The IC 74138 - Decoder (SN74HC138N) is a 3-to-8 line decoder/demultiplexer used to convert binary input signals into a one-of-eight output. It features 3 binary select inputs (A, B, C) and 8 active-low outputs (Y0–Y7), along with 3 enable inputs for greater control and flexibility.
Designed with high-speed CMOS technology, the SN74HC138N offers fast response times, low power consumption, and compatibility with TTL logic levels. When enabled, only one of the eight outputs will be driven low based on the binary value of the inputs, making it perfect for applications like address decoding, data routing, and memory selection.
Key Features:
- 3-to-8 line decoding with active-low outputs
- Multiple enable inputs for cascading and control
- High-speed CMOS (HC) with TTL compatibility
- DIP-16 package for ease of use in prototyping
- Wide supply voltage range and low power dissipation
Applications:
- Address decoding in microprocessor systems
- Memory chip selection
- Data demultiplexing
- Logic function decoding
