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MC74AC139 Datasheet, PDF (1/12 Pages) ON Semiconductor – DUAL 1-OF-4 DECODER/DEMULTIPLEXER | |||
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MC74AC139, MC74ACT139
Dual 1-of-4
Decoder/Demultiplexer
The MC74AC139/74ACT139 is a highâspeed, dual 1âofâ4
decoder/demultiplexer. The device has two independent decoders,
each accepting two inputs and providing four mutuallyâexclusive
activeâLOW outputs. Each decoder has an activeâLOW Enable input
which can be used as a data input for a 4âoutput demultiplexer. Each
half of the MC74AC139/74ACT139 can be used as a function
generator providing four minterms of two variables.
⢠Multifunctional Capability
⢠Two Completely Independent 1âofâ4 Decoders
⢠Active LOW Mutually Exclusive Outputs
⢠Outputs Source/Sink 24 mA
⢠â²ACT139 Has TTL Compatible Inputs
VCC Eb A0b A1b O0b O1b O2b O3b
16 15 14 13 12 11 10 9
http://onsemi.com
16
1
16
1
16
1
DIPâ16
N SUFFIX
CASE 648
SOâ16
D SUFFIX
CASE 751B
TSSOPâ16
DT SUFFIX
CASE 948F
12345678
Ea A0a A1a O0a O1a O2a O3a GND
Figure 1. Pinout: 16âLead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN
FUNCTION
A0, A1
E
Address Inputs
Enable Inputs
O0âO3
Outputs
TRUTH TABLE
Inputs
Outputs
E A0 A1 O0 O1 O2
O3
HXX H H H
H
LLL
L HH
H
LHL H L H
H
LLH H H L
H
LHH H H H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
© Semiconductor Components Industries, LLC, 2002
1
July, 2002 â Rev. 6
16
1
EIAJâ16
M SUFFIX
CASE 966
ORDERING INFORMATION
Device
Package
Shipping
MC74AC139N
PDIPâ16 25 Units/Rail
MC74ACT139N
MC74AC139D
PDIPâ16
SOICâ16
25 Units/Rail
48 Units/Rail
MC74ACT139D
MC74AC139DR2
SOICâ16 48 Units/Rail
SOICâ16 2500 Tape & Reel
MC74ACT139DR2 SOICâ16 2500 Tape & Reel
MC74AC139DT TSSOPâ16 96 Units/Rail
MC74ACT139DT TSSOPâ16 96 Units/Rail
MC74AC139DTR2 TSSOPâ16 2500 Tape & Reel
MC74AC139M
EIAJâ16
50 Units/Rail
MC74ACT139M
EIAJâ16
50 Units/Rail
MC74AC139MEL EIAJâ16 2000 Tape & Reel
MC74ACT139MEL EIAJâ16 2000 Tape & Reel
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 6 of this data sheet.
Publication Order Number:
MC74AC139/D
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