Datasheet

74LV138_3 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 03 — 15 November 2007 8 of 17
NXP Semiconductors
74LV138
3-to-8 line decoder/demultiplexer; inverting
11. Waveforms
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 6. The inputs An, E3 to outputs Yn propagation delays
001aah080
Yn output
V
OH
V
OL
V
CC
GND
An, E3 input
V
M
t
PHL
t
PLH
V
M
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 7. The inputs En to outputs Yn propagation delays
001aah081
t
PLH
t
PHL
V
M
V
M
Yn output
E1, E2 input
V
CC
GND
V
OH
V
OL
Table 8. Measurement points
Supply voltage
V
CC
Input
V
M
Output
V
M
< 2.7 V 0.5V
CC
0.5V
CC
2.7 V to 3.6 V 1.5 V 1.5 V
≥ 4.5 V 0.5V
CC
0.5V
CC