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INTEGRATED CIRCUITS
74F545 Octal bidirectional transceiver (with 3-State inputs/outputs)
Product specification IC15 Data Handbook 1990 Mar 01
Philips Semiconductors
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
FEATURES
* High impedance NPN base inputs for reduced loading
(70A in High and Low states) output
PIN CONFIGURATION
A0 A1 A2 A3 A4 A5 A6 1 2 3 4 5 6 7 8 9 20 VCC 19 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 T/R
* 8-bit bidirectional data flow reduces system package count * 3-State inputs/outputs for interfacing with bus oriented systems * 24mA and 64mA bus drive capability on A and B ports,
respectively
* Transmit/Receive and Output Enable simplify control logic
DESCRIPTION
The 74F545 is an 8-bit, 3-State, high speed transceiver. It provides bidirectional drive for the bus-oriented microprocessor and digital communications systems. Straight through bidirectional transceivers are featured, with 24mA bus drive capability on the A ports and 64mA bus drive capability on the B ports. One input, Transmit/Receive (T/R) determines the direction of logic signals through the bidirectional transceiver. Transmit enables data from A ports to B ports; Receive enables data from B ports to A ports. The Output Enable input disables both A and B ports by placing them in a 3-State condition. The 74F545 performs the same function as the 74F245, the only difference being package pin assignment.
A7 OE
GND 10
SF01032
TYPE 74F545
TYPICAL PROPAGATION DELAY 4.0ns
TYPICAL SUPPLY CURRENT (TOTAL) 87mA
ORDERING INFORMATION
DESCRIPTION COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C N74F545N N74F545D PKG DWG #
20-Pin Plastic DIP 20-Pin Plastic SOL
SOT146-1 SOT163-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS A0-A7, B0-B7 OE T/R A0 - A7 B0 - B7 Data inputs Output Enable input (active Low) Transmit/Receive input Port A 3-State outputs Port B 3-State outputs DESCRIPTION 74F(U.L.) HIGH/LOW 3.5/0.117 2.0/0.067 2.0/0.067 150/40 750/107 LOAD VALUE HIGH/LOW 70A/70A 40A/40A 40A/40A 3.0mA/24mA 15mA/64mA
NOTE: One (1.0) FAST Unit Load is defined as: 20A in the High state and 0.6mA in the Low state.
1990 Mar 01
2
853-0375 98992
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
LOGIC SYMBOL
1 2 3 4 5 6 7 8
LOGIC SYMBOL (IEEE/IEC)
9 G3 3EN1
A0 9 11 OE
A1
A2
A3
A4
A5
A6
A7
11
3EN2
1 T/R 1 B0 B1 B2 B3 B4 B5 B6 B7 2 3 2 19 18 17 16 15 14 13 12
VCC = Pin 20 GND = Pin 10
19
18
17
16
15
14
13
12 4
SF01033
5 6 7 8
SF01034
LOGIC DIAGRAM
A0 1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8
OE 9 11
T/R
19 VCC = GND = Pin 20 Pin 10 B0
18 B1
17 B2 B3
16
15 B4
14 B5
13 B6
12 B7
SF01035
FUNCTION TABLE
INPUTS OE L L H L X Z = = = = T/R L H Bus B data to Bus A Bus A data to Bus B Z OUTPUTS
H X High voltage level Low voltage level Don't care High impedance "off" state
1990 Mar 01
3
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
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 IO OUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in High output state Current applied to output in Low output state Operating free-air temperature range Storage temperature A0-A7 B0-B7 PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5.0 -0.5 to +5.5 48 128 0 to +70 -65 to +150 UNIT V V mA V mA mA C C
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VIH VIL IIK IO OH Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level High level output current A0-A7 B0-B7 Low-level Low level output current Operating free-air temperature range A0-A7 B0-B7 0 PARAMETER LIMITS MIN 4.5 2.0 0.8 -18 -3 -15 24 64 70 NOM 5.0 MAX 5.5 UNIT V V V mA mA mA mA mA C
IO OL Tamb
1990 Mar 01
4
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER A0-A7 B0-B7 VOH High-level out ut voltage output B0-B7 A0-A7 VOL Low-level out ut voltage output B0-B7 VIK II IIH IIL IOZH+IIH IOZL+IIL IOS Input clamp voltage Input current at In ut maximum input voltage High-level input current Low-level input current Off-state output current High-level voltage applied Off-state output current Low-level voltage applied Short-circuit output current3 Supply current (total)4 A0-A7 B0-B7 ICCH ICC ICCL ICCZ VCC = MAX OE, T/R A0-A7, B0-B7 OE, T/R only TEST CONDITIONS1 IOH = -3mA IOH = -15mA IOL = 24mA IOL = MAX 10%VCC 5%VCC 10%VCC 5%VCC 10%VCC 5%VCC 10%VCC 5%VCC 0.42 -0.73 LIMITS MIN 2.4 2.7 2.0 2.0 0.35 0.35 0.50 0.50 0.55 0.55 -1.2 100 1.0 40 -40 70 -70 -60 -100 84 96 96 -150 -225 100 120 120 3.3 TYP2 MAX UNIT V V V V V V V V V A mA A A A A mA A mA mA mA
VCC = MIN, MIN MAX, VIL = MAX VIH = MIN
VCC = MIN, MIN VIL = MAX, MAX VIH = MIN
VCC = MIN, II = IIK VCC = 0.0V, VI = 7.0V VCC = 5.5V, VI = 5.5V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.5V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.5V VCC = MAX T/R=An=4.5V, OE=GND OE=T/R =Bn=GND T/R=Bn=GND, OE=4.5V
NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value under the 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 should be performed last. 4. Measure ICC with outputs open.
AC ELECTRICAL CHARACTERISTICS
TEST CONDITIONS LIMITS Tamb = +25C Tamb = 0C to +70C VCC = +5.0V VCC = +5.0V 10% CL = 50pF, RL = 500 CL = 50pF, RL = 500 MIN TYP MAX MIN MAX 1.5 3.5 5.5 1.5 6.5 2.5 4.5 6.5 2.5 7.0 6.0 8.5 10.5 6.0 11.0 5.5 8.0 9.5 5.5 10.0 2.5 5.0 7.0 2.5 8.0 2.0 4.5 6.5 2.0 7.5
SYMBOL
PARAMETER
UNIT
tPLH tPHL tPZH tPZL tPHZ tPLZ
Propagation delay An to Bn, Bn to An Output Enable time to High or Low level Output Disable time from High or Low level
Waveform 1 Waveform 2 Waveform 3 Waveform 2 Waveform 3
ns ns ns ns ns ns
1990 Mar 01
5
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
AC WAVEFORMS
For all waveforms, VM = 1.5V.
OE An, Bn VM tPLH VM tPHL An, Bn VM VM VM VOL+0.3V VM tPZL VM tPLZ
Bn, An
SF00202
SF00204
Waveform 1. Propagation Delay Data for Non-Inverting Output
Waveform 3. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level
OE VM tPZH VM tPHZ VOH-0.3V 0V
VM An, Bn
SF00203
Waveform 2. 3-State Output Enable Time to High Level and Output Disable Time from High 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
1990 Mar 01
6
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
1990 Mar 01
7
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1990 Mar 01
8
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
NOTES
1990 Mar 01
9
Philips Semiconductors
Product specification
Octal bidirectional transceiver (with 3-State inputs/outputs)
74F545
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 chages 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 1998 All rights reserved. Printed in U.S.A. print code Document order number: Date of release: 10-98 9397-750-05136
Philips Semiconductors
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