SY89540UMY-TR

Signal Switches, Multiplexers, Decoders Overview

The SY89540UMY-TR is a low-jitter, high-speed 4x4 LVDS crosspoint switch from the Precision Edge® series. It guarantees data rates up to 3.2Gbps over temperature and voltage. The device features a unique 3-pin input termination architecture that directly interfaces with AC or DC-coupled differential signals as small as 100mV without external level shifting. It operates on a 2.5V ±5% supply within an industrial temperature range of –40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Patent-pending channel-to-channel isolation design for superior crosstalk performance
• Internal 50Ω input termination accepting DC- and AC-coupled differential inputs
• Ultra-low jitter design with guaranteed AC performance across operating conditions

Signal Switches, Multiplexers, Decoders Applications

• SONET/SDH channel select applications
• Fibre Channel multi-channel select applications
• Gigabit Ethernet multi-channel select applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'TR' indicates tape and reel packaging when sourcing this component. Confirm the manufacturer designation aligns with Microchip Technology following their acquisition of Micrel. Ensure the package type matches the 44-pin QFN specification required for your PCB layout.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for precision telecom and enterprise server/storage distribution where low skew and high-speed switching are critical. It supports both buffer mode (1:4 fanout) and crosspoint mode configurations via TTL/CMOS-compatible control pins. Ensure the application environment remains within the specified -40°C to +85°C temperature range.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Precision Edge® product line, designed for high-speed signal routing. It serves as a core switching element in telecommunications and storage networks. The device integrates internal termination to simplify interface designs for various differential signaling standards like LVDS, LVPECL, and CML.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SY89540UMY

Signal Switches, Multiplexers, Decoders FAQ

How does the device handle input termination?

It utilizes a patent-pending 50Ω input termination architecture where each side of the differential input pair terminates to a VT pin, providing center-tap flexibility.

What is the default operational mode upon power-up?

The device defaults to buffer mode (IN to Q), buffering the selected input signal to all four outputs if LOAD and CONFIG signals are not exercised.