FSTU3257QSC

Signal Switches, Multiplexers, Decoders Overview

The FSTU3257QSC is a quad 2:1 multiplexer/demultiplexer bus switch fabricated using advanced high-speed CMOS technology. It operates within a voltage range of 4V to 5.5V and features TTL-compatible inputs. The device integrates -2V undershoot protection on all channels, ensuring robust performance in digital systems. Packaged in a 16-lead QSOP format, it provides low on-resistance for efficient signal transmission.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2:1 multiplexer/demultiplexer architecture
• -2V undershoot protection on all channels
• TTL-compatible input logic levels
• Low on-resistance for high-speed switching

Signal Switches, Multiplexers, Decoders Applications

• High-speed data routing in digital communication systems
• Bus switching applications requiring signal integrity
• Portable equipment with limited power supply constraints

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package marking and manufacturer date code against the official Fairchild Semiconductor datasheet to ensure authenticity. Confirm that the -2V undershoot protection specification aligns with your system's input voltage requirements. Check for any lead-free or RoHS compliance markings if environmental regulations apply to your manufacturing process.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad configuration is required for space-constrained designs. The 4V to 5.5V operating range suits standard 5V logic systems. Ensure the QSOP package fits the PCB footprint constraints. Consider the low on-resistance benefit for minimizing signal loss in high-frequency applications compared to standard logic gates.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the FST series of bus switches from Fairchild Semiconductor. It complements other devices like the NC7SB3257P6X but offers a quad configuration instead of a single line. The FSTU3257QSC is designed for applications needing multiple independent signal paths with enhanced protection features.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The QS3257QG from Renesas Electronics serves as a functional substitute, offering similar 4x 2:1 MUX/DEMUX capabilities. Verify pin compatibility and electrical specifications before substitution.