Rev.3.00 Jul. 23, 2004 page 1 of 5

HD74LVC138

3-to-8-line Decoder / Demultiplexer

REJ03D0349–0300Z

(Previous ADE-205-068B (Z))

Rev.3.00

Jul. 23, 2004

Description

The HD74LVC138 has three binary select inputs in a 16 pin package. If the device is enabled these inputs determine

which one of the eight normally high outputs will go low. Two active low and one active high enables are provided to

ease the cascading of decoders. Low voltage and high-speed operation is suitable at the battery drive product (note type

personal computer) and low power consumption extends the life of a battery for long time operation.

Features

• V

• All inputs V

• Typical V

• Typical V

• High output current ±24 mA (@V

• Ordering Information

Part Name

Package Type

Package Code

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74LVC138FPEL

SOP–16 pin (JEITA)

FP–16DAV

FP

EL (2,000 pcs/reel)

HD74LVC138TELL

TSSOP–16 pin

TTP–16DAV

T

ELL (2,000 pcs/reel)

Note: Please consult the sales office for the above package availability.

Function Table

Inputs

Enable

Select

Outputs

CB

A

X

X

HX

X

X

HHHH

HH

HH

X

H

X

X

X

X

HHHH

HH

HH

L

X

X

X

X

X

HHHH

HH

HH

HL

L

L

L

L

L

HHH

HH

HH

HL

L

L

L

H

HL

HH

HH

HH

HL

L

L

HL

HHL

H

HH

HH

HL

L

L

HH

HHHL

HH

HH

HL

L

H

L

L

HHHH

L

H

HH

HL

L

H

L

H

HHHH

HL

HH

HL

L

H

HL

HHHH

HH

L

H

HL

L

H

HH

HHHH

HH

HL

H:

High level

L:

Low level

X:

Immaterial