SY58029UMI-TR

Signal Switches, Multiplexers, Decoders Overview

The SY58029UMI-TR is a high-speed, precision differential multiplexer featuring a 4:1 input selection architecture and an integrated 1:2 fanout buffer. It supports data rates up to 5Gbps and clock frequencies up to 4GHz with propagation delays under 390ps. The device utilizes internal termination for CML, LVPECL, and LVDS inputs as small as 100mV. Outputs provide 800mV LVPECL swings in a 32-pin MLF package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Integrates a 4:1 differential multiplexer with a 1:2 fanout buffer for signal duplication
• Features unique patented input termination allowing direct interface to AC or DC coupled signals without external networks
• Delivers ultra-low jitter performance with less than 10ps peak-to-peak total jitter
• Provides temperature-compensated 800mV LVPECL outputs with fast rise and fall times

Signal Switches, Multiplexers, Decoders Applications

• Redundant clock distribution systems
• SONET/SDH clock and data distribution
• Fibre Channel distribution networks
• Gigabit Ethernet clock and data routing

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'UMI-TR' against official Microchip documentation to confirm lead finish and tape-and-reel packaging specifications. Ensure compatibility with industrial temperature ranges and voltage requirements before procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when interfacing mixed signal standards like CML, LVPECL, or LVDS into a unified LVPECL distribution network. It is suitable for designs requiring minimal external termination components and low jitter performance at speeds up to 5Gbps.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to Micrel's Precision Edge product line, now manufactured by Microchip Technology. It serves as a specialized logic IC within the encoder, decoder, multiplexer, and demultiplexer category, designed for high-speed serial communication infrastructure.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SY58028U (CML output variant), SY58030U (400mV LVPECL output variant). Verify pinout and electrical characteristics match application requirements.

Signal Switches, Multiplexers, Decoders FAQ

How does the device handle unused differential inputs?

Unused input pairs should have one end grounded through a 1kΩ resistor and the other connected to VCC through an 825Ω resistor to prevent indeterminate states.

What is the function of the VT pins?

The VT pins serve as center-taps for the internal 50Ω termination network, providing flexibility for both AC and DC coupled input interfaces.