SN74LVC138AQDREP

Overview

The SN74LVC138AQDREP is a MIL-enhanced 3-to-8 line decoder/demultiplexer from Texas Instruments, part of the LVC logic family. It operates within a supply voltage range of 2 V to 3.6 V and features a propagation delay of 6.7 ns. The device supports surface-mount installation in a TSSOP-16 package. It functions across an extended industrial temperature range from -55 °C to +125 °C.

Feature Summary

• MIL-enhanced reliability for demanding environments
• Low-voltage operation compatible with modern digital systems
• High-speed decoding performance with low propagation delay

Applications

• Military-grade address decoding circuits
• Industrial control system demultiplexing
• Automotive electronics requiring extended temperature tolerance

Procurement Notes

Verify the specific suffix 'REP' indicates MIL-enhanced status against official Texas Instruments documentation. Confirm that the TSSOP-16 package matches your PCB footprint requirements. Ensure the -55 °C to +125 °C operating range aligns with your environmental specifications before finalizing procurement.

Selection Notes

Select this component when military-grade reliability is required alongside low-voltage CMOS performance. Compare against standard commercial variants if extended temperature ranges are not necessary. Verify pinout compatibility with existing designs using the LVC family architecture.

Part Context

This part belongs to the SN74LVC138A series of decoders and demultiplexers. The 'AQ' prefix typically denotes automotive or enhanced qualification, while 'REP' signifies MIL-enhanced processing. It complements other LVC logic gates like the SN74LVC00AQDREP for comprehensive digital logic solutions.

Replacement Considerations

SN74LVC138ADRE4 offers similar functionality but lacks MIL enhancement and has a lower temperature range. SN74LVC138APWR is a commercial grade alternative without the enhanced reliability features.