74LVC125ADB,112

Overview

The 74LVC125ADB,112 is a quad buffer and line driver featuring 3-state outputs controlled by active-low output enable inputs (nOE). It operates within a supply voltage range of 1.2 V to 3.6 V and supports overvoltage tolerant inputs up to 5.5 V. The device includes IOFF circuitry for partial power-down applications to prevent backflow current. It utilizes Schmitt-trigger inputs to tolerate slow rise and fall times and complies with JEDEC standards for various voltage levels.

Feature Summary

• Provides four non-inverting buffers with 3-state outputs controlled by dedicated enable pins
• Features IOFF circuitry that disables outputs during power-down to prevent damaging backflow currents
• Includes Schmitt-trigger action at all inputs to ensure tolerance for slower input signal transitions
• Supports direct interface with TTL levels while maintaining CMOS low power consumption

Applications

• Mixed 3.3 V and 5 V environments requiring level translation
• Partial power-down applications utilizing IOFF functionality
• Bus-oriented communications systems
• Clock distribution and buffering circuits

Procurement Notes

Verify the specific ordering suffix '112' corresponds to the SO14 plastic small outline package (SOT108-1) as defined in the official Nexperia documentation. Confirm the manufacturer designation aligns with Nexperia product data sheets, as NXP USA Inc. may reference legacy branding. Ensure the component meets the specified temperature range of -40 °C to +125 °C for your intended operating environment.

Selection Notes

Select this component when a quad buffer with 3-state control is required for mixed-voltage logic interfaces. The wide supply voltage range from 1.2 V to 3.6 V allows flexibility in low-power designs. The inclusion of IOFF circuitry makes it suitable for systems requiring safe power-down states without external protection components.

Part Context

This part belongs to the 74LVC125A family of quad bus drivers manufactured by Nexperia. The 'AD' suffix indicates the SO14 package variant, while '112' denotes the specific tape and reel or tube packaging configuration. It is part of the broader LVC logic series designed for low-voltage CMOS applications.

Replacement Considerations

Direct substitutes include other 74LVC125 variants such as the 74LVC125APW (TSSOP14) or 74LVC125ABQ (DHVQFN14), provided the package footprint is compatible. Verify pinout compatibility and electrical specifications against the original datasheet before substitution.