SN74LS139NS

更新时间： 2024-12-01 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
页数	文件大小	规格书
5页	176K
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数据手册

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SN74LS139NS 数据手册

SN54/74LS139

DUAL 1-OF-4 DECODER/

DEMULTIPLEXER

The LSTTL/MSI SN54/74LS139 is a high speed Dual 1-of-4 Decoder/De-

multiplexer. The device has two independent decoders, each accepting two

inputs and providing four mutually exclusive active LOW Outputs. Each

decoder has an active LOW Enable input which can be used as a data input

for a 4-output demultiplexer. Each half of the LS139 can be used as a function

generator providing all four minterms of two variables. The LS139 is

fabricated with the Schottky barrier diode process for high speed and is

completely compatible with all Motorola TTL families.

DUAL 1-OF-4 DECODER/

DEMULTIPLEXER

LOW POWER SCHOTTKY

• Schottky Process for High Speed

• Multifunction Capability

• Two Completely Independent 1-of-4 Decoders

• Active Low Mutually Exclusive Outputs

• Input Clamp Diodes Limit High Speed Termination Effects

• ESD > 3500 Volts

J SUFFIX

CERAMIC

CASE 620-09

CONNECTION DIAGRAM DIP (TOP VIEW)

N SUFFIX

PLASTIC

CASE 648-08

NOTE:

The Flatpak version

has the same pinouts

(Connection Diagram) as

the Dual In-Line Package.

D SUFFIX

SOIC

CASE 751B-03

PIN NAMES

LOADING (Note a)

HIGH

LOW

ORDERING INFORMATION

A , A

Address Inputs

Enable (Active LOW) Input

Active LOW Outputs (Note b)

0.5 U.L.

10 U.L.

0.25 U.L.

5 (2.5) U.L.

SN54LSXXXJ Ceramic

SN74LSXXXN Plastic

SN74LSXXXD SOIC

O –O

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 SYMBOL

LOGIC DIAGRAM

DECODER a

DECODER b

FAST AND LS TTL DATA

5-235

12 3 4 5

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