Datasheet

December 1990 7
Philips Semiconductors Product specification
Dual 4-bit binary ripple counter 74HC/HCT393
AC WAVEFORMS
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines” .
Fig.7 Waveforms showing the clock (nCP) to output (1Q
n
,2Q
n
) propagation delays, the clock pulse width, the
output transition times and the maximum clock 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.8 Waveforms showing the master reset (nMR) pulse width, the master reset to output (Q
n
) propagation
delays and the master reset to clock (nCP) removal time.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.