SN74LS138 datasheet(1/8 Pages) ONSEMI

Part #	SN74LS138

Description	LOW POWER SCHOTTKY

PDF	8 Pages

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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December, 1999 – Rev. 6

1

Publication Order Number:

SN74LS138/D

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

Supply Voltage

4.75

5.0

5.25

V

TA

Operating Ambient

Temperature Range

0

25

70

°C

IOH

Output Current – High

– 0.4

mA

IOL

Output Current – Low

8.0

mA

LOW

POWER

SCHOTTKY

Device

Package

Shipping

ORDERING INFORMATION

SN74LS138N

16 Pin DIP

2000 Units/Box

SN74LS138D

16 Pin

SOIC

D SUFFIX

CASE 751B

http://onsemi.com

2500/Tape & Reel

PLASTIC

N SUFFIX

CASE 648

16

1

16

1

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