74AC125FP-E

Buffers, Drivers, Receivers, Transceivers Overview

The Renesas HD74AC125FP-E is a high-speed CMOS quad bus switch featuring individual active-low enables. It provides four independent bidirectional switches connecting inputs to outputs without propagation delay or ground bounce noise. The device operates with a core voltage of 5V and an on-resistance of 5 ohms. It supports hot-swapping, hot-docking, and voltage translation between 5V and 3.3V levels. The component is housed in a 16-pin QSOP package and functions within a temperature range of -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides four high-speed low-resistance CMOS switches for signal and control switching
• Features enhanced N-channel FETs with no inherent diode to Vcc
• Includes undershoot clamp diodes on all switch and control inputs
• Pin-compatible with the 74'125 function

Buffers, Drivers, Receivers, Transceivers Applications

• Hot-swapping and hot-docking applications
• Voltage translation between 5V and 3.3V systems
• Bus isolation for mass storage and workstations
• Clock gating and logic replacement in data processing

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'E' against official Renesas documentation to confirm environmental compliance or tape-and-reel packaging status, as standard datasheets may list generic variants. Ensure the 16-pin QSOP package matches the design footprint. Confirm that the 5V core voltage requirement aligns with the target system power rails before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when low-noise signal switching is critical, as it generates no additional ground bounce. It serves as a direct upward-compatible replacement for the HD74HC series with improved speed. Use this part for analog switching tasks like video signals where minimal capacitance reduction and isolation are required. Ensure the 5V operating voltage is compatible with the host system.

Buffers, Drivers, Receivers, Transceivers Part Context

This component belongs to the HD74AC series of high-speed CMOS logic devices from Renesas. The AC series offers more than double the high-speed operation compared to the HD74HC series. It is designed for applications requiring fast switching speeds with low power consumption, serving as a bridge between older HC logic standards and modern high-performance requirements.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The datasheet indicates pin compatibility with the 74'125 function. Verify if the legacy 74AC125 or equivalent parts from other manufacturers meet the specific 5V core voltage and 5-ohm on-resistance specifications required for the application.