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INTEGRATED CIRCUITS
74F656A Octal buffer/driver with parity, non-inverting (3-State)
Product specification Supersedes data of 1991 Jul 17 IC15 Data Handbook 2000 Jun 30
Philips Semiconductors
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
FEATURES
* Significantly improved AC performance over 74F656 * High impedance NPN base input for reduced loading
(40A in High and Low states)
DESCRIPTION
The 74F656A is an octal buffer and line driver 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. TYPICAL PROPAGATION DELAY 6.5ns
* Ideal in applications where high output drive and light bus loading * 74F656A combines 74F244 and 74F280A functions in one
package are required (IIL is 40A vs. FAST std of 600A) TYPE 74F656A TYPICAL SUPPLY CURRENT (TOTAL) 64mA
* 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
board layout
* Combined functions reduce part count and enhance system
performance
* Industrial temperature range available (-40C to +85C)
ORDERING INFORMATION
DESCRIPTION 24-pin Plastic Slim DIP (300mil) 24-pin Plastic SOL COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C N74F656AN N74F656AD INDUSTRIAL RANGE VCC = 5V 10%, Tamb = -40C to +85C I74F656AN I74F656AD PKG DWG # SOT222-1 SOT137-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS D0-D7 PI OE0, OE1, OE2 E, O Q0-Q7 Data inputs Parity input Output Enable Inputs (active Low) Parity outputs Data outputs DESCRIPTION 74F(U.L.) HIGH/LOW 2.0/0.066 1.0/0.033 1.0/0.033 750/106.7 750/106.7 LOAD VALUE HIGH/LOW 40A/40A 20A/20A 20A/20A 15mA/64mA 15mA/64mA
NOTE: One (1.0) FAST Unit Load (U.L.) is defined as: 20A in the High state and 0.6mA in the Low state.
2000 Jun 30
2
853-0383 24025
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
PIN CONFIGURATION
OE0 OE1 PI D0 D1 D2 D3 D4 D5 D6 D7 GND 1 2 3 4 5 6 7 8 9 10 11 12 24 VCC 23 OE2 22 O 21 E 20 Q0 19 Q1 18 Q2 17 Q3 16 Q4 15 Q5 14 Q6 13 Q7
SF01169
LOGIC SYMBOL
4 5 6 7 8 9 10 11
D0 3 1 2 23 PI OE0 OE1 OE2 Q0
D1
D2
D3
D4
D5
D6
D7
E O
21 22
Q1
Q2
Q3
Q4
Q5
Q6
Q7
VCC=Pin 24 GND=Pin 12
20
19
18
17
16
15
14
13
SF01171
LOGIC SYMBOL (IEEE/IEC)
2K 3,5,6,7,8 9,10,11,12 3 1 2 23 4 Z5 5 6 7 8 9 10 11 Z6 Z7 Z8 Z9 Z10 Z11 Z12 4 19 18 17 16 15 14 13 P3 1 EN4 3,5,6,7,8 9,10,11,12 [EVEN] [ODD] 21 22
20
SF01173
2000 Jun 30
3
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
LOGIC DIAGRAM
3
PI
21
E
22
O
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 OE1 OE2
1 23 2
VCC = Pin 24 GND = Pin 12
SF01175
2000 Jun 30
4
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
FUNCTION TABLE
INPUTS OE0 L L H X X H L X Z = = = = OE1 L L X H X OE2 L L X X H Dn L H X X X OUTPUTS Qn L H Z Z Z
FUNCTION TABLE for PARITY OUTPUTS
INPUTS Number of inputs, High (PI, D0-D7) Even - 0, 2, 4, 6, 8 Odd - 1, 3, 5, 7, 9 Any OEn = High H = High voltage level L = Low voltage level Z = High impedance "off" state E H L Z PARITY OUTPUTS 0 L H Z
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 VCC VIN IIN VOUT IOUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in High output state Current applied to output in Low output state Commercial range Operating free-air temperature range free air Industrial range Storage temperature range -40 to +85 -65 to +150 PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5 -0.5 to +VCC 128 0 to +70 UNIT V V mA V mA C C C
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL VCC VIH VIL IIK IOH IOL Tamb Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Commercial range Operating free-air temperature range free air Industrial range 0 -40 PARAMETER MIN 4.5 2.0 0.8 -18 -15 64 70 85 NOM 5.0 MAX 5.5 V V V mA mA mA C C UNIT
2000 Jun 30
5
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST CONDITIONS1 VCC = MIN MIN, VIL = MAX VIH = MIN VCC = MIN, VIL = MAX VIH = MIN 10%VCC 5%VCC 10%VCC 10%VCC 5%VCC 0.42 -0.73 LIMITS MIN 2.4 2.7 2.0 0.55 0.55 -1.2 100 40 20 VCC = MAX, VI = 2 7V MAX 2.7V 80 40 VCC = MAX, VI = 0 5V MAX 0.5V VCC = MAX, VO = 2.7V VCC = MAX, VO = 0.5V VCC = MAX -100 50 VCC = MAX 78 -40 -20 50 -50 -225 80 110 3.3 TYP2 MAX V V V V V V A A A A A A A A A mA mA mA UNIT
VOH
High-level output voltage
IO = -3mA 3mA OH IOH = -15mA IO = 64mA OL VCC = MIN, II = IIK
VO OL VIK II
Low-level Low level output voltage Input clamp voltage Input current at maximum input voltage Commercial range Dn Pl, OEn Dn Pl, OEn Dn Pl, OEn Off-state current High-level voltage applied Off-state current Low-level voltage applied Short-circuit output current3 ICCH Supply current (total)
VCC = 0.0, VI = 7.0V
IIH
High-level High level input current Industrial range
IIL IOZH IOZL IOS
Low-level Low level input current
ICC
ICCL
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 = 25C. 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 TEST CONDITIONS Tamb = +25C, VCC = +5 0V +5.0V CL = 50pF, RL = 500 MIN tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation delay Dn to Qn Propagation delay Dn to E, O Output enable time to High or Low level Output disable time from High or Low level Waveform 1 Waveform 1, 2 Waveform 3 Waveform 4 Waveform 3 Waveform 4 2.0 2.5 5.5 5.5 3.5 4.0 1.5 2.0 TYP 4.0 5.5 10.0 11.0 7.0 8.0 4.5 5.0 MAX 6.5 7.0 13.0 14.5 10.5 11.0 8.0 8.0 Tamb = 0C to +70C VCC = +5.0V 10% +5 0V CL = 50pF, RL = 500 MIN 2.0 2.5 5.5 5.5 3.5 4.5 1.5 2.0 MAX 7.0 7.5 14.0 16.5 11.5 12.0 9.0 9.0 Tamb = -40C to +85C VCC = +5.0V 10% +5 0V CL = 50pF, RL = 500 MIN 2.0 2.5 4.5 5.5 3.0 4.0 1.5 1.5 MAX 8.0 9.0 16.5 18.0 13.0 13.5 10.0 10.0 ns ns ns ns ns ns ns ns UNIT
2000 Jun 30
6
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
AC WAVEFORMS
Dn
VM tPLH
VM tPHL VM VM
Dn
VM tPHL
VM tPLH VM VM
SE, SO, Qn
SE, SO, Qn
SF00965
SF00966
Waveform 1. Propagation Delay, Non-Inverting Outputs
Waveform 2. Propagation Delay, Inverting Outputs
OEn
VM tPZH
VM tPHZ VM 0V VOH -0.3V
OEn
VM tPZL
VM tPLZ VM VOL +0.3V
SE, SO, Qn, Qn
SE, SO, Qn, Qn
SF00967
SF00968
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 PULSE GENERATOR RT D.U.T. VOUT RL NEGATIVE PULSE 90% VM 10% tTHL (tf ) CL RL tTLH (tr ) 90% POSITIVE PULSE 10% tTHL (tf ) AMP (V) 90% VM tw 10% 0V tw VM 10% tTLH (tr ) 0V AMP (V)
90%
Test Circuit for 3-State Outputs SWITCH POSITION TEST tPLZ tPZL All other SWITCH closed closed open
VM
Input Pulse Definition
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.
INPUT PULSE REQUIREMENTS family amplitude VM 74F 3.0V 1.5V rep. rate 1MHz tw 500ns tTLH 2.5ns tTHL 2.5ns
SF00777
2000 Jun 30
7
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
DIP24: plastic dual in-line package; 24 leads (300 mil)
SOT222-1
2000 Jun 30
8
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
SO24: plastic small outline package; 24 leads; body width 7.5 mm
SOT137-1
2000 Jun 30
9
Philips Semiconductors
Product specification
Octal buffer/driver with parity, non-inverting (3-State)
74F656A
Data sheet status
Data sheet status Objective specification Preliminary specification Product specification Product status Development Qualification Definition [1] This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. 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.
Production
[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. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 2000 All rights reserved. Printed in U.S.A. Date of release: 06-00 Document order number: 9397-750 07278
Philips Semiconductors
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