SY89871UMI-TR

Clock Buffers, Drivers Overview

The SY89871UMI-TR is a precision clock divider and fanout buffer featuring LVPECL outputs. It accepts high-speed differential inputs (CML, LVPECL, HSTL, or LVDS) via an internal termination network accessible through the VT pin. The device provides two phase-matched output banks: Bank A passes the input frequency undivided, while Bank B divides the frequency by programmable ratios of 2, 4, 8, or 16. It operates on a single supply voltage of 2.5V or 3.3V, supporting maximum output frequencies up to 2.5GHz and input frequencies up to 3.2GHz.

Clock Buffers, Drivers Feature Summary

• Programmable divide-by-2, 4, 8, or 16 with matched delay between divided and undivided outputs
• Internal input termination with VT pin for flexible AC/DC coupling of CML, LVDS, HSTL, and LVPECL signals
• Low jitter performance with typical RMS phase jitter of 231fs
• Parallel programming capability via S1/S0 select pins

Clock Buffers, Drivers Applications

• OC-3 to OC-192 SONET/SDH applications
• Transponders
• Oscillators
• SONET/SDH line cards

Clock Buffers, Drivers Procurement Notes

Verify that the ordering suffix 'MI' corresponds to the specific package and temperature range required for the design. Confirm RoHS compliance status and lead finish specifications against the current manufacturer datasheet before finalizing procurement plans.

Clock Buffers, Drivers Selection Notes

Select this component when a low-jitter solution is needed to derive multiple clock frequencies from a single source. Ensure the input signal standard matches the supported types (CML, LVDS, etc.) and that the power supply voltage aligns with the 2.5V or 3.3V operating requirements.

Clock Buffers, Drivers Part Context

This part belongs to the SY8987U series of precision clock dividers and buffers. It is functionally related to other devices in the family, such as the SY89874U, which offers similar division capabilities but includes an additional 1:2 fanout buffer alongside the programmable divider.

Clock Buffers, Drivers Replacement Considerations

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