Datasheet

December 1990 7
Philips Semiconductors Product specification
Quad bistable transparent latch 74HC/HCT75
AC WAVEFORMS
Fig.6 Waveforms showing the data input (nD) to
output (nQ) 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 input (nD) to
output (nQ) 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.8 Waveforms showing the latch enable input
(LE
n-n
) pulse width, the latch enable input to
outputs (nQ, nQ) 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.
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines” .
Fig.9 Waveforms showing the data set-up and
hold times for nD input to LE
n-n
input.
The shaded areas indicate when the input is permitted to change
for predictable output performance.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.