SY89465UMY

Clock Buffers, Drivers Overview

The SY89465UMY is a low-jitter, 1:10 LVDS fanout buffer featuring a 2:1 differential input multiplexer with Runt Pulse Eliminator (RPE) and internal termination. It operates from a 2.5V ±5% supply voltage within an industrial temperature range of –40°C to +85°C. The device supports frequencies up to 2.0 GHz with typical RMS phase jitter of 183 fs at 622 MHz. Key electrical parameters include a maximum propagation delay of 1200 ps, output rise/fall times under 220 ps, and a 325 mV LVDS output swing. It utilizes a 44-pin QFN package.

Clock Buffers, Drivers Feature Summary

• 2:1 Multiplexer with Runt Pulse Eliminator (RPE) for glitchless switchover
• Fail-Safe Input (FSI) protection against metastable conditions
• Internal 3-pin termination architecture supporting AC/DC-coupled inputs
• Ultra-low jitter design with <0.7 ps RMS MUX crosstalk-induced jitter

Clock Buffers, Drivers Applications

• Redundant clock switchover systems
• Fail-safe clock protection circuits
• LAN/WAN infrastructure equipment
• Enterprise server clock distribution
• Automated Test Equipment (ATE)

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix 'MY' corresponds to the standard QFN-44 package with matte tin lead finish and industrial operating range. Confirm that the component is sourced as a Pb-Free product. Ensure compatibility with the 2.5V supply requirement and check for any specific moisture sensitivity level handling procedures during assembly.

Clock Buffers, Drivers Selection Notes

Select this component when redundant clock sources require seamless switching without runt pulses. The internal termination allows direct interfacing with CML, PECL, or LVDS signals without external resistor networks. Ensure the application frequency does not exceed 2.0 GHz and that the power supply remains within the 2.375V to 2.625V range for guaranteed AC performance.

Clock Buffers, Drivers Part Context

This part belongs to Micrel’s Precision Edge® high-speed product line, now manufactured by Microchip Technology following acquisition. It serves as a specialized clock management solution designed for high-reliability applications requiring precise timing and robust signal integrity in noisy environments.

Clock Buffers, Drivers Replacement Considerations

SY89465UMG TR is a parameter-equivalent alternative available in a tape-and-reel format. Verify package compatibility and ensure the replacement maintains the same RPE and FSI functionality if these features are critical to the design.