FST34X2245QSPX

Overview

The FST34X2245QSPX is an 8 x 1:1 logic bus switch providing 32 bits of high-speed CMOS TTL-compatible signal routing. It operates on a single supply voltage ranging from 4 V to 5.5 V. The device features 25-ohm series resistors integrated into its outputs to support impedance matching and signal integrity in high-speed data handling applications.

Feature Summary

• Provides 32-bit high-speed CMOS bus switching capability
• Integrates 25-ohm series resistors within output paths
• Supports standard flow-through mode for signal multiplexing

Applications

• Multiplexing and signal routing in electronic circuits
• High-speed data handling systems requiring impedance matching
• TTL-compatible interface signal switching

Procurement Notes

Verify the manufacturer designation, as this component is associated with both Fairchild Semiconductor and onsemi due to corporate acquisition history. Confirm the package type is 80-QVSOP and ensure the part number suffix matches the specific variant required for your design specifications before procurement.

Selection Notes

Select this component when designing circuits that require 32-bit parallel signal switching with integrated output resistance. Ensure the system supply voltage falls within the 4 V to 5.5 V range. Verify compatibility with TTL logic levels if interfacing with legacy or mixed-voltage digital systems.

Part Context

This component belongs to the FST34X2245 family of bus switches. It is manufactured by onsemi, which acquired Fairchild Semiconductor's assets. The device is designed for robust signal routing in compact packages, specifically utilizing the 80-pin QVSOP form factor for space-constrained PCB layouts.

Replacement Considerations

Check for direct equivalents within the FST34X2245 series from onsemi. Verify pinout compatibility and electrical characteristics against other 32-bit bus switches with similar output resistance values before substituting.