74FST3125FQ

Overview

The IDT 74FST3125FQ is a high-speed CMOS quadruple bus switch featuring individual active-low enables. It provides four bidirectional switches connecting inputs to outputs without propagation delay or additional ground bounce noise. The device operates within an industrial temperature range of -40 °C to +85 °C and utilizes a 16-pin QSOP package.

Feature Summary

• Enhanced N-channel FET architecture eliminates inherent diodes to Vcc
• Zero propagation delay and zero ground bounce during switching operations
• Undershoot clamp diodes integrated on all switch and control inputs

Applications

• Hot-swapping and hot-docking signal routing
• Voltage translation between 5V and 3.3V domains
• Bus isolation for mass storage and workstations

Procurement Notes

Verify the specific suffix 'FQ' against official manufacturer documentation to confirm pinout compatibility and package dimensions. Ensure the component meets required environmental specifications for the intended operating temperature range before integration into final designs.

Selection Notes

Select this component when low-noise, high-speed signal switching is required without adding propagation delay. It serves as a direct replacement for standard logic buffers in applications demanding minimal power consumption and effective ground bounce suppression.

Part Context

This part belongs to the QuickSwitch family of high-speed CMOS devices designed for efficient signal routing. It offers enhanced performance over traditional logic gates by providing true bidirectional switching capabilities with minimal electrical interference.

Replacement Considerations

Pin-compatible substitutes include the 74'125 function equivalents. Verify functional compatibility with other manufacturers offering similar quad bus switch architectures.