SY89473UMG-TR

Signal Switches, Multiplexers, Decoders Overview

The SY89473UMG-TR is a precision high-speed 2:1 differential multiplexer with 1:2 fanout and internal termination. It processes clocks up to 2.5GHz and data up to 2.5Gbps. The device accepts AC- or DC-coupled inputs as small as 100mV (200mVpp) without external level shifting or termination networks. It operates from a 2.5V ±5% or 3.3V ±10% supply voltage. The output provides an 800mV, 100K-compatible LVPECL signal with guaranteed rise/fall times under 190ps. It functions within the industrial temperature range of –40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Selects between two input channels and provides two copies of the selected output
• Unique patented input isolation design minimizes crosstalk
• Ultra-low jitter design for precise clock applications
• Patent-pending input termination and VT pin accept DC- and AC-coupled inputs

Signal Switches, Multiplexers, Decoders Applications

• Clock switchover
• Data distribution
• LAN/WAN systems
• Enterprise servers
• ATE and test and measurement equipment

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the component matches the exact part number SY89473UMG-TR. Confirm the package type is QFN-24 and the operating range is Industrial (-40°C to +85°C). Ensure the lead finish is NiPdAu Pb-Free. Check datasheet specifications against your system requirements before procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Choose this component when a low-jitter 2:1 multiplexer with 1:2 fanout is required. It supports both 2.5V and 3.3V supplies. The unique input architecture allows direct interfacing with various signal types without external components. Verify that the maximum frequency and jitter specifications meet your application needs.

Signal Switches, Multiplexers, Decoders Part Context

The SY89473U belongs to Micrel’s Precision Edge product line. It is designed for high-speed clock and data routing. The device integrates internal termination to simplify circuit design. It is suitable for applications requiring minimal signal degradation and high reliability in demanding environments.

Signal Switches, Multiplexers, Decoders Replacement Considerations

For multiple-clock switchover solutions, refer to the SY89840–SY89843U family. Related products include the SY89474U (LVDS version) and SY89475U (CML version). Verify compatibility with existing circuit designs when substituting.

Signal Switches, Multiplexers, Decoders FAQ

What is the minimum input voltage swing supported by the SY89473UMG-TR?

The device accepts differential signals as small as 100mV (200mVpp) without any level shifting or termination resistor networks.

How does the SY89473UMG-TR handle input termination?

It features a unique 3-pin input termination architecture that directly interfaces to any differential signal (AC- or DC-coupled) using internal 50Ω termination to VT pins.

What are the power supply options for the SY89473UMG-TR?

The device operates from a 2.5V ±5% or 3.3V ±10% supply voltage.