SN74LS138DR2 View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

SN74LS138DR2

1-of-8 Decoder/Demultiplexer

ON Semiconductor 

SN74LS138

1-of-8 Decoder/

Demultiplexer

The LSTTL/MSI SN74LS138 is a high speed 1-of-8 Decoder/

Demultiplexer. This device is ideally suited for high speed bipolar

memory chip select address decoding. The multiple input enables

allow parallel expansion to a 1-of-24 decoder using just three LS138

devices or to a 1-of-32 decoder using four LS138s and one inverter.

The LS138 is fabricated with the Schottky barrier diode process for

high speed and is completely compatible with all ON Semiconductor

TTL families.

• Demultiplexing Capability

• Multiple Input Enable for Easy Expansion

• Typical Power Dissipation of 32 mW

• Active Low Mutually Exclusive Outputs

• Input Clamp Diodes Limit High Speed Termination Effects

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min Typ Max Unit

VCC

TA

Supply Voltage

Operating Ambient

Temperature Range

4.75 5.0 5.25

V

0

25

70

°C

IOH

Output Current – High

IOL

Output Current – Low

–0.4 mA

8.0

mA

http://onsemi.com

LOW

POWER

SCHOTTKY

16

1

PLASTIC

N SUFFIX

CASE 648

16

1

SOIC

D SUFFIX

CASE 751B

© Semiconductor Components Industries, LLC, 2001

October, 2001 – Rev. 7

16

1

SOEIAJ

M SUFFIX

CASE 966

ORDERING INFORMATION

Device

Package

Shipping

SN74LS138N

16 Pin DIP 2000 Units/Box

SN74LS138D

SOIC–16

38 Units/Rail

SN74LS138DR2 SOIC–16 2500/Tape & Reel

SN74LS138M

SOEIAJ–16

See Note 1

SN74LS138MEL SOEIAJ–16 See Note 1

1. For ordering information on the EIAJ version of

the SOIC package, please contact your local

ON Semiconductor representative.

1

Publication Order Number:

SN74LS138/D

Share Link: