74LVC126ADR2G

Overview

The onsemi 74LVC126ADR2G is a quad bus buffer and line driver featuring three-state outputs, designed for automotive applications under the AEC-Q100 qualification standard. It operates within a supply voltage range of 1.65V to 3.6V and supports input voltages up to 5.5V, enabling level translation between 3.3V and 5V systems. The device utilizes advanced CMOS technology to achieve low power consumption while maintaining high-speed performance with typical propagation delays of 3.3ns at 3.3V. It includes an integrated off-power protection circuit to prevent reverse current flow during partial power-down scenarios.

Feature Summary

• Automotive-grade reliability certified to AEC-Q100 standards for extended temperature operation
• Three-state outputs controlled by independent output enable inputs for bus management
• Integrated off-power circuit prevents backflow current when VCC is disconnected
• Compatible with 5V tolerant inputs allowing direct interfacing with mixed-voltage logic

Applications

• Automotive infotainment and body control modules
• Industrial communication buses requiring signal buffering
• Consumer electronics utilizing mixed 3.3V and 5V logic domains

Procurement Notes

Verify the specific suffix 'R2G' corresponds to the required tape and reel packaging configuration for automated assembly. Confirm that the AEC-Q100 grade meets the specific reliability requirements of your target automotive application. Ensure the SOIC-14 package dimensions align with your PCB footprint constraints. Check for any RoHS or REACH compliance documentation relevant to your manufacturing region.

Selection Notes

Select this component when a quad buffer with automotive qualification is required for 3.3V logic systems. It is suitable for designs needing 5V tolerance on inputs without external level shifters. Consider the SOIC-14 package for through-hole or surface-mount flexibility. Evaluate the 3.3ns propagation delay against system timing budgets to ensure signal integrity is maintained across the bus lines.

Part Context

This part belongs to the 74LVC126A family of quad bus buffers from onsemi. It shares functional compatibility with industry-standard 74LVC126 devices but offers enhanced automotive qualification. The device serves as a critical interface element in digital systems, providing isolation and drive capability for data lines connecting microcontrollers to peripheral devices.

Replacement Considerations

Direct pin-compatible substitutes include the SN74LVC126AQDRG4Q1 from Texas Instruments and the MC74LVC126ADTR2G from NXP Semiconductors. Verify that alternative sources maintain the same AEC-Q100 automotive grade if required for your specific application environment.