Datasheet

December 1990 7
Philips Semiconductors Product specification
Quad 2-input multiplexer 74HC/HCT157
AC WAVEFORMS
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines” .
Fig.6 Waveforms showing the enable input (E) to output (nY) propagation delays and the output transition times.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.7 Waveforms showing the data inputs (nI
n
) and common data select input (S) to output (nY) propagation
delays.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.