Nexperia

74HC137

3-to-8 line decoder, demultiplexer with address latches; inverting

5.2. Pin description

Table 2. Pin description

Symbol

Pin

Description

A0

1

data input 0

A1

2

data input 1

A2

3

data input 2

LE

4

latch enable input (active LOW)

E1

5

data enable input 1 (active LOW)

E2

6

data enable input 2 (active HIGH)

Y7

7

multiplexer output 7

GND

8

ground (0 V)

Y6

9

multiplexer output 6

Y5

10

multiplexer output 5

Y4

11

multiplexer output 4

Y3

12

multiplexer output 3

Y2

13

multiplexer output 2

Y1

14

multiplexer output 1

Y0

15

multiplexer output 0

VCC

16

positive supply voltage

6. Function table

Table 3. Function table

H = HIGH voltage level; L = LOW voltage level; X = don’t care.

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

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

L

L

H

H

H

H

H

H

H

H

H

H

H

L

74HC137

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 5 — 4 August 2021

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