SY89837UMG

Clock Buffers, Drivers Overview

The SY89837UMG is a Precision Edge LVPECL fanout buffer with a 2:1 differential input multiplexer. It distributes clock frequencies from 1kHz to >1.5GHz, featuring guaranteed AC performance over temperature and supply voltage. The device provides 8 low skew LVPECL output copies with <40ps output-to-output skew and <975ps in-to-out propagation delay. It operates on a +2.5V ±5% or +3.3V ±10% supply within the -40°C to +85°C industrial temperature range. Key features include ultra-low jitter (150fs RMS phase jitter) and unique input isolation design.

Clock Buffers, Drivers Feature Summary

• 2:1 Runt Pulse Eliminator (RPE) Input MUX for glitchless switchover
• Fail-Safe Input (FSI) protection against metastable conditions
• Unique 3-pin input termination architecture accepts DC- or AC-coupled inputs
• Ultra-low jitter design with 150fs RMS phase jitter

Clock Buffers, Drivers Applications

• Redundant clock distribution
• Fail-safe clock protection

Clock Buffers, Drivers Procurement Notes

Verify the package type is 32-pin QFN (5mm x 5mm) with an exposed pad. Confirm the operating temperature range is -40°C to +85°C. Ensure the power supply matches either +2.5V ±5% or +3.3V ±10%. Check that the part number suffix 'MG' indicates Pb-Free finish with NiduAu lead finish.

Clock Buffers, Drivers Selection Notes

Select this component when glitchless clock switchover is required without runt pulses. It supports CML, PECL, and LVDS inputs via its unique termination. Use the CAP pin to control Power-On Reset delay if RPE functionality is needed. Unused outputs may be left open.

Clock Buffers, Drivers Part Context

The SY89837UMG belongs to Micrel's Precision Edge product line, designed for high-speed, low-jitter applications. It is manufactured by Microchip Technology following the acquisition of Micrel. The device integrates both fanout buffering and multiplexing capabilities in a single package.

Clock Buffers, Drivers Replacement Considerations

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