SN74LVC138AQPWREP

Overview

The SN74LVC138AQPWREP is a MIL-enhanced 3-to-8 line decoder/demultiplexer from Texas Instruments, belonging to the LVC logic series. It features three input lines and eight active-low outputs within a TSSOP-16 package. The device operates on a supply voltage ranging from 2 V to 3.6 V with a maximum propagation delay of 6.7 ns. It supports surface mount installation and functions reliably across an extended temperature range from -55 °C to +125 °C.

Feature Summary

• MIL-enhanced reliability for demanding environments
• Three address inputs control eight distinct output lines
• Active-low decoding logic for precise signal selection

Applications

• Automotive electronic systems requiring enhanced durability
• Industrial control units operating in extreme temperatures
• Military-grade data routing and demultiplexing circuits

Procurement Notes

Verify the specific suffix 'REP' against official Texas Instruments documentation to confirm MIL-enhanced status and exact qualification standards. Ensure the TSSOP-16 package dimensions match your PCB footprint requirements. Confirm that the -55 °C to +125 °C operating range aligns with your system's thermal design specifications before finalizing procurement.

Selection Notes

Select this component when high reliability and wide temperature tolerance are critical. The LVC series offers low power consumption suitable for battery-operated or energy-efficient designs. Compare the 6.7 ns propagation delay against system timing constraints to ensure adequate speed. Verify compatibility with 2 V to 3.6 V logic levels used in your target application circuit.

Part Context

This part belongs to the SN74LVC138 family of decoders. Unlike standard commercial variants, the AQPWREP designation indicates specific manufacturing enhancements. It shares functional similarities with other 3-to-8 decoders but distinguishes itself through its qualified reliability profile and extended industrial temperature capabilities provided by the manufacturer.

Replacement Considerations

Check for SN74LVC138AQDRQ1 or SN74LVC138APWR as potential alternatives if package or automotive qualification differences are acceptable. Verify pinout compatibility and electrical parameters before substitution.