INTEGRATED CIRCUITS 74F655A* Octal buffer/driver with parity, inverting (3-State) 74F656A Octal buffer/driver with parity, non-inverting (3-State) * Discontinued part. Please see the Discontinued Product List. Product specification IC15 Data Handbook 1991 Jul 17 Philips Semiconductors Product specification 74F655A* 74F656A Buffers/drivers 74F655A Octal buffer/driver with parity, inverting (3-State) 74F656A Octal buffer/driver with parity, non-inverting (3-State) FEATURES DESCRIPTION • Significantly improved AC performance over 74F655 and 74F656 • High impedance NPN base input for reduced loading The 74F655A and 74F656A are octal buffers and line drivers with parity generation/checking designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers. These parts include parity generator/checker to improve PC board density. (40µA in High and Low states) • Ideal in applications where high output drive and light bus loading are required (IIL is 40µA vs. FAST std of 600µA) • 74F655A combines 74F240 and 74F280A functions in one package • 74F656A combines 74F244 and 74F280A functions in one package • 74F655A Inverting • 74F656A Non-inverting • 3-State outputs sink 64mA and source 15mA • 24-pin plastic Slim DIP (300mil) package • Inputs on one side and outputs on the other side simplifies PC TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74F655A 6.5ns 64mA 74F656A 6.5ns 64mA board layout • Combined functions reduce part count and enhance system performance • Industrial temperature range available (–40°C to +85°C) ORDERING INFORMATION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C INDUSTRIAL RANGE VCC = 5V ±10%, Tamb = –40°C to +85°C PKG DWG # 24-pin Plastic Slim DIP (300mil) N74F656AN I74F656AN SOT222-1 24-pin Plastic SOL N74F656AD I74F656AD SOT137-1 DESCRIPTION INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS DESCRIPTION 74F(U.L.) HIGH/LOW LOAD VALUE HIGH/LOW D0–D7 Data inputs 2.0/0.066 40µA/40µA PI Parity input 1.0/0.033 20µA/20µA OE0, OE1, OE2 Output Enable Inputs (active Low) 1.0/0.033 20µA/20µA ΣE, ΣO Parity outputs 750/106.7 15mA/64mA Q0–Q7 Data outputs (74F655A) 750/106.7 15mA/64mA Q0–Q7 Data outputs (74F656A) 750/106.7 15mA/64mA NOTE: One (1.0) FAST Unit Load (U.L.) is defined as: 20µA in the High state and 0.6mA in the Low state. * Discontinued part. Please see the Discontinued Products List. 1991 Jul 17 2 853-0383 03305 Philips Semiconductors Product specification 74F655A* 74F656A Buffers/drivers PIN CONFIGURATION – 74F655A PIN CONFIGURATION – 74F656A OE0 1 24 VCC OE0 1 24 VCC OE1 2 23 OE2 OE1 2 23 OE2 3 22 ΣO PI 3 22 ΣO D0 4 21 ΣE D0 4 21 ΣE D1 5 20 Q0 D1 5 20 Q0 D2 PI 6 19 Q1 D2 6 19 Q1 D3 7 18 Q2 D3 7 18 Q2 D4 8 17 Q3 D4 8 17 Q3 D5 9 16 Q4 D5 9 16 Q4 D6 10 15 Q5 D6 10 15 Q5 D7 11 14 Q6 D7 11 14 Q6 13 Q7 GND 12 13 Q7 GND 12 SF01169 SF01168 LOGIC SYMBOL – 74F655A 4 5 6 7 8 9 10 11 D0 D1 D2 D3 D4 D5 D6 D7 3 PI 1 OE0 2 OE1 23 OE2 VCC=Pin 24 GND=Pin 12 LOGIC SYMBOL – 74F656A ΣE ΣO Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 20 19 18 17 16 15 14 13 21 22 IEEE/IEC SYMBOL – 74F655A 5 6 7 8 9 10 11 D0 D1 D2 D3 D4 D5 D6 D7 3 PI 1 OE0 2 OE1 23 OE2 VCC=Pin 24 GND=Pin 12 SF01170 4 3 P3 1 2 23 ≥1 4 5 6 7 8 9 3,5,6,7,8 9,10,11,12 Z6 Z7 Z8 Z9 Z10 ΣO 22 Q1 Q2 Q3 Q4 Q5 Q6 Q7 20 19 18 17 16 15 14 13 SF01171 LOGIC SYMBOL (IEEE/IEC) – 74F656A 2K [EVEN] 21 22 [ODD] 3 P3 1 ≥1 2 23 EN4 Z5 21 Q0 2K 3,5,6,7,8 9,10,11,12 ΣE 4 20 4 19 5 18 6 17 7 16 8 15 9 3,5,6,7,8 9,10,11,12 [EVEN] 3,5,6,7,8 9,10,11,12 [ODD] 21 22 EN4 20 Z5 Z6 Z7 Z8 Z9 Z10 4 19 18 17 16 15 10 Z11 14 10 Z11 14 11 Z12 13 11 Z12 13 SF01172 SF01173 * Discontinued part. Please see the Discontinued Products List. 1991 Jul 17 3 Philips Semiconductors Product specification 74F655A* 74F656A Buffers/drivers LOGIC DIAGRAM – 74F655A PI 3 21 ΣE 22 ΣO D0 4 20 Q0 D1 5 19 Q1 D2 6 18 Q2 D3 7 17 Q3 D4 8 16 Q4 D5 9 15 Q5 D6 10 14 Q6 D7 11 13 Q7 OE0 1 OE1 2 OE2 23 VCC = Pin 24 GND = Pin 12 SF01174 * Discontinued part. Please see the Discontinued Products List. 1991 Jul 17 4 Philips Semiconductors Product specification 74F655A* 74F656A Buffers/drivers LOGIC DIAGRAM – 74F656A PI 3 21 ΣE 22 ΣO D0 4 20 Q0 D1 5 19 Q1 D2 6 18 Q2 D3 7 17 Q3 D4 8 16 Q4 D5 9 15 Q5 D6 10 14 Q6 D7 11 13 Q7 OE0 1 OE1 23 OE2 2 VCC = Pin 24 GND = Pin 12 SF01175 * Discontinued part. Please see the Discontinued Products List. 1991 Jul 17 5 Philips Semiconductors Product specification 74F655A* 74F656A Buffers/drivers FUNCTION TABLE FUNCTION TABLE for PARITY OUTPUTS INPUTS OE0 H L X Z OE1 OUTPUTS OE2 Dn PARITY OUTPUTS INPUTS 74F655A 74F656A Qn Qn Number of inputs, High (PI, D0–D7) ΣE Σ0 H L L L L L H L Even - 0, 2, 4, 6, 8 L L L H L H Odd - 1, 3, 5, 7, 9 L H H X X X Z Z Any OEn = High Z Z X H X X Z Z X X H X Z Z = = = = H = High voltage level L = Low voltage level Z = High impedance “off” state High voltage level Low voltage level Don’t care High impedance “off” state ABSOLUTE MAXIMUM RATINGS (Operation beyond the limits set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free-air temperature range.) SYMBOL PARAMETER RATING UNIT V VCC Supply voltage –0.5 to +7.0 VIN Input voltage –0.5 to +7.0 V IIN Input current –30 to +5 mA VOUT Voltage applied to output in High output state –0.5 to +VCC V IOUT Current applied to output in Low output state 128 mA 0 to +70 Tamb Operating free-air free air temperature range °C –40 to +85 °C Tstg Storage temperature range –65 to +150 °C Commercial range Industrial range RECOMMENDED OPERATING CONDITIONS LIMITS SYMBOL PARAMETER UNIT MIN NOM MAX 5.0 5.5 VCC Supply voltage 4.5 VIH High-level input voltage 2.0 VIL Low-level input voltage 0.8 V IIK Input clamp current –18 mA IOH High-level output current –15 mA IOL Low-level output current 64 mA 0 70 Tamb Operating free-air free air temperature range °C –40 85 °C Commercial range Industrial range * Discontinued part. Please see the Discontinued Products List. 1991 Jul 17 6 V V Philips Semiconductors Product specification 74F655A* 74F656A Buffers/drivers DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) LIMITS SYMBOL VOH TEST CONDITIONSNO TAG PARAMETER VCC = MIN MIN, VIL = MAX VIH = MIN High-level output voltage IOH = –15mA VCC = MIN, VIL = MAX VIH = MIN VOL O Low level output voltage Low-level VIK Input clamp voltage II Input current at maximum input voltage MIN ±10%VCC 2.4 ±5%VCC 2.7 ±10%VCC 2.0 NO TAG High level High-level input current Industrial range IIL Low level input current Low-level IOZH Off-state current High-level voltage applied IOZL Off-state current Low-level voltage applied IOS Short-circuit output current3 ICC Supply current (total) MAX 3.3 V V ±10%VCC IOL O = 64mA UNIT V ±5%VCC VCC = MIN, II = IIK Commercial range IIH IOH 3mA O = –3mA TYP 0.55 V 0.42 0.55 V –0.73 –1.2 V 100 µA Dn 40 µA Pl, OEn 20 µA 80 µA Pl, OEn 40 µA Dn –40 µA –20 µA 50 µA –50 µA –225 mA 50 80 mA 78 110 mA VCC = 0.0, VI = 7.0V VCC = MAX, MAX VI = 2 2.7V 7V Dn VCC = MAX, MAX VI = 0 0.5V 5V Pl, OEn VCC = MAX, VO = 2.7V VCC = MAX, VO = 0.5V VCC = MAX –100 ICCH ICCL VCC = MAX ICCZ 83 90 mA NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25°C. 3. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any sequence of parameter tests, IOS tests should be performed last. AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER Tamb = +25°C, VCC = +5.0V +5 0V CL = 50pF, RL = 500Ω TEST CONDITIONS Tamb = 0°C to +70°C VCC = +5.0V +5 0V ± 10% CL = 50pF, RL = 500Ω Tamb = –40°C to +85°C VCC = +5.0V +5 0V ± 10% CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX MIN MAX UNIT tPLH tPHL Propagation delay Dn to Qn 74F655A Waveform 2 2.0 1.0 4.5 2.5 6.5 4.0 2.0 1.0 7.5 4.5 2.0 1.0 8.5 5.5 ns ns tPLH tPHL Propagation delay Dn to Qn 74F656A Waveform 1 2.0 2.5 4.0 5.5 6.5 7.0 2.0 2.5 7.0 7.5 2.0 2.5 8.0 9.0 ns ns tPLH tPHL Propagation delay Dn to ΣE, ΣO Waveform 1, 2 5.5 5.5 10.0 11.0 13.0 14.5 5.5 5.5 14.0 16.5 4.5 5.5 16.5 18.0 ns ns tPZH tPZL Output enable time to High or Low level Waveform 3 Waveform 4 3.5 4.0 7.0 8.0 10.5 11.0 3.5 4.5 11.5 12.0 3.0 4.0 13.0 13.5 ns ns tPHZ tPLZ Output disable time from High or Low level Waveform 3 Waveform 4 1.5 2.0 4.5 5.0 8.0 8.0 1.5 2.0 9.0 9.0 1.5 1.5 10.0 10.0 ns ns * Discontinued part. Please see the Discontinued Products List. 1991 Jul 17 7 Philips Semiconductors Product specification 74F655A* 74F656A Buffers/drivers AC WAVEFORMS VM Dn VM tPLH VM Dn tPHL tPHL E, O, Qn VM VM tPLH E, O, Qn VM VM VM SF00965 SF00966 Waveform 1. Propagation Delay, Non-Inverting Outputs VM OEn Waveform 2. Propagation Delay, Inverting Outputs tPZH VM tPZL VOH -0.3V tPHZ E, O, Qn, Qn VM OEn VM tPLZ VM E, O, Qn, Qn VM 0V VOL +0.3V SF00968 SF00967 Waveform 3. 3-State Output Enable Time to High Level and Output Disable Time from High Level Waveform 4. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level TEST CIRCUIT AND WAVEFORM VCC 7.0V VIN RL VOUT PULSE GENERATOR tw 90% NEGATIVE PULSE VM CL AMP (V) VM 10% D.U.T. RT 90% 10% tTHL (tf ) tTLH (tr ) tTLH (tr ) tTHL (tf ) 0V RL AMP (V) 90% 90% Test Circuit for 3-State Outputs POSITIVE PULSE VM VM 10% TEST tPLZ tPZL All other SWITCH closed closed open DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators. 10% tw SWITCH POSITION 0V Input Pulse Definition INPUT PULSE REQUIREMENTS family amplitude VM 74F 3.0V 1.5V rep. rate tw tTLH tTHL 1MHz 500ns 2.5ns 2.5ns SF00777 * Discontinued part. Please see the Discontinued Products List. 1991 Jul 17 8 Philips Semiconductors Product specification Buffers/drivers 74F655A*, 74F656A DIP24: plastic dual in-line package; 24 leads (300 mil) * Discontinued part. Please see the Discontinued Product List. 1991 Jul 17 9 SOT222-1 Philips Semiconductors Product specification Buffers/drivers 74F655A*, 74F656A SO24: plastic small outline package; 24 leads; body width 7.5 mm * Discontinued part. Please see the Discontinued Product List. 1991 Jul 17 10 SOT137-1 Philips Semiconductors Product specification Buffers/drivers 74F655A*, 74F656A NOTES * Discontinued part. Please see the Discontinued Product List. 1991 Jul 17 11 Philips Semiconductors Product specification Buffers/drivers 74F655A*, 74F656A Data sheet status Data sheet status Product status Definition [1] Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. Preliminary specification Qualification This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product. Product specification Production This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. [1] Please consult the most recently issued datasheet before initiating or completing a design. Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Disclaimers Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 print code Document order number: * Discontinued part. Please see the Discontinued Product List. yyyy mmm dd 12 Date of release: 10-98 9397-750-05169