MC74F157D Ver la hoja de datos (PDF) - Motorola => Freescale
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MC74F157D Datasheet PDF : 2 Pages
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QUAD 2-INPUT MULTIPLEXER
The MC74F157A is a high-speed quad 2-input multiplexer. Four bits of data
from two sources can be selected using the common Select and Enable in-
puts. The four buffered outputs present the selected data in the true (non-in-
verted) form. The F157A can also be used to generate any four of the 16 differ-
ent functions to two variables.
• AC Enhanced Version of the F157
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC E I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
12345678
S I0a I1a Za I0b I1b Zb GND
LOGIC DIAGRAM
I0a I1a I0b I1b I0c I1c I0d I1d E
S
Za
Zb
Zc
Zd
FUNCTION TABLE
Inputs
E
S
I0
I1
H
X
X
X
L
H
X
L
L
H
X
H
L
L
L
X
L
L
H
X
H = HIGH Voltage Level; L = LOW Voltage Level; X = Don’t Care
Output
Z
L
L
H
L
H
MC74F157A
QUAD 2-INPUT
MULTIPLEXER
FAST™ SHOTTKY TTL
16
1
J SUFFIX
CERAMIC
CASE 620-09
16
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
MC74FXXXJ
MC74FXXXN
MC74FXXXD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
1
S
E
15
4
Za
I0a
2
I1a
3
7
Zb
I0b
5
I1b
6
12
Zc
I0c
14
I1c
13
9
Zd
VCC = PIN 16
GND = PIN 8
I0d
11
I1d
10
FAST AND LS TTL DATA
4-67
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