SN74HC138ANSR

Overview

The SN74HC138ANSR is a high-speed CMOS decoder/demultiplexer manufactured by Texas Instruments. It features three address inputs and eight active-low outputs, enabling the selection of one of eight output lines based on the binary input code. The device operates within a supply voltage range of 2 V to 6 V and supports surface-mount installation in an SOIC-16 package. It functions across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides decoding functionality for three binary inputs to activate one of eight distinct output lines simultaneously.

Applications

• Data routing and signal distribution in digital systems
• Address decoding for memory or peripheral selection
• Control logic implementation in embedded hardware

Procurement Notes

Verify the specific suffix 'ANSR' against the manufacturer's official documentation to confirm the exact package type, tape-and-reel specifications, and RoHS compliance status. Ensure that the component meets all environmental and electrical requirements for the intended application before procurement.

Selection Notes

Select this component when a standard 3-to-8 line decoding function is required with low power consumption and wide voltage tolerance. Consider the SOIC-16 package constraints and ensure compatibility with the system's operating temperature range and signal integrity requirements.

Part Context

This part belongs to the SN74HC138 family of decoders and demultiplexers. It is designed for general-purpose digital logic applications requiring reliable signal routing. The HC series offers fast switching speeds and compatibility with standard CMOS logic levels.

Replacement Considerations

Compatible substitutes include SN74HC138DR and SN74HC138NSRG4. Verify pinout compatibility and electrical characteristics before substitution.