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HD74LS20 Datasheet, PDF (2/6 Pages) Hitachi Semiconductor – Dual 4-input Positive NAND Gates | |||
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HD74LS20
Circuit Schematic (1/2)
Inputs
A
B
C
D
VCC
8k 75
20k
4.5k
Output
Y
1.5k
3k
GND
Absolute Maximum Ratings
Item
Symbol
Ratings
Supply voltage
VCC
7
Input voltage
VIN
7
Power dissipation
PT
400
Storage temperature
Tstg
â65 to +150
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Symbol
VCC
IOH
IOL
Topr
Min
4.75
â
â
â20
Typ
5.00
â
â
25
Max
5.25
â400
8
75
Unit
V
V
mW
°C
Unit
V
µA
mA
°C
Rev.2.00, Feb.18.2005, page 2 of 5
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