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SN74LS139 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. SN74LS139
Description  LOW POWER SCHOTTKY
Download  8 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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 2 page
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SN74LS139
http://onsemi.com
2
CONNECTION DIAGRAM DIP (TOP VIEW)
Address Inputs
Enable (Active LOW) Input
Active LOW Outputs
A0, A1
E
O0 – O3
0.5 U.L.
0.5 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
5 U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40
mA HIGH/1.6 mA LOW.
HIGH
LOW
(Note a)
LOADING
PIN NAMES
NOTE:
The Flatpak version has the same
pinouts (Connection Diagram) as
the Dual In-Line Package.
14
13
12
11
10
9
123
45
6
7
16
15
8
VCC
Eb
GND
A0b
A1b
O0b
O1b
O2b
O3b
Ea
O0a
O1a
A0a
A1a
VCC = PIN 16
GND = PIN 8
O1
12 3
15
14 13
4 5 6 7
12 11 10 9
EA0 A1
DECODER a
DECODER b
O0
O2 O3
EA0 A1
O2a
O3a
O1
O0
O2 O3
LOGIC SYMBOL




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