SN74LVC139A

DUAL 2LINE TO 4LINE DECODER/DEMULTIPLEXER

SCAS341O − MARCH 1994 − REVISED OCTOBER 2003

2

POST OFFICE BOX 655303

description/ordering information (continued)

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator

in a mixed 3.3-V/5-V system environment.

terminal assignments

1234

A

1A

1G

VCC

2G

B

1B

NC

NC

2A

C

1Y1

1Y0

2Y0

2B

D

1Y2

NC

NC

2Y1

E

GND

1Y3

2Y3

2Y2

NC − No internal connection

FUNCTION TABLE

(each decoder/demultiplexer)

INPUTS

OUTPUTS

G

SELECT

OUTPUTS

G

B

A

Y3

Y2

Y1

Y0

L

L

L

H

H

H

L

L

L

HH

HL

H

L

H

LH

LH

H

L

H

HL

HH

H

H

X

X

H

H

H

H

GQN OR ZQN PACKAGE

(TOP VIEW)

1

234

A

B

C

D

E