7402 Quad 2 Input NOR Gate Logic IC

The 7402 Quad 2-Input NOR Gate Logic IC is a versatile digital logic component featuring four independent 2-input NOR gates in a single 14-pin dual in-line package (DIP). It supports multiple families of logic including TTL and CMOS, with available variants such as SN74LS02N, SN74LS02, SN74HC02, and 74HC02. This IC is widely used in digital electronics where the NOR logic function is required, such as control circuits, logic analysis, timing modules, and basic combinational logic designs.

The LS-series (Low Power Schottky) variants like SN74LS02N and SN74LS02 offer fast switching speeds with moderate power consumption, making them suitable for general TTL-based designs. Meanwhile, the HC-series (High-Speed CMOS), including SN74HC02 and 74HC02, provides compatibility with CMOS logic and allows operation at lower power and wider voltage ranges.

With standard pin layouts and TTL/CMOS logic compatibility, the 7402 series ICs are excellent for breadboard prototyping, circuit development, and integration into embedded systems. Whether you’re working on academic projects or industrial solutions, the 7402 and its variants ensure reliable performance. Shop at eleberric.com for original and quality-tested NOR gate ICs in Sri Lanka.

Specification

• IC Type: Quad 2-Input NOR Gate

• Logic Families: TTL (LS), CMOS (HC)

• Available Variants: SN74LS02N, SN74LS02, SN74HC02, 74HC02

• Number of Gates: 4

• Inputs per Gate: 2

• Voltage Range:

  • LS series: 4.75V – 5.25V

  • HC series: 2V – 6V

• Logic Compatibility: TTL and CMOS

• Package Type: DIP-14

• Propagation Delay (typical):

  • LS series: ~22 ns

  • HC series: ~8 ns

• Power Consumption:

  • LS series: Low

  • HC series: Ultra low

• Operating Temperature: 0°C to +70°C

• Dimensions: Approx. 19.3mm × 6.3mm × 3.3mm

• Weight: ~1.2g

Key Features

• Four 2-input NOR gates per IC

• Available in TTL (SN74LS02N/SN74LS02) and CMOS (SN74HC02/74HC02) variants

• Compatible with 5V logic systems

• DIP-14 package for easy prototyping

• Fast switching performance

• Low to ultra-low power consumption depending on variant

• Fully compatible with standard logic families

• Suitable for both educational and commercial use

Applications

• Digital logic gates in embedded systems

• Microcontroller input/output logic processing

• Pulse generation and timing control

• Academic electronic learning boards

• Digital signal testing and simulation

• Industrial automation logic designs