SN74HCT02 Quad 2-Input NOR Gate IC
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Prices updated: 14 Oct 2026
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About this product
A CMOS logic IC containing four independent 2-input NOR gates, with HCT inputs compatible with TTL logic levels. It is used in digital logic designs, control logic and learning projects where basic gating of signals is needed.
Specifications
- Logic function
- Quad 2-input NOR, Y = NOT(A OR B)
- Number of gates
- 4
- Logic family
- HCT (CMOS, TTL-compatible inputs)
- Supply voltage
- 4.5 V to 5.5 V
- Operating temperature (commercial)
- 0 °C to 70 °C
- Package
- 14-pin
Frequently asked questions
What should I do with unused inputs?
Tie unused inputs to VCC or GND. Leaving them floating can cause unstable outputs and extra current draw.
What supply voltage does it need?
The HCT family operates from 4.5 V to 5.5 V, so use a standard 5 V supply. Do not exceed the supply limits listed in the datasheet.
