TECHNICAL DATA

1

INTEGRAL

Triple 3-Input NOR Gate

The IN74HCT27A is high-speed Si-gate CMOS device and is pin

compatible with low power Schottky TTL (LSTTL). The device provide

the Triple 3-input NOR function.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 V

• Low Input Current: 1.0 µA

• High Noise Immunity Characteristic of CMOS Devices

LOGIC DIAGRAM

PIN ASSIGNMENT

IN74HCT27A

ORDERING INFORMATION

IN74HCT27AN

Plastic

IN74HCT27AD

SOIC

IZ74HCT27A

Chip

° to 125° C for all packages

PIN 7 = GND

FUNCTION TABLE

Inputs

Output

A

B

C

C

B

A

Y

+

+

=

L

L

L

H

X

X

H

L

X

H

X

L

H

X

X

L

X = don’t care

1

2

3

5

4

6

7

V CC

14

13

12

11

10

8

9

GND

A1

B1

B2

B3

A2

A3

Y2

Y3

Y1

C1

C2

C3

A1

A2

A3

C1

C2

C3

Y1

Y2

Y3

B1

B2

B3