -Veq ] (e) N8 Tr6 t (a) T r 4 ^ J LUS CO< N6 N11 3 H N7 ■22 Lu< N2 25 utltUIOK CIRCUIT w Ni o-- 1Kb I EQUALIZING 'ULSE GENERATOR :IRCUIT j ni-u I | l-tAlNSI I IUIN )ETECTOR CIRCUIT !>e<q tbUlNU hUUALIZING ULSE GENERATOR IRCUIT \ 42 irui I KAIN51 I ION )ETECTOR CIRCUIT ro ^ T i_j V H CL r34 -♦- 25] 121 cr LU u. E-J I JLU •O ^ T r35 fiNIO, \ cc LU Lu r3 < _ HI r3l I P . T, " I r°T I Tr35T 12 q LU I -321 U. _l CL < ^ 1 »— — |Tr36=r N7a Tr2l cc LU U. ' i r _l r4 CL < _ | cc 5 ' 9f- OUT k Q<2 <y-yHLTr Tr22 '8 NSa^ lr5: i r 11 IN 5 — « i r IN I >cc i d Trl J h LULU SO 1 CO STr2 INb lLTr2l N9- IINI-U I I RAINSI I IUIN DETECTOR CIRCUIT r i r o i tUUALIZING PULSE GENERATOR CIRCUIT iNru 1 1rtAiNSi 1IUIN DETECTOR CIRCUIT sciuuinu tvjUALlZING 3ULSE GENERATOR CIRCUIT OUT V r 2 2 \8 777- Ir6 I t I -41 Peg' *2 ■ 3 6U . DETECTOR CIRCUIT F I G . 13 3I-CF= INPUI TRANSITION IIN 1 0 DETECTOR CJRCUIT 32 n N2 o INPUI TRANSITION DETECTOR CIRCUIT FIRST EQUALIZING - PULSE GENERATOR CIRCUIT >q bhCOND EQUALIZING - PULSE GENERATOR ■ CIRCUIT •q DETECTOR :ircuit NI JLU H Ll. 22 IN I I IN 1 a. LU Ll ll. Tr4- COq. E2 INf Trl2 N7 LU CO z LUCE COLU Oil lr3A / Tr3 11 1H coy 25 r33 15 I Ml IN3 i 1— t rlJh Trl2 f t f22) _1 J r JCC }LU 2cc m -_) )CL :2 :< N IN1' Ih ii j ■) :<r JLU 3-1 :cl :2 :< r3l )< _ If L r6 ~j~ - Ir35n IG. 14 1 \2 "1-34 L7J 1 S _ i\2 Li V32J JCC ■>uj 5 l i . r36i 17a ^LTr2 c J L _ Qlu -il J9fOUT >□ -a. 55Tr22 _ J / 1 <Q N 8 a