FST3253QSCX

Signal Switches, Multiplexers, Decoders Overview

The FST3253QSCX is a dual 4:1 multiplexer/demultiplexer bus switch manufactured by ON Semiconductor. It utilizes high-speed CMOS technology and operates within a supply voltage range of 4.0V to 5.5V. The device features a typical on-resistance of 4Ω at VCC=4.5V, ensuring minimal propagation delay and low ground bounce noise. It supports TTL-compatible control inputs and offers a high-impedance state when the output enable (OE) signal is HIGH. The component is housed in a 16-lead Quarter Size Outline Package (QSOP).

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual 4:1 Multiplexer/Demultiplexer Bus Switch architecture
• Low on-resistance for minimal propagation delay
• TTL-compatible control inputs
• High-impedance state when OE is HIGH

Signal Switches, Multiplexers, Decoders Applications

• Bus switching applications requiring low on-resistance
• Multiplexing and demultiplexing data lines
• Systems utilizing TTL-compatible logic levels

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the updated part number format on the official ON Semiconductor website, as Fairchild orderable part numbers with underscores have been changed to dashes to meet system requirements. Confirm package availability and tape and reel options by checking the ordering code suffixes. Ensure compliance with RoHS and material composition standards relevant to your specific application requirements.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for applications requiring dual 4:1 mux/demux functionality with low on-resistance. Ensure the operating voltage falls within the 4.0V to 5.5V range. Verify that the QSOP package fits the PCB layout constraints. Consider the propagation delay characteristics relative to the system speed requirements.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the Fairchild Switch family, which derives from proven switch technology used in products like the 74LVX3L384. It is now part of the ON Semiconductor portfolio following the integration of Fairchild Semiconductor. The product line focuses on high-speed CMOS bus switches designed for efficient signal routing.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check the ON Semiconductor website for updated part numbers replacing Fairchild orderable codes. The underscore (_) in Fairchild part numbers has been changed to a dash (-). Verify compatibility with existing designs using the updated nomenclature.