74LVC125AD,118

Overview

The 74LVC125AD,118 is a quad buffer and line driver manufactured by Nexperia. It features four non-inverting buffers with three-state outputs controlled by active-low output enable inputs (nOE). The device operates within a supply voltage range of 1.2 V to 3.6 V and supports overvoltage tolerant inputs up to 5.5 V. It includes IOFF circuitry for partial power-down mode operation to prevent backflow current. The component utilizes Schmitt-trigger action at all inputs to tolerate slow rise and fall times.

Feature Summary

• Provides four independent non-inverting buffers with three-state outputs controlled by active-low nOE inputs
• Features IOFF circuitry that disables outputs during partial power-down to prevent potentially damaging backflow current
• Incorporates Schmitt-trigger action at all inputs to ensure tolerance for slower input signal transitions

Applications

• Signal buffering and line driving in mixed 3.3 V and 5 V environments
• Partial power-down applications requiring protection against backflow current
• Interfaces utilizing TTL levels or CMOS logic levels

Procurement Notes

Verify the specific package type SOT108-1 (SO14) matches the design requirements. Confirm the operating temperature range of -40 °C to +125 °C aligns with the application environment. Ensure the supply voltage remains within the 1.2 V to 3.6 V functional limits. Check for compliance with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36 if applicable.

Selection Notes

Select this component when a quad buffer with three-state control is required for low-voltage CMOS applications. The 5 V tolerant inputs allow direct interfacing between 3.3 V and 5 V devices without additional level shifting. Consider the SOIC-14 package dimensions and thermal dissipation characteristics for PCB layout planning.

Part Context

This part belongs to the 74LVC125A series of quad buffers/line drivers. The 'AD' suffix indicates the SO14 plastic small outline package (SOT108-1) variant. The '118' suffix typically denotes reel packaging specifications. It is part of Nexperia's extensive portfolio of low-power CMOS logic devices designed for high-speed digital applications.

Replacement Considerations

The datasheet does not list specific public confirmed substitute part numbers. Designers should verify pin compatibility and electrical parameters when considering alternative manufacturers.