December 1990 4
Philips Semiconductors Product specification
Quad 2-input multiplexer 74HC/HCT157
Fig.4 Functional diagram.
FUNCTION TABLE
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
INPUTS OUTPUT
ESnI
0
nI
1
nY
HXX X L
L
L
L
L
L
L
H
H
L
H
X
X
X
X
L
H
L
H
L
H
Fig.5 Logic diagram.
