CDx4HC02 Quadruple 2-Input Positive-NOR Gates

1 Features

• Buffered inputs

• Wide operating voltage range: 2 V to 6 V

• Wide operating temperature range:

–55°C to +125°C

• Supports fanout up to 10 LSTTL loads

• Significant power reduction compared to LSTTL

logic ICs

2 Applications

• Alarm / tamper detect circuit

• S-R latch

3 Description

This device contains four independent 2-input NOR

gates. Each gate performs the Boolean function

Y = A + B in positive logic.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

CD74HC02M

SOIC (14)

8.65 mm × 3.90 mm

CD74HC02E

PDIP (14)

19.30 mm × 6.40 mm

CD54HC02F

CDIP (14)

19.94 mm × 7.62 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

1A

1Y

1B

2Y

2A

2B

GND

4Y

V

CC

4B

4A

3Y

3B

3A

1

2

3

4

5

6

7

14

13

12

11

10

9

8

Device functional pinout

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CD54HC02, CD74HC02

SCHS125D – MARCH 1998 – REVISED DECEMBER 2020

Copyright © 2020 Texas Instruments Incorporated

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Product Folder Links: CD54HC02 CD74HC02

CD54HC02, CD74HC02

SCHS125D – MARCH 1998 – REVISED DECEMBER 2020

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.