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Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
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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
www.onsemi.com
•
•
•
•
•
•
I
CC
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
74AC139SC
74AC139SJ
74AC139MTC
74AC139PC
74ACT139SC
74ACT139SJ
74ACT139MTC
74ACT139PC
NOTE:
Case Number
751BG
565BF
948AH
648
751BG
565BF
948AH
648
Package Description
16−Lead Small Outline Integrated Circuit (SOIC), JEDEC MS−012, 0.150″ Narrow Body
16−Lead Small Outline Package (SOIC), EIAJ Type II, 5.3 mm Wide
16−Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO−153, 4.4 mm Wide
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Embedded System
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