The 74LVX138 is a 3-to-8 line decoder/demultiplexer from Fairchild Semiconductor (now ON Semiconductor). This device accepts three binary address inputs and activates one of eight output lines based on the input code. It is designed for use in memory addressing, data routing, and other digital control applications where efficient decoding is required.

Applications

• Memory address decoding
• Data routing
• Demultiplexing
• Chip select logic
• Digital control systems

Features

• 3-to-8 Line Decoder/Demultiplexer: Decodes a 3-bit binary input into one of eight output lines.
• Low Voltage Operation: Operates at a supply voltage of 2.0V to 3.6V.
• High Speed: Offers fast propagation delays for high-performance systems.
• Low Power Consumption: Designed for minimal power dissipation.
• Three Enable Inputs: Includes three enable inputs (G1, /G2A, /G2B) for cascading and output control.
• Active-Low Outputs: The selected output is driven low, while all other outputs remain high.

Benefits

• Efficient Decoding: Simplifies address decoding and data routing tasks.
• Versatile Applications: Suitable for a wide range of digital logic applications.
• High-Speed Performance: Enables fast data processing in demanding systems.
• Reduced Power Consumption: Low voltage and low power design minimize energy usage.
• Simplified System Integration: Enable inputs allow for easy cascading and output control.

Additional Details

The 74LVX138 is available in various packages, including DIP and SOIC. The propagation delay depends on the load capacitance and supply voltage, typically ranging from a few nanoseconds to tens of nanoseconds. The device is characterized for operation from -40°C to +85°C, making it suitable for a wide range of environmental conditions. The enable inputs allow for expansion to larger decoding schemes. The active-low outputs are designed to directly drive other logic gates or LEDs.