SY89872UMI

Clock Buffers, Drivers Overview

The SY89872UMI is a high-speed clock buffer and divider from Microchip Technology’s Precision Edge® series. It accepts LVTTL, CMOS, or differential CML/LVDS inputs and provides four LVPECL outputs. The device integrates a programmable divide-by-4 function on two output channels (QA/QB), allowing simultaneous distribution of the input frequency and its divided counterpart. Operating at supply voltages between 2.375V and 3.63V, it supports maximum frequencies up to 2 GHz. Packaged in an 8-MSOP format, it ensures signal integrity with low jitter and precise timing characteristics for demanding digital systems.

Clock Buffers, Drivers Feature Summary

• Four LVPECL outputs with integrated divide-by-4 capability on QA and QB channels
• Supports LVTTL, CMOS, CML, and LVDS input signaling standards
• Operates within a 2.375V to 3.63V supply voltage range
• Maximum operating frequency of 2 GHz

Clock Buffers, Drivers Applications

• Clock distribution networks requiring simultaneous fundamental and divided signals
• High-speed serial communication interfaces
• Data acquisition systems with mixed single-ended and differential inputs
• Test and measurement equipment requiring precise clock division

Clock Buffers, Drivers Procurement Notes

Verify the package type matches the design requirements, as the 'UMI' suffix indicates an 8-MSOP configuration. Confirm that the application circuit accommodates the LVPECL output swing and common-mode voltage levels specified in the datasheet. Ensure thermal equilibrium is reached before validating DC electrical specifications against the provided limits.

Clock Buffers, Drivers Selection Notes

Select this component when a single clock source must drive multiple loads while simultaneously providing a divided version of the clock signal. It is suitable for designs requiring compatibility with both single-ended logic families (LVTTL/CMOS) and differential standards (CML/LVDS). Verify that the required output frequency does not exceed the 2 GHz maximum limit and that the power supply rails align with the 2.375V–3.63V operational range.

Clock Buffers, Drivers Part Context

The SY89872UMI belongs to the SY89872U family of high-performance clock buffers. This family is designed for applications requiring low jitter and flexible input/output configurations. The specific UMI variant distinguishes itself through its surface-mount MSOP packaging, facilitating compact board layouts compared to larger QFN or TQFP options available in the broader product line.

Clock Buffers, Drivers Replacement Considerations

Direct replacements within the same family include other SY89872U variants with different package suffixes (e.g., SY89872UMG for QFN). Cross-vendor equivalents should be evaluated based on pin compatibility, LVPECL output swing, and maximum frequency ratings.