SN74AHCT126QDRG4Q1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AHCT126QDRG4Q1 is an automotive-grade quad bus buffer gate with three-state outputs, manufactured by Texas Instruments. It belongs to the AHCT logic family and operates within a supply voltage range of 4.5 V to 5.5 V. The device features non-inverting polarity and provides high-level output current of -8 mA and low-level output current of 8 mA. It is housed in a 14-TSSOP package and supports surface-mount installation. The component is qualified under AEC-Q100 standards for automotive applications, ensuring reliability across a wide operating temperature range from -40°C to +125°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for enhanced reliability
• Quad configuration with independent three-state control for each channel
• Compatible with standard CMOS logic levels via AHCT technology

Buffers, Drivers, Receivers, Transceivers Applications

• Automotive data bus buffering and line driving
• High-speed signal isolation in vehicle electronic control units
• Level shifting between different voltage domains in automotive systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the complete part number including suffixes such as Q1 and G4 against official Texas Instruments documentation to ensure correct automotive grade and tape-and-reel packaging specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement to align with assembly process constraints.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing automotive circuits requiring robust signal buffering with defined drive strength and strict temperature tolerance. Ensure the system power supply remains within the specified 4.5 V to 5.5 V range to maintain logical integrity and prevent excessive power consumption or performance degradation during operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the broader SN74AHCT126 series, which includes variants with different packaging options such as TSSOP and SOIC. The specific QDRG4Q1 designation indicates the automotive grade, green material composition, and reel packaging format. It serves as a specialized solution for automotive electronics where standard commercial-grade components may not meet durability or environmental stress requirements.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include other SN74AHCT126 variants with identical pinouts and electrical characteristics but potentially different packaging or non-automotive grades. Verify functional equivalence regarding propagation delay and output current capabilities before substitution.