1Y

1A

1B

2Y

2A

2B

GND

1

2

3

4

5

6

7

14

13

12

11

10

9

8

4Y

4B

4A

3Y

3B

3A

Copyright © 2016, Texas Instruments Incorporated

8

SN54HC02, SN74HC02

SCLS076F – DECEMBER 1982 – REVISED APRIL 2015

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Copyright © 1982–2015, Texas Instruments Incorporated

8 Detailed Description

8.1 Overview

The SNx4HC02 devices are quad 2-input NOR gates. These devices are members of the High-Speed CMOS

(HC) logic family. The HC family of logic is optimized to operate with a 5-V supply, is low noise without

characteristic overshoot and undershoot, has low power consumption, small propagation delay, balanced

propagation delay and transition times, and operates over a wide temperature range.

8.2 Functional Block Diagram

8.3 Feature Description

8.3.1 Operating Voltage Range

The SNx4HC series of devices offer a wide operating voltage range from 2 V to 6 V.

8.3.2 LSTTL Loads

The outputs of the SNx4HC series can drive up to 10 LSTTL loads.

8.3.3 Low Power Consumption

The SNx4HC02 offers low power consumption of 20

μA maximum.

8.3.4 Output Drive Capability

At 5 V, the outputs have ±4 mA of output drive capability.

8.3.5 Low Input Current Leakage

Inputs have low input current leakage of 1

μA maximum.

8.4 Device Functional Modes

Table 1 lists the functional modes of the SNx4HC02.

Table 1. Function Table

INPUTS

OUTPUT

Y

A

B

H

X

L

X

H

L

L

L

H