SY58040UMG

Signal Switches, Multiplexers, Decoders Overview

The SY58040UMG is a high-speed 4x4 CML 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) and propagation delay under 350ps. It operates on a single 2.5V or 3.3V supply within the -40°C to +85°C industrial temperature range, housed in a 44-pin QFN package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides flexible crosspoint switching between any input pair to any output pair using TTL/CMOS-compatible address inputs.
• Features unique patent-pending channel-to-channel isolation design for superior crosstalk performance.
• Includes internal 50Ω input termination architecture that accepts AC- or DC-coupled differential signals as small as 100mV without external level shifting.
• Outputs are 50Ω source-terminated CML with extremely fast rise/fall times guaranteed to be less than 60ps.

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 official documentation to confirm packaging type. The standard tube version uses the UMY suffix, while the tape and reel variant uses the UMYTR suffix. Confirm RoHS compliance status and moisture sensitivity levels prior to integration into manufacturing processes.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a low-jitter, high-density signal routing solution is required for high-speed serial links. Ensure the system power supply accommodates the specified voltage ranges and that PCB layout guidelines for thermal management of the exposed pad are strictly followed to maintain reliability.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to Micrel's Precision Edge product line, optimized for high-speed digital signal processing and telecommunications infrastructure. It serves as a critical interconnect element in complex switching matrices where signal integrity and precise timing are paramount for system performance.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.

Signal Switches, Multiplexers, Decoders FAQ

How does the device handle input termination?

The SY58040U utilizes a unique 3-pin input termination architecture. Each side of the differential input pair internally terminates to a VT pin through 50Ω, allowing direct interface to various signal types without external resistor networks.

What is the maximum operating frequency for clock signals?

The device guarantees operation for clock frequencies up to 4GHz, with a maximum operating frequency specification of 3GHz for clock signals at VOUT ≥ 200mV.