7402 IC Quad 2 Input Positive NOR Gate 74HC02 74LS02

74xx02 IC has 4 (quad) 2 input NOR logic gates. NOR gates have the opposite output of what a OR gate would. If any of the inputs are high, then the output will be low. All inputs have to be low for the output to be high.

7402 74HC02 quad 2 input NOR gate integrated circuit with output LEDs schematic diagram by electronzap
7402 74HC02 quad 2 input NOR gate integrated circuit with output LEDs schematic diagram by electronzap

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I added 2 possible ways to set the voltage at the inputs in my example circuit. And I added LEDs to the output to be able to see a high output (red LED lights up) or a low output (blue LED lights up).

Always consult the datasheet and do your own testing of components. They can be found by doing a google search of the part number and the word “datasheet”.

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