74138 데이터 시트보기 (PDF) - ON Semiconductor
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74138 Datasheet PDF : 8 Pages
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SN74LS138
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC O0 O1 O2 O3 O4 O5 O6
16 15 14 13 12 11 10 9
NOTE:
The Flatpak version has the same
pinouts (Connection Diagram) as
the Dual InĆLine Package.
1 2 3 4 56 78
A0 A1 A2 E1 E2 E3 O7 GND
LOADING (Note a)
PIN NAMES
A0 - A2
E1, E2
E3
O0 - O7
Address Inputs
Enable (Active LOW) Inputs
Enable (Active HIGH) Input
Active LOW Outputs
HIGH
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
LOW
0.25 U.L.
0.25 U.L.
0.25 U.L.
5 U.L.
NOTES:
ąa) 1 TTL Unit Load (U.L.) = 40 mA HIGH/1.6 mA LOW.
LOGIC SYMBOL
123
456
1 23
A0 A1 A2
E
O0 O1 O2 O3 O4 O5 O6 O7
15 14 13 12 11 10 9 7
VCC = PIN 16
GND = PIN 8
LOGIC DIAGRAM
A2 A1 A0
3
2
1
E1 E2 E3
45
6
VCC = PIN 16
GND = PIN 8
= Pin Numbers
7
9
10
11
12
13
14
15
O7 O6 O5 O4 O3 O2 O1 O0
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