Page 1
INTEGRATED CIRCUITS
74F545
Octal bidirectional transceiver (with
3-State inputs/outputs)
Product specification
IC15 Data Handbook
1990 Mar 01
Page 2
Philips Semiconductors Product specification
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
FEA TURES
•High impedance NPN base inputs for reduced loading
(70µA in High and Low states) output
•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
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.
) determines the direction of logic signals
PIN CONFIGURATION
A0
1
A1
2
A2
3
A3
4
5
A4
A5
6
7
A6
A7
8
OE
9
10 11
GND
TYPE
TYPICAL
PROPAGATION DELAY
74F545 4.0ns 87mA
V
20
CC
B0
19
18
B1
17
B2
16
B3
B4
15
14
B5
13
B6
12
B7
T/R
SF01032
TYPICAL SUPPL Y
CURRENT
(TOTAL)
ORDERING INFORMATION
DESCRIPTION COMMERCIAL
RANGE
VCC = 5V ±10%,
T
= 0°C to +70°C
amb
20-Pin Plastic DIP N74F545N SOT146-1
20-Pin Plastic SOL N74F545D SOT163-1
PKG DWG #
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS DESCRIPTION
74F(U.L.)
HIGH/LOW
A0–A7, B0–B7 Data inputs 3.5/0.1 17 70µA/70µA
OE Output Enable input (active Low) 2.0/0.067 40µA/40µA
T/R Transmit/Receive input 2.0/0.067 40µA/40µA
A0 - A7 Port A 3-State outputs 150/40 3.0mA/24mA
B0 - B7 Port B 3-State outputs 750/107 15mA/64mA
NOTE: One (1.0) FAST Unit Load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOAD VALUE
HIGH/LOW
1990 Mar 01 853–0375 98992
2
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Philips Semiconductors Product specification
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
LOGIC SYMBOL
9
OE
11
T/R
= Pin 20
V
CC
GND = Pin 10
LOGIC DIAGRAM
234
A0 A1 A4 A5 A6 A7
B0 B1 B4 B5 B6 B7
18 17 16 15 14 13 12
19
56781
A3A2
B2 B3
SF01033
A0 A1 A4 A5 A6 A7
LOGIC SYMBOL (IEEE/IEC)
1
2
3
4
5
6
7
8
A3A2
234
9
11
56781
G3
3EN1
3EN2
1
2
19
18
17
16
15
14
13
12
SF01034
9
OE
11
T/R
19
VCC= Pin 20
GND = Pin 10
B0 B1 B4 B5 B6 B7
FUNCTION TABLE
INPUTS
OE T/R
L L Bus B data to Bus A
L H Bus A data to Bus B
H X Z
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
18 17 16 15 14 13 12
B2 B3
SF01035
OUTPUTS
1990 Mar 01
3
Page 4
Philips Semiconductors Product specification
I
Current applied to output in Low output state
SYMBOL
PARAMETER
UNIT
IOHHigh-level output current
IOLLow-level output current
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
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
V
V
I
IN
V
OUT
T
T
CC
IN
OUT
amb
stg
Supply voltage –0.5 to +7.0 V
Input voltage –0.5 to +7.0 V
Input current –30 to +5.0 mA
Voltage applied to output in High output state –0.5 to +5.5 V
pp
p
Operating free-air temperature range 0 to +70 °C
Storage temperature –65 to +150 °C
RECOMMENDED OPERATING CONDITIONS
V
V
V
I
T
CC
IH
IL
IK
amb
Supply voltage 4.5 5.0 5.5 V
High-level input voltage 2.0 V
Low-level input voltage 0.8 V
Input clamp current –18 mA
p
p
Operating free-air temperature range 0 70 °C
PARAMETER RATING UNIT
p
A0–A7 48 mA
B0–B7 128 mA
LIMITS
MIN NOM MAX
A0–A7 –3 mA
B0–B7 –15 mA
A0–A7 24 mA
B0–B7 64 mA
1990 Mar 01
4
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Philips Semiconductors Product specification
1
SYMBOL
PARAMETER
TEST CONDITIONS
1
UNIT
I
3mA
VOHHigh-level out ut voltage
V
IL
MAX
B0–B7
IH
I
15mA
A0–A7
I
24mA
VOLLow-level out ut voltage
V
IL
MAX
B0–B7
IH
I
MAX
In ut current at
I
V
MAX
4
TEST
CONDITIONS
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
MIN TYP
V
IK
I
I
I
IH
I
IL
I
OZH+IIH
I
OZL+IIL
OS
I
CC
A0–A7
B0–B7
p
VCC = MIN,
=
VIH = MIN
VCC = MIN,
=
p
,
VIH = MIN
= –
OH
,
= –
OH
=
OL
=
OL
Input clamp voltage VCC = MIN, II = I
p
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
3
current
Supply current (total)
OE, T/R VCC = 0.0V, VI = 7.0V 100 µA
A0–A7,
B0–B7
OE, T/R
only
VCC = 5.5V, VI = 5.5V 1.0 mA
VCC = MAX, VI = 2.7V 40 µA
VCC = MAX, VI = 0.5V –40 µA
VCC = MAX, VI = 2.7V 70 µA
V
= MAX, VI = 0.5V –70 µA
CC
A0–A7
B0–B7
I
CCH
I
CCL
I
CCZ
VCC = MAX OE=T/R =Bn=GND 96 120 mA
=
CC
T/R=An=4.5V, OE=GND 84 100 mA
T/R=Bn=GND, OE=4.5V 96 120 mA
IK
±10%V
±5%V
±10%V
±5%V
±10%V
±5%V
±10%V
±5%V
CC
CC
CC
CC
2.4 V
CC
2.7 3.3 V
2.0 V
CC
2.0 V
CC
CC
–60 –150 mA
–100 –225 µA
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 V
3. Not more than one output should be shorted at a time. For testing I
= 5V, T
CC
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
amb
= 25°C.
, the use of high-speed test apparatus and/or sample-and-hold
OS
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, I
4. Measure I
with outputs open.
CC
should be performed last.
OS
2
MAX
0.35 0.50 V
0.35 0.50 V
0.55 V
0.42 0.55 V
–0.73 –1.2 V
AC ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
1990 Mar 01
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
LIMITS
T
= +25°C T
amb
= 0°C to +70°C
amb
VCC = +5.0V VCC = +5.0V ± 10% UNIT
CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω
MIN TYP MAX MIN MAX
1.5
2.5
6.0
5.5
2.5
2.0
3.5
4.5
8.5
8.0
5.0
4.5
5.5
6.5
10.5
9.5
7.0
6.5
1.5
2.5
6.0
5.5
2.5
2.0
5
6.5
7.0
11.0
10.0
8.0
7.5
ns
ns
ns
ns
ns
ns
Page 6
Philips Semiconductors Product specification
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
AC WAVEFORMS
For all waveforms, VM = 1.5V.
OE
An, Bn
Bn, An
V
V
M
t
PLH
V
M
t
PHL
V
M
V
M
An, Bn
M
t
PZL
V
M
t
PLZ
V
M
VOL+0.3V
SF00202
Waveform 1. Propagation Delay Data for Non-Inverting Output
OE
V
M
t
PHZ
V
M
VOH–0.3V
0V
SF00203
An, Bn
V
M
t
PZH
Waveform 2. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
TEST CIRCUIT AND WAVEFORM
V
V
PULSE
GENERATOR
IN
R
Test Circuit for 3-State Outputs
SWITCH POSITION
TEST SWITCH
t
t
PLZ
PZL
closed
closed
All other open
T
D.U.T.
CC
V
OUT
R
L
C
R
L
L
7.0V
NEGATIVE
PULSE
POSITIVE
PULSE
Waveform 3. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
t
90%
10%
V
M
10%
t
THL (tf
t
TLH (tr
90%
V
M
w
10%
)
)
t
)
TLH (tr
t
)
THL (tf
90%
t
w
90%
V
M
V
M
10%
Input Pulse Definition
SF00204
AMP (V)
0V
AMP (V)
0V
DEFINITIONS:
= Load resistor;
R
L
C
= Load capacitance includes jig and probe capacitance;
L
R
= Termination resistance should be equal to Z
T
1990 Mar 01
see AC electrical characteristics for value.
see AC electrical characteristics for value.
pulse generators.
OUT
of
family
74F
6
INPUT PULSE REQUIREMENTS
V
amplitude
3.0V
M
1.5V
rep. rate
1MHz 500ns
t
w
t
TLHtTHL
2.5ns 2.5ns
SF00777
Page 7
Philips Semiconductors Product specification
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1
1990 Mar 01
7
Page 8
Philips Semiconductors Product specification
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
1990 Mar 01
8
Page 9
Philips Semiconductors Product specification
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
NOTES
1990 Mar 01
9
Page 10
Philips Semiconductors Product specification
74F545Octal bidirectional transceiver (with 3-State inputs/outputs)
Data sheet status
Data sheet
status
Objective
specification
Preliminary
specification
Product
specification
Product
status
Development
Qualification
Production
Definition
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.
[1]
[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
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print code Date of release: 10-98
Document order number: 9397-750-05136
yyyy mmm dd
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