HD74AC139 Datasheet, PDF (2/10 Pages) Hitachi Semiconductor – Dual 1-of-4 Decoder/Demultiplexer

HD74AC139/HD74ACT139
Pin Arrangement
Logic Symbol
Ea 1
A0a 2
A1a 3
O0a 4
O1a 5
O2a 6
O3a 7
GND 8
(Top view)
16 VCC
15 Eb
14 A0b
13 A1b
12 O0b
11 O1b
10 O2b
9 O3b
E A0 A1
DECODER a
O0 O1 O2 O3
Pin Names
A₀, A₁
E
O₀ to O ₃
Address Inputs
Enable Inputs
Outputs
E A0 A1
DECODER b
O0 O1 O2 O3
2