74HCT2G125DP-Q100H

Overview

The Nexperia 74HCT2G125DP-Q100H is a dual buffer and line driver featuring three-state outputs, qualified to AEC-Q100 Grade 1 standards for automotive use. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device utilizes TTL input levels and provides high noise immunity with low power dissipation characteristics. Packaged in an 8-lead TSSOP (SOT505-2) format, it includes clamp diodes on inputs to facilitate interfacing with voltages exceeding VCC.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 specifications
• Three-state outputs controlled by active LOW enable inputs
• TTL-compatible input switching levels for direct logic interfacing
• High ESD protection capability against Human Body Model and Charged Device Model events

Applications

• Automotive electronic systems requiring robust signal buffering
• Bus-oriented transmissions utilizing three-state logic control
• Clock distribution circuits demanding high noise immunity
• Data acquisition systems operating across extended industrial temperatures

Procurement Notes

Verify the specific suffix 'Q100H' confirms AEC-Q100 Grade 1 automotive qualification and tape-and-reel packaging configuration. Ensure compatibility with the SOT505-2 TSSOP8 footprint during PCB layout. Confirm that the TTL input threshold requirements align with the driving source voltage levels before finalizing procurement orders.

Selection Notes

Select this component when TTL-level interface compatibility is required alongside automotive reliability standards. The HCT variant ensures proper logic level translation compared to HC series devices. Verify that the package thermal performance meets system dissipation limits under maximum load conditions and ambient temperature extremes.

Part Context

This part belongs to the Nexperia 74HCT2G125-Q100 family of dual buffers. It shares functional similarities with other automotive-grade logic drivers but is distinct due to its specific HCT input thresholds and TSSOP8 physical dimensions. It serves as a specialized solution for automotive bus architectures requiring precise timing and noise resilience.

Replacement Considerations

Direct substitutes include the 74HC2G125DP-Q100H, though input voltage thresholds differ significantly between HC and HCT logic families. Non-automotive equivalents like the standard 74HCT2G125DP lack the required Q100 qualification. Verify pinout and electrical parameters match exactly before substitution.