SY58040UMI

Signal Switches, Multiplexers, Decoders Overview

The SY58040UMI is a low-jitter, high-speed 4x4 crosspoint switch designed for precision telecom and enterprise server/storage distribution applications. It supports data rates up to 5Gbps and clock frequencies up to 4GHz. The device features ultra-low jitter with a typical RMS phase jitter of 67fs (12kHz-20MHz). It guarantees AC performance over temperature and voltage, including propagation delay less than 350ps and rise/fall times under 60ps. Operating from a 2.5V ±5% or 3.3V ±10% supply, it includes unique channel-to-channel isolation and internal 50Ω input termination.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides crosspoint switching between any input pair to any output pair with patent-pending channel-to-channel isolation for superior crosstalk performance.
• Features a unique 3-pin input termination architecture that accepts DC- and AC-coupled differential inputs as small as 100mV without external level shifting or resistor networks.
• Delivers 400mV CML output swing with 50Ω source-terminated outputs to minimize round-trip reflections.
• Operates from dual voltage supplies of 2.5V ±5% or 3.3V ±10% within the industrial temperature range.

Signal Switches, Multiplexers, Decoders Applications

• Data communication systems
• SONET/SDH data and clock applications
• Fibre Channel applications
• Gigabit Ethernet applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and tape/reel configuration. Confirm that the component meets the required industrial temperature range specifications for your application environment. Ensure power supply decoupling capacitors are placed close to the VCC pins as specified in the datasheet to maintain signal integrity and stable operation.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when precise timing distribution is critical for high-speed serial links. The internal input termination simplifies interface design by eliminating external resistors for AC or DC coupling. Consider the 44-pin QFN package constraints for PCB layout and thermal management. Verify compatibility with LVPECL, LVDS, or CML source signals based on the provided interface application diagrams.

Signal Switches, Multiplexers, Decoders Part Context

The SY58040U belongs to Micrel’s Precision Edge product line, which focuses on high-speed, low-jitter solutions for telecommunications and enterprise markets. This specific model is a 4x4 crosspoint switch optimized for distributing clock frequencies and data rates in demanding environments. It complements other high-speed interconnect components by providing flexible routing capabilities with minimal signal degradation.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The datasheet lists the SY58040UMY and SY58040UMYTR as equivalent part numbers differing only in packaging format (tray vs. tape and reel). No other direct substitute part numbers are explicitly confirmed in the provided documentation. Verify pinout and electrical characteristics if considering alternatives from other manufacturers.