TECHNICAL DATA
IN74HC27A
Triple 3-Input NOR Gate
The IN74HC27A is high-speed Si-gate CMOS device and are pin
compatible with low power Schottky TTL (LSTTL) . The device provide
Triple 3-input NOR function.
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Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0 µA
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
IN74HC27AN
IN74HC27AD
Plastic
SOIC
TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
A1
V
A1
B1
A2
B2
C2
1
2
3
4
5
6
7
14
13
12
11
10
9
CC
Y1
Y2
Y3
B1
C1
C1
Y1
C3
B3
A3
Y3
A2
B2
Y2
GND
8
C2
A3
B3
FUNCTION TABLE
Inputs
Output
C3
A
L
B
L
C
L
Y = A + B + C
H
L
L
L
X
X
H
X
H
X
H
X
X
PIN 14 =VCC
PIN 7 = GND
X = don’t care
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
