SY58032UMI

Clock Buffers, Drivers Overview

The SY58032UMI is a high-speed, fully differential LVPECL 1:8 fanout buffer manufactured by Microchip Technology. It provides eight identical output copies with less than 20ps of skew and 76fs RMS phase jitter at 622MHz. The device operates from a 2.5V ±5% or 3.3V ±10% supply and supports clock frequencies up to 4GHz. It features guaranteed AC performance over the industrial temperature range (-40°C to +85°C) and includes unique input termination architecture for direct interfacing with LVPECL, CML, and LVDS signals.

Clock Buffers, Drivers Feature Summary

• Ultra-precision 1:8 fanout buffer with LVPECL outputs and internal termination
• Guaranteed AC performance: DC to 4GHz frequency, <110ps rise/fall time, <330ps propagation delay
• Low-jitter performance: 76fs RMS phase jitter (typical)
• Unique 3-pin input termination accepts DC-coupled and AC-coupled differential inputs

Clock Buffers, Drivers Applications

• All SONET and all GigE clock distribution
• All Fibre Channel clock and data distribution
• Network routing engine timing distribution
• High-end, low-skew multiprocessor synchronous clock distribution

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'MI' corresponds to the MLF-32 package with Sn-Pb lead finish and industrial temperature grade. Confirm that the Pb-Free variant requires the 'MG' suffix. Ensure moisture sensitivity handling protocols are followed as the component is humidity sensitive.

Clock Buffers, Drivers Selection Notes

Select the SY58032UMI when an ultra-precision 1:8 fanout buffer with LVPECL outputs is required. Consider the SY58031U or SY58033U if higher speed or different output swing characteristics are needed. Ensure the design accommodates the 32-pin MLF package thermal requirements via exposed pad soldering.

Clock Buffers, Drivers Part Context

The SY58032UMI belongs to Micrel’s Precision Edge product line, now under Microchip Technology. It is part of a family including the SY58031U and SY58033U, which offer similar 1:8 fanout functionality but with variations in output voltage levels and termination configurations.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitutes include SY58031U and SY58033U. Verify compatibility regarding output swing (400mV vs 800mV) and specific termination requirements before substitution.

Clock Buffers, Drivers FAQ

What input signal types does the SY58032UMI accept?

It accepts LVPECL, CML, and LVDS differential signals, supporting both AC-coupled and DC-coupled interfaces without external level-shifting or termination resistor networks.

How is the VT pin used in the SY58032UMI?

The VT pin serves as a center-tap for the internal 50Ω termination network on the IN and /IN pins, providing maximum interface flexibility for various input standards.

What is the typical output voltage swing of the SY58032UMI?

The LVPECL outputs feature a typical swing of 800mV into 50Ω loads.