74HCT125PW-Q100J

Overview

The Nexperia 74HCT125PW-Q100J is a quad buffer and line driver featuring three-state outputs controlled by active-low output enable inputs. It operates within a supply voltage range of 4.5 V to 5.5 V, utilizing TTL input levels for compatibility with standard logic families. The device is qualified to AEC-Q100 Grade 1 standards, ensuring reliability in automotive environments across an extended temperature range from -40 °C to +125 °C. Packaged in a 14-lead TSSOP (SOT402-1) format, it provides high noise immunity and low power dissipation suitable for demanding applications.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• Three-state outputs controlled by dedicated active-low enable inputs
• TTL-compatible input levels for direct interfacing with standard logic

Applications

• Automotive electronic systems requiring robust signal buffering
• High-noise industrial environments needing high noise immunity
• Mixed-voltage logic interfaces utilizing TTL-level signaling

Procurement Notes

Verify current manufacturing status directly with the supplier, as availability may fluctuate. Confirm that the specific TSSOP-14 package variant matches your PCB footprint requirements. Ensure design compliance with the specified operating temperature range and supply voltage limits to maintain AEC-Q100 certification validity.

Selection Notes

Select this component when TTL-level input compatibility is required alongside three-state bus driving capabilities. It is appropriate for designs necessitating AEC-Q100 Grade 1 qualification for automotive deployment. Consider the TSSOP-14 package dimensions and thermal characteristics during layout planning to ensure proper heat dissipation within the specified operating temperature range.

Part Context

This part belongs to the Nexperia 74HCT125-Q100 series, which includes variants like the 74HC125-Q100. While the HC version supports CMOS levels and wider voltage ranges, the HCT variant specifically targets TTL-level inputs. All series members share the same core functionality and automotive qualification but differ in electrical interface specifications.

Replacement Considerations

The 74HCT125D-Q100 serves as a pin-compatible alternative using an SOIC-14 package instead of TSSOP. Verify package dimensions and lead pitch differences before substitution to ensure mechanical fit on the target printed circuit board.

FAQ

What is the function of the nOE pins?

The nOE pins are active-low output enable inputs. When driven LOW, the buffers are enabled; when HIGH, the outputs enter a high-impedance OFF-state.

Does this device support overvoltage tolerant inputs?

Yes, the inputs include clamp diodes, allowing the use of current-limiting resistors to interface with voltages exceeding VCC.