74FST3383Q

Overview

The IDT 74FST3383Q is a Bus FET Exchange Switch manufactured by Integrated Device Technology Inc. It features a 4 x 2:2 switching architecture housed in a 24-QSOP surface-mount package. The device operates within an extended temperature range of -40°C to 85°C. It is classified as a CMOS logic circuit designed for signal switching applications.

Feature Summary

• Provides four independent bidirectional bus exchange switches with a 2-to-2 configuration
• Utilizes Bus FET technology for low on-resistance and high-speed signal transmission
• Supports surface-mount integration via a compact 24-pin QSOP form factor

Applications

• Data bus routing and exchange in computer systems
• Signal path selection in telecommunications equipment
• Peripheral interface switching in industrial control units

Procurement Notes

Verify the specific suffix 'Q' against the manufacturer's current datasheet to confirm lead-free status and RoHS compliance, as historical data indicates variations. Ensure the 24-QSOP package dimensions match your PCB footprint requirements. Confirm the operating temperature grade aligns with your system's thermal environment specifications before finalizing procurement.

Selection Notes

Select this component when a multi-channel bidirectional bus switch is required for signal integrity. The 4x2:2 topology allows flexible routing between two distinct bus domains. Consider the QSOP package constraints for board space. Verify voltage levels and drive capabilities against the target application's electrical requirements to ensure compatibility.

Part Context

This part belongs to the 74FST series of high-speed logic devices from IDT. It functions specifically as a signal switch rather than a standard logic gate. The device is part of a broader family of bus exchange solutions designed for high-performance digital systems requiring reliable signal isolation and routing.

Replacement Considerations

Check for direct pin-compatible substitutes within the same 74FST series. Verify that any alternative maintains the 4x2:2 switching matrix and 24-QSOP package. Ensure electrical characteristics such as on-resistance and leakage current meet original specifications.