SY89874UMI

Overview

The SY89874UMI is a low-skew, low-jitter clock buffer and divider manufactured by Microchip Technology. It integrates a programmable clock divider with a 1:2 fanout buffer in a 16-pin QFN package. The device accepts high-speed differential inputs (CML, LVDS, PECL, HSTL) and provides LVPECL outputs. Key electrical parameters include a maximum output frequency of 2.5 GHz, a supply voltage range of 2.375V to 3.63V, and an operating temperature range of -40°C to +85°C. It features guaranteed AC performance with less than 15 ps within-device skew and less than 10 ps peak-to-peak total jitter.

Feature Summary

• Integrated Programmable Clock Divider and 1:2 Fanout Buffer
• Low Jitter Design: <10 ps PP Total Jitter, <1 ps RMS Cycle-to-Cycle Jitter
• Flexible Input Termination via VT Pin for CML, PECL, LVDS, and HSTL
• Programmable Divider Ratios of 1, 2, 4, 8, and 16

Applications

• SONET/SDH Line Cards
• Transponders
• High-End Multiprocessor Sensors

Procurement Notes

Verify the ordering suffix 'UMI' against official Microchip documentation to confirm specific packaging or tape-and-reel configurations. Ensure compatibility with the required input logic standards and power supply voltages (2.5V or 3.3V). Confirm that the 16-QFN package dimensions meet the PCB layout requirements.

Selection Notes

Select this component when a single differential clock source needs to be divided and distributed to two LVPECL loads. The internal termination simplifies interface design for various logic families. Ensure the input signal swing meets the minimum requirements for the selected divider ratio and output frequency.

Part Context

The SY89874U belongs to Microchip's Precision Edge® family of clock drivers and buffers. This series focuses on low-jitter performance and flexible input/output interfaces for high-speed digital systems. The UMI variant specifically denotes the 16-lead QFN package and industrial temperature range.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence if considering alternative manufacturers.