SY58040UMI-TR

Signal Switches, Multiplexers, Decoders Overview

The SY58040UMI-TR 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 operates from a 2.5V ±5% or 3.3V ±10% power supply within an industrial temperature range of –40°C to +85°C. Key electrical parameters include a propagation delay of less than 350ps, rise/fall times under 60ps, and output-to-output skew of less than 25ps. It utilizes CML outputs with 400mV swing and includes 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 unique 50Ω input termination architecture that accepts DC- and AC-coupled differential inputs as small as 100mV without external level shifting or resistor networks.
• Delivers ultra-low jitter design with guaranteed AC performance over temperature and voltage ranges.
• Includes 50Ω source terminated CML outputs to minimize round-trip reflections.

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 'TR' indicates tape and reel packaging when sourcing this component. Confirm the manufacturer origin, as the datasheet identifies Micrel, Inc., which was acquired by Microchip Technology. Ensure the package type matches the required 44-pin QFN form factor for your PCB layout. Check for Pb-Free green package compliance if environmental regulations apply to your assembly process. Validate that the industrial temperature range meets your operational environment requirements.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for applications requiring precise signal routing in high-speed digital environments. It is suitable where low skew and minimal jitter are critical for signal integrity. Consider its compatibility with CML logic levels and its ability to interface directly with various differential signaling standards like LVDS or LVPECL via appropriate coupling. Evaluate the power supply constraints against your system's available rails, as it supports both 2.5V and 3.3V operations.

Signal Switches, Multiplexers, Decoders Part Context

The SY58040U belongs to Micrel’s Precision Edge product line, focusing on high-speed, low-jitter timing solutions. This specific part number variant includes the 'TR' suffix, denoting tape and reel packaging for automated assembly. The device is manufactured by Micrel, Inc., now part of Microchip Technology. It serves as a specialized interconnect solution for distributing clocks and data in complex telecommunications and storage architectures.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Verify compatibility with existing circuit designs before considering alternative components from other manufacturers. Consult official distributor databases for current equivalent listings if direct replacement is necessary.

Signal Switches, Multiplexers, Decoders FAQ

How does the SY58040U handle input termination?

The device features a unique 3-pin input termination architecture with internal 50Ω resistors connecting each side of the differential input pair to a VT pin, eliminating the need for external termination resistor networks.

What is the maximum data rate supported by this switch?

The SY58040U guarantees AC performance for data rates up to 5Gbps over the full operating temperature and voltage range.

Can unused output pairs be left open?

Yes, unused output pairs may be left open according to the datasheet specifications.