74HC137DB View Datasheet(PDF) -
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Philips Semiconductors
74HC137
3-to-8 line decoder, demultiplexer with address latches; inverting
6.2 Pin description
Table 3:
Symbol
A0
A1
A2
LE
E1
E2
Y7
GND
Y6
Y5
Y4
Y3
Y2
Y1
Y0
VCC
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
7. Functional description
Description
data input 0
data input 1
data input 2
latch enable input (active LOW)
data enable input 1 (active LOW)
data enable input 2 (active HIGH)
multiplexer output 7
ground (0 V)
multiplexer output 6
multiplexer output 5
multiplexer output 4
multiplexer output 3
multiplexer output 2
multiplexer output 1
multiplexer output 0
positive supply voltage
7.1 Function table
Table 4: Function table [1]
Enable
Input
Output
LE E1 E2 A0 A1 A2 Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
H
L
H
X
X
X
stable
X
H
X
X
X
X
H
H
H
H
H
H
H
H
X
X
L
X
X
X
H
H
H
H
H
H
H
H
L
L
H
L
L
L
L
H
H
H
H
H
H
H
H
L
L
H
L
H
H
H
H
H
H
L
H
L
H
H
L
H
H
H
H
H
H
H
L
H
H
H
L
H
H
H
H
L
L
H
H
H
H
H
L
H
H
H
H
L
H
H
H
H
H
H
L
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
L
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
9397 750 13804
Product data sheet
Rev. 03 — 11 November 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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