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