SN74LS138NDS

更新时间： 2024-09-21 13:13:51

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		解码器驱动器解复用器逻辑集成电路光电二极管输入元件
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数据手册

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SN74LS138NDS 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

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与SN74LS138NDS相关器件

型号	品牌	获取价格	描述	数据表
SN74LS138NE4	TI	获取价格	3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SN74LS138NP3	ROCHESTER	获取价格	Decoder/Driver, LS Series, Inverted Output, TTL, PDIP16, PLASTIC, MS-001BB, DIP-16
SN74LS138NP3	TI	获取价格	LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16, PLASTIC, MS-001BB, DIP-16
SN74LS138NS	MOTOROLA	获取价格	LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16, PLASTIC, DIP-16
SN74LS138NSR	TI	获取价格	3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SN74LS138NSRE4	TI	获取价格	3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SN74LS138NSRG4	TI	获取价格	3-LINE TO 8-LINE DECODERS / DEMUL TIPLEXERS
SN74LS139	ONSEMI	获取价格	LOW POWER SCHOTTKY
SN74LS139A	TI	获取价格	DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SN74LS139AD	TI	获取价格	DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS