74ABT125PW/AUJ

Buffers, Drivers, Receivers, Transceivers Overview

The NXP USA Inc. 74ABT125PW/AUJ 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 4.5 V to 5.5 V and supports an operating temperature from -40 °C to +85 °C. The device provides high-speed BiCMOS performance with an output capability of HIGH -32 mA and LOW +64 mA. Propagation delays are specified up to 4.9 ns for HIGH-to-LOW transitions at 5.0 V. It includes IOFF circuitry for partial power-down applications, preventing backflow current when powered down.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features dedicated IOFF circuitry that disables outputs to prevent potentially damaging backflow current during partial power-down conditions.
• Supports live insertion and extraction on bus lines while maintaining high-speed BiCMOS performance and direct interface with TTL levels.
• Provides robust ESD protection exceeding 2000 V per Human Body Model and 1000 V per Charged Device Model standards.

Buffers, Drivers, Receivers, Transceivers Applications

• Quad bus interface systems requiring non-inverting buffering
• Partial power-down applications utilizing IOFF functionality
• Live insertion and extraction scenarios on data buses

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'AUJ' against official Nexperia documentation, as standard datasheets list 'PW' for TSSOP14 packages. Confirm availability status directly with the manufacturer or authorized distributors, as component lifecycles change frequently. Ensure the ordering code matches the required package type and temperature range specifications before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring quad buffering with independent control over each output's state. The ABT logic family offers superior speed compared to standard 74LS series devices. Consider the TSSOP14 package dimensions if space constraints exist. Verify input voltage compatibility with the driving source to ensure proper logic level translation across the full operating temperature range.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ABT logic family, which utilizes BiCMOS technology to combine low static power dissipation with high-speed operation. The 74ABT125 specifically functions as a quad buffer with 3-state outputs. It is designed to drive bus lines efficiently while providing isolation between different sections of a digital circuit through its high-impedance OFF-state capability.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Nexperia 74ABT125D (SO14 package) serves as a functional equivalent with identical logic but a different physical footprint. Other manufacturers producing 74ABT125 compatible parts may offer pin-compatible alternatives, though electrical characteristics should be verified against the original datasheet requirements.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the IOFF circuitry function in this device?

The IOFF circuitry disables the outputs when the device is powered down, preventing potentially damaging backflow current through the device even if external voltages are present on the I/O pins.

What is the behavior of the outputs when nOE is HIGH?

When any output enable input (nOE) is HIGH, the corresponding output assumes a high impedance OFF-state, effectively disconnecting the output from the bus regardless of the input state.