The 74138 IC is a high-performance 3-to-8 line decoder/demultiplexer designed for digital logic applications. It takes a 3-bit binary input and decodes it into one of eight active-low outputs, making it a key component in applications like memory addressing, data routing, and digital system design. The IC features three enable inputs (two active-low, one active-high), which allow easy cascading for larger decoder systems or selective enabling of multiple devices.
Built using TTL (Transistor-Transistor Logic) technology, the 74138 provides fast switching speeds, low power consumption, and reliable performance. It comes in a standard DIP (Dual Inline Package), making it breadboard and PCB friendly for prototyping and educational projects.
Key Features:
- 3-to-8 line decoder/demultiplexer functionality
- Active-low outputs for direct use with TTL/CMOS logic
- Three enable inputs for flexible system control and cascading
- TTL compatible with fast switching times
- Standard 16-pin DIP package
- Wide use in digital electronics and embedded systems
Applications:
- Memory address decoding
- I/O port selection
- Data routing in microprocessor systems
- Digital logic design projects
- Educational electronics experiments
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