74HC138D NXP Semiconductors, 74HC138D Datasheet - Page 14

• Manufacturer Part Number: 74HC138D
• Description: Decoder/Demultiplexer Single 3-to-8 16-Pin SO Bulk
• Manufacturer: NXP Semiconductors

Specifications of 74HC138D

• Package: 16SO
• Logic Function: Decoder/Demultiplexer
• Logic Family: HC
• Number Of Element Outputs: 8
• Number Of Elements Per Chip: 1
• Number Of Input Enables Per Element: 3
• Demultiplexing Capability: 1-of-8
• Fabrication Technology: CMOS
• Typical Operating Supply Voltage: 5 V
• Operating Temperature: -40 to 125 °C

Philips Semiconductors
12. Waveforms
74HC_HCT138_3
Product data sheet
Table 11:
Type
74HC138
74HCT138
Fig 6. Propagation delay input (An) and enable input (E3) to output (Yn) and transition
Fig 7. Propagation delay enable input (En) to output (Yn) and transition time output (Yn)
V
N = number of inputs switching;
(C
CC
L
= supply voltage in V;
Measurement points are given in
V
time output (Yn)
Measurement points are given in
V
V
OL
OL
Measurement points
CC
and V
and V
2
f
o
OH
OH
) = sum of the outputs.
are typical voltage output drop that occur with the output load.
are typical voltage output drop that occur with the output load.
Rev. 03 — 23 December 2005
An, E3
E1, E2
output
output
input
input
Yn
Yn
GND
GND
V
V
V
V
V
V
OH
Input
V
0.5V
1.3 V
CC
OL
CC
OH
OL
M
CC
Table
Table
11.
11.
V
V
M
M
3-to-8 line decoder/demultiplexer; inverting
V
V
M
M
t
t
PHL
PHL
74HC138; 74HCT138
t
t
THL
THL
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Output
V
0.5V
1.3 V
t
t
PLH
mna373
PLH
mna374
M
t
t
TLH
TLH
CC
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