74LS02 is a TTL logic IC consisting of four NOR gates, used to perform logic operations in digital logic circuits. NOR gate is a universal gate, meaning you can construct any other logic function (AND, OR, NOT, NAND, XOR, etc.) using only NOR gates.
Part Number: SN74LS02, DM74LS02
Function: Quad 2-Input Positive NOR Gates.
Package: DIP 14 Pin Type
Manufacturer: Fairchild, Hitachi Semiconductor, Texas Instruments
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Description
The 74LS02 has four independent Negative-OR (NOR) gates, each with two inputs and one output. A NOR gate outputs “0” if either input is “1”, and outputs “1” only if both inputs are “0”.
Since this IC belongs to the TTL logic family, it requires a 5V power supply. Additionally, input and output operate at the TTL logic level and are TTL compatible.
Pinout and Truth table
Applications
1. Logic circuit design, decoders, multiplexers
2. Signal processing, control circuits
3. Basic Logic Circuits
4. Universal Gate Usage
5. Combinational Logic
6. Control Circuits
7. Oscillators and Pulse Generators
74LS02 PDF File
SN74LS02 PDF File