SN74LVC126AWBQARQ1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC126AWBQARQ1 is an automotive-grade quadruple bus buffer gate with 3-state outputs, manufactured by Texas Instruments. It operates from a supply voltage of 1.65V to 3.6V and features inputs that accept voltages up to 5.5V. The device provides a maximum propagation delay of 4.7ns at 3.3V and includes ESD protection exceeding JESD 22 standards. It is housed in a 14-pin WQFN (BQA) package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Qualified for automotive applications
• Inputs accept voltages up to 5.5V
• Latch-up performance exceeds 250mA per JESD 17

Buffers, Drivers, Receivers, Transceivers Applications

• Automotive electronic systems
• Mixed 3.3V/5V system environments
• Bus-oriented transmissions

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific BQA package configuration and Q1 automotive qualification status when sourcing. Confirm RoHS compliance and lead finish details against the latest Package Option Addendum. Ensure design implementation accounts for the exposed thermal pad connection requirements specified in the datasheet.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring low-voltage operation between 1.65V and 3.6V with high-speed buffering capabilities. The 5.5V input tolerance allows direct interfacing with 5V logic without level shifters. Consider the WQFN package for compact board layouts requiring efficient thermal dissipation through the exposed pad.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC126A-Q1 family of automotive quadruple bus buffer gates. It shares functional characteristics with other variants in the series but is distinguished by its specific WQFN packaging and automotive qualification suffix. It serves as a non-inverting buffer with independent output enables for each channel.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC126AQDRQ1

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused inputs?

All unused inputs must be connected to either VCC or GND to prevent undefined operational states caused by floating voltages.

What is the recommended bypass capacitor value?

A 0.1 µF capacitor is recommended for single-supply devices, while 0.01 µF or 0.022 µF is suggested for multiple VCC pins.