SY58020UMG

Clock Buffers, Drivers Overview

The SY58020UMG is a 6GHz, 1:4 CML fanout buffer/translator manufactured by Microchip Technology (originally Micrel). It provides four identical differential output copies with less than 15ps skew and 27fs RMS typical additive phase jitter. The device accepts input signals as low as 100mV via a unique 3-pin termination architecture supporting LVPECL, LVDS, and CML inputs. It operates from a 2.5V ±5% or 3.3V ±10% supply within the industrial temperature range of -40°C to +85°C. Key electrical parameters include a maximum propagation delay of 260ps, rise/fall times under 60ps, and an output swing of 400mV into 50Ω loads.

Clock Buffers, Drivers Feature Summary

• Precision 1:4 CML fanout buffer with <15ps max skew and 27fs RMS typical additive phase jitter
• Unique patented 3-pin input termination accepting LVPECL, LVDS, and CML signals down to 100mV
• Guaranteed AC performance over temperature/voltage with >6GHz fMAX clock capability
• Internal 50Ω source terminated CML outputs with 400mV typical swing

Clock Buffers, Drivers Applications

• SONET and GigE clock distribution
• Fibre Channel clock and data distribution
• Backplane distribution
• Data distribution for OC-48, OC-48+FEC, and XAUI
• High-end, low skew multiprocessor synchronous clock distribution

Clock Buffers, Drivers Procurement Notes

Verify the package marking '020U' and Pb-Free bar-line indicator on the QFN-16 component. Confirm the lead finish is NiPdAu. Ensure the ordering suffix matches the required packaging format, distinguishing between tube (UMG) and tape and reel (UMG TR) variants. Check for humidity sensitivity requirements during storage and handling.

Clock Buffers, Drivers Selection Notes

Select the SY58020UMG when a 1:4 CML fanout buffer with low jitter is required. Consider the SY58021U or SY58022U if LVPECL outputs with 800mV or 400mV swings are needed instead of CML. Verify that the application supports the 2.5V or 3.3V supply voltage ranges and the -40°C to +85°C operating temperature. Ensure the input signal amplitude meets the minimum 100mV requirement for proper operation.

Clock Buffers, Drivers Part Context

The SY58020UMG belongs to Micrel’s Precision Edge product line, now part of Microchip Technology. It is designed for high-speed timing and communications applications requiring precise clock distribution. The device features internal I/O termination to simplify interface design without external resistor networks.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.