SY89544UMI-TR

Signal Switches, Multiplexers, Decoders Overview

The SY89544UMI-TR is a differential 4:1 multiplexer from Microchip Technology's Precision Edge family. It operates on a single 2.5V supply and supports data rates up to 3.2 Gbps. The device features an LVDS-compatible output with a typical swing of 350 mV. It includes internal input termination accessible via VT pins, allowing compatibility with AC-coupled and DC-coupled inputs such as LVDS, LVPECL, and CML. The component is housed in a 32-lead QFN package and functions within an ambient temperature range of -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Ultra-low jitter design with minimal crosstalk-induced noise
• Internal input termination network for simplified interface design
• CMOS/TTL-compatible MUX select inputs

Signal Switches, Multiplexers, Decoders Applications

• SONET/SDH channel selection
• Fibre Channel multi-channel selection
• Gigabit Ethernet multi-channel selection

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'TR' indicates tape and reel packaging rather than tube configuration. Confirm that the 'MI' designation aligns with the required lead finish and package variant. Ensure the voltage option 'U' matches the 2.5V system requirement. Cross-reference the datasheet revision to confirm pinout consistency before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a low-jitter differential multiplexer is required for high-speed serial links. It is suitable for systems needing to switch between four differential sources using standard logic control signals. Consider alternative models if a 3.3V supply or dual outputs are necessary. Verify that the internal termination meets the impedance requirements of the source drivers without external components.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SY89544 series, designed for high-performance signal routing. It is part of the Precision Edge product line, which focuses on minimizing jitter and propagation delay. The device integrates multiple functions into a compact footprint, reducing board space compared to discrete solutions. It serves as a core switching element in telecommunications and networking infrastructure equipment.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SY89544UMG-TR