Philips Semiconductors
Product specification
Octal D-type flip-flop; positive edge-trigger;
3-state
AC WAVEFORMS
74HC/HCT374
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT : V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.6
Waveforms showing the clock (CP) to output (Q
n
) propagation delays, the clock pulse width, output
transition times and the maximum clock pulse frequency.
(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 3-state enable and disable times.
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.
Fig.8 Waveforms showing the data set-up and hold times for D
n
input.
December 1990
7
PHILIPS [ NXP SEMICONDUCTORS ]
