SN74HC138QDRG4Q1

Overview

The SN74HC138QDRG4Q1 is an automotive-grade, single 3-to-8 line decoder/demultiplexer manufactured by Texas Instruments. It belongs to the SN74HC138 family and utilizes a green SOIC-16 surface-mount package. The device operates within a supply voltage range of 2 V to 6 V and supports an extended industrial temperature range from -40°C to +125°C. It features three enable inputs to facilitate system expansion and minimize external logic requirements.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust performance in vehicle environments
• Three enable inputs allow flexible configuration for cascading or data routing applications
• Low power consumption characteristics suitable for energy-efficient system designs

Applications

• Automotive memory address decoding systems
• Data routing in high-speed transmission networks
• Industrial control logic expansion

Procurement Notes

Verify the specific suffix G4 indicates lead-free manufacturing compliance. Confirm that the Q1 suffix denotes automotive grade qualification. Ensure the SOIC-16 package matches the target PCB footprint. Validate the operating temperature range against environmental specifications.

Selection Notes

Select this component when automotive reliability and wide voltage operation are required. Compare propagation delay specifications against standard HC variants if timing constraints are critical. Verify pin compatibility with existing non-automotive designs before integration.

Part Context

This part is a qualified variant within the broader SN74HC138 decoder family. It shares functional logic with commercial counterparts but meets stricter automotive durability and quality standards. The device serves as a core logic element for address decoding and signal distribution in complex electronic architectures.

Replacement Considerations

SN74HC138DRQ1 is a direct functional substitute within the same automotive series. SN74HCS138QDRQ1 offers similar functionality with potentially different electrical characteristics.