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MC74AC139DG Datasheet, PDF (1/11 Pages) ON Semiconductor – Dual 1−of−4 Decoder/Demultiplexer | |||
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MC74AC139, MC74ACT139
Dual 1âofâ4
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
w These devices are available in Pbâfree package(s). Specifications herein
apply to both standard and Pbâfree devices. Please see our website at
www.onsemi.com for specific Pbâfree orderable part numbers, or
contact your local ON Semiconductor sales office or representative.
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, 2006
1
March, 2006 â Rev. 7
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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