NXP Semiconductors
74HC238; 74HCT238
3-to-8 line decoder/demultiplexer
E1, E2 input
V
M
t
PHL
V
Y
t
PLH
V
M
V
X
t
THL
t
TLH
001aag758
Yn output
Measurement points are given in
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 7. Input (E1, E2) to output (Yn) propagation delays and output transition times
Table 8.
Type
74HC238
74HCT238
Measurement points
Input
V
M
0.5V
CC
1.3 V
Output
V
M
0.5V
CC
1.3 V
V
X
0.1V
CC
0.1V
CC
V
Y
0.9V
CC
0.9V
CC
74HC_HCT238_3
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 03 — 16 July 2007
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