Philips N74F158AN, N74F157AN, N74F157N, N74F157D, N74F157AD Datasheet
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74F157*, 74F157A, 74F158*, 74F158A
Data selectors/multiplexers
Product specification 1996 Mar 12
INTEGRATED CIRCUITS
IC15 Data Handbook
* Discontinued part. Please see the Discontinued Product List in Section 1, page 21.
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
2
1996 Mar 12 853-0346 16555
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
) is active when Low.
When E
is High, all of the outputs (Yn) are forced Low regardless of
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
n).
•Industrial temperature range (–10°C to +85°C) available for
74F157A
TYPE
TYPICAL
PROPAGATION
DELA Y
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F157 4.6ns 15mA
74F157A 4.6ns 15mA
74F158 3.7ns 10mA
74F158A 3.7ns 10mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%, T
amb
= 0°C to +70°C
INDUSTRIAL RANGE
VCC = 5V ±10%, T
amb
= –40°C to +85°C
PKG. DWG. #
16-pin plastic DIP N74F157AN, N174F158AN I74F157AN SOT38-4
16-pin plastic SO N74F157AD, N74F158AD I74F157AD SOT109-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW
Ina, Inb, Inc, Ind Data inputs 1.0/1.0 20µA/0.6mA
S Select input 1.0/1.0 20µA/0.6mA
E Enable input 1.0/1.0 20µA/0.6mA
Ya–Yd Data outputs (74F157/74F157A) 50/33 1.0mA/20mA
Ya–Yd Data outputs (74F158/74F158A) 50/33 1.0mA/20mA
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
16
15
14
13
12
11
107
6
5
4
3
2
1
Yb
V
CC
Yd
I0c
I1c
I1d
E
I0d
S
I0a
I1b
I1a
Ya
I0b
98GND Yc
SF00215
16
15
14
13
12
11
107
6
5
4
3
2
1
Y
b
V
CC
Yd
I0c
I1c
I1d
E
I0d
S
I0a
I1b
I1a
Y
a
I0b
98GND Yc
SF00216
LOGIC SYMBOLS, 74F157A 74F158A
VCC = Pin 16
GND = Pin 8
SF00217
1
15
S
E
2356111014
I0a I1a I0b I1b I0c I1c I0d
Ya Yb Yc Yd
47912
13
I1d
VCC = Pin 16
GND = Pin 8
SF00218
1
15
S
E
2356111014
I0a I1a I0b I1b I0c I1c I0d
Ya Yb Yc Yd
47912
13
I1d
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
1996 Mar 12
3
IEEE/IEC SYMBOLS, 74F157A 74F158A
SF00219
2
1
1
G1
15
EN
3
4
1
MUX
5
6
7
11
10
9
14
13
12
SF00220
2
1
1
G1
15
EN
3
4
1
MUX
5
6
7
11
10
9
14
13
12
LOGIC DIAGRAM, 74F157A
I0a I1a I0b I1b I0c I1c I0d I1d E S
2 3 5 6 11 10 14 13 15 1
47912
Ya Yb Yc Yd
V
CC
= Pin 16
GND = Pin 8
SF00225
FUNCTION TABLE, 74F157A
INPUTS OUTPUT
E S I0n I1n Yn
H X X X L
L H X L L
L H X H H
L L L X L
L L H X H
H = High voltage level
L = Low voltage level
X = Don’t care
74F158A
I0a I1a I0b I1b I0c I1c I0d I1d E S
2 3 5 6 11 10 14 13 15 1
47912
Ya Yb Yc Yd
V
CC
= Pin 16
GND = Pin 8
SF00226
74F158A
INPUTS OUTPUT
E S I0n I1n Yn
H X X X H
L L L X H
L L H X L
L H X L H
L H X H L
H = High voltage level
L = Low voltage level
X = Don’t care
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