M74HC139

2/9

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

TRUTH TABLE

LOGIC DIAGRAM

This logic diagram has not be used to estimate propagation delays

PIN No

SYMBOL

NAME AND FUNCTION

1, 15

1G, 2G

Enable Inputs

2, 3

1A, 1B

Address Inputs

4, 5, 6, 7

12, 11, 10, 9

14, 13

2A, 2B

Address Inputs

8

GND

Ground (0V)

16

Positive Supply Voltage

INPUTS

OUTPUTS

SELECTED

OUTPUT

ENABLE SELECT

G

BA

H

X

X

H

H

H

H

NONE

L

LLL

H

H

H

LL

H

H

L

H

H

LH

L

H

H

L

H

L

HHHH

H

L