Introduction
The 74LS138 is a 3-to-8 line decoder/demultiplexer IC. It decodes a 3-bit binary input into one of eight outputs. It is commonly used for routing or selecting multiple lines based on a 3-bit address.
Features
- 3-bit binary input
- 8-line output
- Active low output
- TTL compatible
- Low power dissipation
Pin Configuration
The 74LS138 has 16 pins with the following configuration:
Inputs: A, B, C (Address lines)
Outputs: Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7
Power: Vcc (Pin 16), GND (Pin 8)
Applications
- Signal routing
- Memory addressing
- Multiplexing
- Data routing in communication systems