M54HC139

2/8

IEC LOGIC SYMBOLS

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

TRUTH TABLE

LOGIC DIAGRAM

This logic diagram has not be used to estimate propagation delays

PIN N°

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

XHHH

H

NONE

LL

L

L

H

H

H

LL

H

H

L

H

H

LH

L

H

H

L

H

L

H

H

HHH

L