54LS138

更新时间： 2024-10-27 22:45:31

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		解码器解复用器
页数	文件大小	规格书
5页	188K
描述
1-OF-8 DECODER/ DEMULTIPLEXER

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中文翻译

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数据手册

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54LS138 数据手册

SN54/74LS138

1-OF-8 DECODER/

DEMULTIPLEXER

The LSTTL/MSI SN54/74LS138 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 ex-

pansion 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 Motorola TTL families.

1-OF-8 DECODER/

DEMULTIPLEXER

LOW POWER SCHOTTKY

• 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

J SUFFIX

CERAMIC

CONNECTION DIAGRAM DIP (TOP VIEW)

CASE 620-09

NOTE:

The Flatpak version

has the same pinouts

(Connection Diagram) as

the Dual In-Line Package.

N SUFFIX

PLASTIC

CASE 648-08

D SUFFIX

SOIC

CASE 751B-03

PIN NAMES

LOADING (Note a)

HIGH

LOW

A –A

Address Inputs

0.5 U.L.

10 U.L.

0.25 U.L.

E , E

Enable (Active LOW) Inputs

Enable (Active HIGH) Input

Active LOW Outputs (Note b)

ORDERING INFORMATION

O –O

5 (2.5) U.L.

SN54LSXXXJ Ceramic

SN74LSXXXN Plastic

SN74LSXXXD SOIC

NOTES:

a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.

b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)

Temperature Ranges.

LOGIC DIAGRAM

LOGIC SYMBOL

FAST AND LS TTL DATA

5-230

12 3 4 5

中文翻译

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与54LS138相关器件

型号	品牌	获取价格	描述	数据表
54LS138/B2A	YAGEO	获取价格	Decoder/Driver, LS Series, Inverted Output, TTL, CQCC20
54LS138/B2AJC	MOTOROLA	获取价格	LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CQCC20, CERAMIC, LCC-20
54LS138/B2C	ETC	获取价格	3-To-8-Line Demultiplexer
54LS138/BEAJC	MOTOROLA	获取价格	LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CDIP16, CERDIP-16
54LS138/BFA	PHILIPS	获取价格	Decoder/Driver, TTL, CDFP16
54LS138/BFAJC	MOTOROLA	获取价格	LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CDFP16, CERFLAT-16
54LS138DMQB	ETC	获取价格	3-To-8-Line Demultiplexer
54LS138E	NSC	获取价格	Decoders/Demultiplexers
54LS138FM	ETC	获取价格	3-To-8-Line Demultiplexer
54LS138FMQB	ETC	获取价格	3-To-8-Line Demultiplexer