Datasheet
Table Of Contents
September 1993 8
Philips Semiconductors Product speciļ¬cation
4-to-16 line decoder/demultiplexer with
input latches
74HC/HCT4514
AC WAVEFORMS
Fig.6 Waveforms showing the input (A
n
, LE, E) to output (Q
n
) 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 minimum pulse width of the latch enable input (LE) and the set-up and hold times
for LE to A
n
. Set-up and hold times are shown as positive values but may be specified as negative values.
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.