74HCT125D-Q100J

Overview

The 74HCT125D-Q100J is a quad buffer and line driver with three-state outputs, manufactured by Nexperia USA Inc. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features TTL input levels and includes clamp diodes on inputs for interfacing with voltages exceeding VCC. It is qualified to AEC-Q100 Grade 1 standards for automotive applications. The component utilizes an SO14 plastic small outline package (SOT108-1) with a body width of 3.9 mm.

Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standards
• Three-state outputs controlled by active LOW enable inputs
• High noise immunity and CMOS low power dissipation characteristics
• ESD protection exceeding 2000 V via Human Body Model and 1000 V via Charged Device Model

Applications

• Automotive electronic systems requiring robust logic buffering
• Bus-oriented transmissions utilizing three-state control
• Clock distribution and buffering circuits
• Data acquisition systems operating in high-noise environments

Procurement Notes

Verify the specific ordering suffix 'J' against official Nexperia documentation to confirm tape and reel packaging specifications. Ensure that the SO14 package variant matches the required PCB footprint dimensions. Confirm compliance with RoHS directives and REACH regulations relevant to the target manufacturing region before finalizing procurement orders.

Selection Notes

Select this component when TTL-compatible input thresholds are required alongside wide temperature operation up to 125 °C. The HCT series ensures compatibility with standard TTL logic families while offering improved noise immunity compared to older technologies. Verify that the application environment meets the AEC-Q100 Grade 1 requirements for automotive reliability and longevity.

Part Context

This part belongs to the 74HCT125-Q100 family of quad buffers with three-state outputs. It shares functional similarities with other members of the 74HC/HCT series but is specifically optimized for automotive-grade reliability. The D suffix indicates the SO14 surface-mount package, distinguishing it from TSSOP or DIP variants within the same logical family.

Replacement Considerations

Consult official Nexperia cross-reference lists for verified substitutes. Potential equivalents may include other AEC-Q100 qualified quad buffers with three-state outputs from compatible manufacturers, provided pinouts and electrical characteristics align precisely.