Datasheet

74HC_HCT154_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 12 February 2007 11 of 21
NXP Semiconductors
74HC154; 74HCT154
4-to-16 line decoder/demultiplexer
11. Waveforms
Measurement points are given in Table 9. Measurement points are given in Table 9.
Fig 7. Propagation delay address input (An) to output
(
Yn) and transition time output (Yn)
Fig 8. Propagation delay enable input (
En) to output
(
Yn) and transition time output (Yn)
001aab073
t
PLH
t
PHL
t
TLH
90 %
10 %
V
M
t
THL
90 %
10 %
V
M
V
M
V
M
An input
Yn output
GND
V
I
V
OH
V
OL
001aab074
t
THL
90 %
10 %
En input
Yn output
GND
V
I
V
OH
V
OL
t
PHL
t
PLH
V
M
t
TLH
90 %
10 %
V
M
V
M
V
M
Table 9. Measurement points
Type Input Output
V
M
V
M
74HC154 0.5V
CC
0.5V
CC
74HCT154 1.3 V 1.3 V