The HD74HCT138RPEL is a high-speed CMOS 3-to-8 line decoder/demultiplexer manufactured by Hitachi. It is designed to decode three binary address inputs to activate one of eight outputs. The device features high noise immunity and low power consumption.

Applications

• Memory address decoding
• Data routing
• Chip selection
• Logic circuit multiplexing
• Instrumentation and control systems

Features

• 3-to-8 Line Decoding/Demultiplexing
• High-Speed CMOS Logic
• Low Power Consumption
• High Noise Immunity
• Enable Inputs for Expansion
• Available in DIP and SOP Packages

Benefits

• Simplifies complex decoding tasks in digital systems.
• Reduces power consumption in battery-powered applications.
• Provides reliable operation in noisy environments.
• Allows for easy expansion of the decoding capability.
• Facilitates easy integration with other logic components.

Additional Details

The HD74HCT138RPEL is typically supplied in a standard SOIC (Small Outline Integrated Circuit) package. The device operates with a supply voltage of 4.5V to 5.5V. It offers a propagation delay of approximately 15 ns. The enable inputs allow for easy cascading of multiple decoders to create larger decoding arrays. It's commonly used in microprocessor-based systems to select one of multiple memory devices or peripherals.