74LVC2G125DC-Q100H

Overview

The Nexperia 74LVC2G125DC-Q100H is a dual bus buffer and line driver featuring three-state outputs controlled by active-low enable inputs (nOE). It operates within a supply voltage range of 1.65 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device incorporates Schmitt-trigger inputs for noise immunity and IOFF circuitry to prevent backflow current during partial power-down states. Packaged in an 8-lead VSSOP (SOT765-1) plastic very thin shrink small outline package, it complies with AEC-Q100 Grade 1 standards.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• IOFF circuitry enables safe partial power-down mode operation
• Schmitt-trigger inputs provide tolerance for slow signal transitions
• Overvoltage tolerant inputs allow direct interfacing with 5 V logic

Applications

• Mixed 3.3 V and 5 V logic level translation environments
• Automotive electronic systems requiring Grade 1 component qualification
• Partial power-down applications utilizing IOFF functionality
• Bus buffering and line driving with high noise immunity requirements

Procurement Notes

Verify the specific suffix DC corresponds to the VSSOP8 (SOT765-1) package configuration required for your design. Confirm that the Q100H designation aligns with your automotive quality and traceability specifications. Ensure compatibility with the specified operating temperature range of -40 °C to +125 °C for your intended application environment before finalizing procurement.

Selection Notes

Select this component when a dual buffer with three-state control is needed for mixed-voltage interfaces. The inclusion of Schmitt triggers makes it suitable for noisy environments or signals with slow rise times. The IOFF feature is critical if the system requires preventing back-powering of powered-down sections. Verify that the VSSOP8 package dimensions fit your PCB layout constraints compared to alternative TSSOP packages.

Part Context

This part belongs to the Nexperia 74LVC2G125-Q100 family of dual bus buffers. The 'DC' suffix specifically identifies the VSSOP8 package variant, distinguishing it from the TSSOP8 version designated as 'DP'. Both variants share identical electrical characteristics and functional descriptions but differ in physical footprint and thermal dissipation properties.

Replacement Considerations

Direct substitutes include other 74LVC2G125 variants from different manufacturers that match the VSSOP8 package and AEC-Q100 Grade 1 qualification. Ensure any replacement maintains the same pinout configuration and IOFF functionality to guarantee circuit compatibility without redesign.

FAQ

How does the IOFF circuitry function in this device?

The IOFF circuitry automatically disables the outputs when the device is powered down (VCC = 0 V), preventing potentially damaging backflow current through the device when it is connected to live input lines.

What is the significance of the Schmitt-trigger inputs?

The Schmitt-trigger action at all inputs ensures the circuit remains tolerant of slower input rise and fall times, providing improved noise immunity compared to standard logic gates.