74F157*, 74F157A, 74F158*, 74F158A
Data selectors/multiplexers
* Discontinued part. Please see the Discontinued Product List in Section 1, page 21.
Product specification1996 Mar 12
IC15 Data Handbook
Page 2
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
74F157A:Quad 2-input data selector/multiplexer, non-inverting
74F158A:Quad 2-input data selector/multiplexer, inverting
DESCRIPTION
The 74F157A is a high speed Quad 2-Input Multiplexer which
selects 4 bits of data from one of two sources under the control of a
common Select input (S). The Enable input (E
When E
is High, all of the outputs (Yn) are forced Low regardless of
) is active when Low.
all other input conditions.
Moving data from two registers to a common output bus is a
common use of the 74F157A. The state of the Select input
determines the particular register from which the data comes.
The device is the logic implementation of a 4-pole, 2-position switch
where the position of the switch is determined by the logic levels
supplied to the Select input.
The 74F158A is similar, but has inverting outputs (Y
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
PIN CONFIGURATIONS, 74F157A 74F158A
I0a
I1a
I0b
I1b
S
I0a
I1a
I0b
I1b
1
2
3
Y
a
4
5
6
b
Y
1
S
2
3
4
Ya
5
6
Yb
16
15
14
13
12
11
107
98GNDYc
SF00215
V
E
I0d
I1d
Yd
I0c
I1c
CC
16
15
14
13
12
11
107
98GNDYc
SF00216
LOGIC SYMBOLS, 74F157A 74F158A
2356111014
13
2356111014
V
E
I0d
I1d
Yd
I0c
I1c
CC
13
I0a I1a I0b I1b I0c I1c I0d
1
15
VCC = Pin 16
GND = Pin 8
S
E
Ya Yb Yc Yd
47912
1996 Mar 12853-0346 16555
I1d
SF00217
2
1
15
VCC = Pin 16
GND = Pin 8
I0a I1a I0b I1b I0c I1c I0d
S
E
Ya Yb Yc Yd
47912
I1d
SF00218
Page 3
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
IEEE/IEC SYMBOLS, 74F157A 74F158A
1
15
2
3
5
6
11
10
14
13
G1
EN
1
1
MUX
SF00219
LOGIC DIAGRAM, 74F157A
I0a I1aI0b I1bI0c I1cI0d I1dES
235611101413151
1
15
4
7
9
12
2
3
5
6
11
10
14
13
G1
EN
1
1
MUX
4
7
9
12
SF00220
74F158A
I0a I1aI0b I1bI0c I1cI0d I1dES
235611101413151
47912
YaYbYcYd
= Pin 16
V
CC
GND = Pin 8
FUNCTION TABLE, 74F157A
INPUTSOUTPUT
ESI0nI1nYn
HXXXL
LHXLL
LHXHH
LLLXL
LLHXH
H = High voltage level
L = Low voltage level
X = Don’t care
1996 Mar 12
SF00225
47912
YaYbYcYd
= Pin 16
V
CC
GND = Pin 8
74F158A
INPUTSOUTPUT
ESI0nI1nYn
HXXXH
LLLXH
LLHXL
LHXLH
LHXHL
H = High voltage level
L = Low voltage level
X = Don’t care
3
SF00226
Page 4
Philips Semiconductors Product specification
T
O erating free-air tem erature range
°C
SYMBOL
PARAMETER
UNIT
T
Operating free air temperature range
1
SYMBOL
PARAMETER
TEST CONDITIONS
1
UNIT
VOHHigh-level out ut voltage
V
VOLLow-level out ut voltage
V
4
ICCSu ly current (total)
4
V
MAX
74F157A, 74F158AData selectors/multiplexers
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit 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
I
OUT
T
CC
IN
OUT
amb
stg
Supply voltage–0.5 to +7.0V
Input voltage –0.5 to +7.0V
Input current–30 to +5mA
Voltage applied to output in High output state–0.5 to V
Current applied to output in Low output state40mA
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
MINTYP
p
p
V
IK
I
I
I
IH
I
IL
I
OS
Input clamp voltageVCC = MIN, II = I
Input current at maximum input voltageVCC = MAX, VI = 7.0V100µA
High-level input currentVCC = MAX, VI = 2.7V20µA
Low-level input currentVCC = MAX, VI = 0.5V–0.6mA
Short-circuit output current
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 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
is measured with 4.5V applied to all inputs and all outputs open.
4. I
CC
tests should be performed last.
OS
2
MAX
0.300.50
0.300.50
–0.73–1.2V
15.023.0mA
14.019.0mA
1996 Mar 12
4
Page 5
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
AC ELECTRICAL CHARACTERISTICS FOR 74F157A AND 74F158A
LIMITS
SYMBOLPARAMETER
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Propagation delay
I0n, I1n to Yn
Propagation delay
E to Yn
Propagation delay
S to Yn
Propagation delay
I0n, I1n to Yn
Propagation delay
E to Yn
Propagation delay
S to Yn
74F157A
74F158A
TEST
CONDITION
Waveform 1
Waveform 3
Waveform 1
Waveform 2
Waveform 4
Waveform 2
VCC = +5.0V
T
= +25°C
amb
C
= 50pF
L
= 500Ω
R
L
MINTYPMAXMINMAXMINMAX
3.5
4.5
2.5
3.5
6.0
7.5
4.0
5.0
5.5
7.5
4.5
6.0
3.0
4.0
1.5
2.5
4.5
5.5
5.0
6.0
4.5
6.5
4.0
5.5
VCC = +5.0V ± 10%
T
amb
6.5
5.0
9.0
6.5
10.0
7.5
6.0
4.0
7.0
7.5
8.5
7.5
= 0°C to +70°C
C
= 50pF
L
= 500Ω
R
L
3.0
1.5
5.5
4.0
5.0
4.0
2.5
1.0
4.0
5.0
4.0
3.5
7.0
6.0
10.5
7.0
11.0
8.5
7.0
4.5
7.5
8.0
9.5
8.0
VCC = +5.0V ± 10%
T
= –40°C to +85°C
amb
C
= 50pF
L
= 500Ω
R
L
3.0
1.5
5.5
4.0
5.0
4.0
7.5
6.5
11.0
7.5
11.5
9.0
——ns
——ns
——ns
UNIT
ns
ns
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V
I0n, I1n, S
Yn
Waveform 1. Propagation Delay for Data and Select to Output
E
Yn
Waveform 3. Propagation Delay for Enable to Output
V
V
M
t
PHL
M
t
PLH
V
M
t
PLH
V
M
V
M
t
PHL
V
M
V
M
SF00221
V
M
SF00223
I0n, I1n, S
Yn
V
M
t
PLH
V
M
t
PHL
V
M
V
M
SF00222
Waveform 2. Propagation Delay for Data and Select to Output
E
Yn
V
M
t
PHL
V
M
t
PLH
V
M
V
M
SF00224
Waveform 4. Propagation Delay for Enable to Output
1996 Mar 12
5
Page 6
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
TEST CIRCUIT AND WAVEFORMS
V
CC
PULSE
GENERATOR
V
IN
R
T
D.U.T.
V
OUT
R
C
L
L
Test Circuit for Totem-Pole Outputs
DEFINITIONS:
= Load resistor;
R
L
see AC ELECTRICAL CHARACTERISTICS for value.
= Load capacitance includes jig and probe capacitance;
* Discontinued part. Please see the Discontinued Product List in Section 1, page 21.
1996 Mar 12
7
Page 8
Philips Semiconductors Product specification
Data selectors/multiplexers
74F157*, 74F157A
74F158*, 74F158A
SO16: plastic small outline package; 16 leads; body width 3.9 mmSOT109-1
* Discontinued part. Please see the Discontinued Product List in Section 1, page 21.
1996 Mar 12
8
Page 9
Philips Semiconductors Product specification
Data selectors/multiplexers
74F157*, 74F157A
74F158*, 74F158A
NOTES
* Discontinued part. Please see the Discontinued Product List in Section 1, page 21.
1996 Mar 12
9
Page 10
Philips SemiconductorsProduct specification
Data selectors/multiplexers
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.
74F157*, 74F157A,
74F158
[1]
*, 74F158A
[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
* Discontinued part. Please see the Discontinued Product List in Section 1, page 21.
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print codeDate of release: 10-98
Document order number:9397-750-05083
yyyy mmm dd
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