IN74AC139N 데이터 시트보기 (PDF) - Integral Corp.

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IN74AC139N

Dual 1-of-4 Decoder/Demultiplexer High-Speed Silicon-Gate CMOS

Integral Corp. 

TECHNICAL DATA

Dual 1-of-4 Decoder/Demultiplexer

High-Speed Silicon-Gate CMOS

IN74AC139

The IN74AC139 is identical in pinout to the LS/ALS139,

HC/HCT139. The device inputs are compatible with standard CMOS

outputs; with pullup resistors, they are compatible with LS/ALS

outputs.

This device consists of two independent 1-of-4 decoders, each of

which decodes a two-bit Address to one-of-four active-low outputs.

Active-low Selects are provided to facilitate the demultiplexing and

cascading functions. The demultiplexing function is accomplished by

using the Address inputs to select the desired device output, and

utilizing the Select as a data input.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 µA; 0.1 µA @ 25°C

• High Noise Immunity Characteristic of CMOS Devices

• Outputs Source/Sink 24 mA

LOGIC DIAGRAM

ORDERING INFORMATION

IN74AC139N Plastic

IN74AC139D SOIC

TA = -40° to 85° C for all

packages

PIN ASSIGNMENT

PIN 16 =VCC

PIN 8 = GND

FUNCTION TABLE

Inputs

Outputs

Select A1 A0 Y0 Y1 Y2 Y3

H

X X HH H H

L

L L LH H H

L

L HHL H H

L

H L HH L H

L

H H HH H L

X = don’t care

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