HD74LS27 Datasheet, PDF (2/5 Pages) Hitachi Semiconductor – Triple 3-input Positive NOR Gates

HD74LS27
Circuit Schematic (1/3)
Inputs
A
B
C
20k
8k
V_CC
75
20k
20k
4.5k
Output
Y
1.5k 3k
GND
Absolute Maximum Ratings
Item
Symbol
Ratings
Supply voltage
V_CC
7
Input voltage
V_IN
7
Power dissipation
P_T
400
Storage temperature
Tstg
–65 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
V_CC
I_OH
I_OL
Topr
Min
4.75
—
—
–20
Typ
5.00
—
—
25
Max
5.25
–400
8
75
Unit
V
V
mW
°C
Unit
V
µA
mA
°C
Rev.2.00, Feb.18.2005, page 2 of 4