Data Sheet

January, 2017 − Rev. 2

1 Publication Order Number:

74AC139/D

74AC139, 74ACT139

Dual 1-of-4 Decoder /

Demultiplexer

General Description

The AC/ACT139 is a high−speed, dual 1−of−4 decoder/demultiplexer.

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 AC/ACT139 can

be used as a function generator providing all four minterms of two

variables.

Features

• I

Reduced by 50%

• Multifunction Capability

• Two Completely Independent 1−of−4 Decoders

• Active LOW Mutually Exclusive Outputs

• Outputs Source/Sink 24 mA

• ACT139 has TTL−compatible Inputs

ORDERING CODE:

Order Number Case Number Package Description

74AC139SC 751BG 16−Lead Small Outline Integrated Circuit (SOIC), JEDEC MS−012, 0.150″ Narrow Body

74AC139SJ 565BF 16−Lead Small Outline Package (SOIC), EIAJ Type II, 5.3 mm Wide

74AC139MTC 948AH 16−Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO−153, 4.4 mm Wide

74AC139PC 648 16−Lead Plastic Dual−In−Line Package (PDIP), JEDEC MS−001, 0.300″ Wide

74ACT139SC 751BG 16−Lead Small Outline Integrated Circuit (SOIC), JEDEC MS−012, 0.150″ Narrow Body

74ACT139SJ 565BF 16−Lead Small Outline Package (SOIC), EIAJ Type II, 5.3 mm Wide

74ACT139MTC 948AH 16−Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO−153, 4.4 mm Wide

74ACT139PC 648 16−Lead Plastic Dual−In−Line Package (PDIP), JEDEC MS−001, 0.300″ Wide

NOTE: Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

CONNECTION DIAGRAM

PIN DESCRIPTIONS

Pin Names Description

, A

Address Inputs

E Enable Inputs

–O

Outputs