SN74LVC138AQPWRQ1

Overview

The SN74LVC138AQPWRQ1 is an automotive-grade 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 is qualified under AEC-Q100 standards for automotive applications. It supports a wide operating temperature range from -40°C to +125°C and is housed in a TSSOP-16 surface-mount package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• Low-voltage operation supporting 2 V to 3.6 V power supplies
• High-speed decoding performance with 6.7 ns propagation delay
• Wide industrial and automotive temperature range capability

Applications

• Automotive electronic control units (ECUs)
• In-vehicle infotainment systems
• Body electronics and lighting control modules
• Telematics and connectivity subsystems

Procurement Notes

Verify the specific suffix 'PWR' corresponds to the TSSOP-16 package when sourcing. Confirm AEC-Q100 qualification status is required for the target automotive application. Ensure the input voltage levels match the LVC family specifications. Check for RoHS compliance documentation if environmental regulations apply. Validate the operating temperature range against system thermal requirements.

Selection Notes

Select this component for designs requiring automotive reliability and low-power consumption. The LVC series offers compatibility with standard logic interfaces while operating at lower voltages than traditional CMOS. Consider the TSSOP-16 footprint for space-constrained PCB layouts. Evaluate the 6.7 ns delay against system timing constraints. Ensure the 3-input address configuration meets the decoding requirements of the target circuit.

Part Context

This device belongs to the SN74LVC138A-Q1 family of automotive decoders. It shares functional similarities with other LVC series parts but is specifically optimized for automotive environments. The 'Q1' suffix denotes automotive qualification, distinguishing it from commercial variants like the SN74LVC138APWR. It serves as a critical interface component for signal routing in vehicle networks.

Replacement Considerations

SN74LVC138AQDRQ1: Alternative SOIC-16 package version with identical electrical characteristics.