SN74AHC138D

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC138D is a 3-line to 8-line decoder and demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. The device utilizes a 16-pin SOIC package and features standard input conditioning. It belongs to the AHC logic series, providing high-speed CMOS performance with low power consumption.

Signal Switches, Multiplexers, Decoders Feature Summary

• Converts three binary address inputs into one of eight mutually exclusive active-low outputs
• Includes three enable inputs for flexible system control and power management
• Supports wide supply voltage operation compatible with various digital logic families

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in embedded systems
• Demultiplexing data streams in communication interfaces
• Memory chip select generation in computer architectures

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'D' corresponds to the 16-SOIC package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the component meets the required industrial temperature specifications for your application environment before finalizing procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 3-to-8 decoding function is required with AHC speed characteristics. Consider the SOIC package constraints for PCB layout. Verify that the input voltage levels are compatible with the driving logic family to ensure proper signal integrity across the specified operating temperature range.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74AHC138 family of decoders and demultiplexers. It shares functional compatibility with other variants in the series but differs in packaging and specific electrical characteristics defined by the datasheet. The 'D' suffix specifically denotes the surface-mount SOIC package configuration.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHCT138D offers similar functionality with TTL-compatible input thresholds. SN74AHC138PWR provides equivalent logic in a TSSOP package. Verify pinout compatibility and electrical parameters before substituting.