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SN74LS138 Datasheet(PDF) 2 Page - ON Semiconductor

Part # SN74LS138
Description  1-of-8 Decoder/ Demultiplexer
PDF  8 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

SN74LS138 Datasheet(HTML) 2 Page - ON Semiconductor

  SN74LS138 Datasheet HTML 1Page - ON Semiconductor SN74LS138 Datasheet HTML 2Page - ON Semiconductor SN74LS138 Datasheet HTML 3Page - ON Semiconductor SN74LS138 Datasheet HTML 4Page - ON Semiconductor SN74LS138 Datasheet HTML 5Page - ON Semiconductor SN74LS138 Datasheet HTML 6Page - ON Semiconductor SN74LS138 Datasheet HTML 7Page - ON Semiconductor SN74LS138 Datasheet HTML 8Page - ON Semiconductor  
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SN74LS138
http://onsemi.com
2
CONNECTION DIAGRAM DIP (TOP VIEW)
Address Inputs
Enable (Active LOW) Inputs
Enable (Active HIGH) Input
Active LOW Outputs
A0 - A2
E1, E2
E3
O0 - O7
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
0.25 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 InLine Package.
14
13
12
11
10
9
123
45
6
7
16
15
8
VCC O0
GND
O1
O2
O3
O4
O5
O6
A0
E1
E2
E3
O7
A1
A2
LOGIC SYMBOL
VCC = PIN 16
GND = PIN 8
15 14 13 12 11 10 9
12 3
4 5 6
12 3
A0 A1 A2
E
O0 O1 O2 O3 O4 O5 O6 O7
7
LOGIC DIAGRAM
A2
A1
A0
E1 E2 E3
O7
O6
O5
O4
O3
O2
O1
O0
VCC = PIN 16
GND = PIN 8
= Pin Numbers
3
2
1
4
5
6
7
9
15
14
13
12
11
10



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