Microchip SY89832UMG-TR: A Precision 3V LVCMOS Fanout Buffer for Demanding Clock Applications

In high-speed digital systems, the integrity and precision of clock signals are paramount. The Microchip SY89832UMG-TR addresses this critical need as a high-performance 1:2 LVCMOS Fanout Buffer designed to distribute a single clock source into two identical, low-noise copies with minimal signal degradation. Operating from a single 3.3V power supply, this device is engineered for applications where low jitter and high signal fidelity are non-negotiable.

The core strength of the SY89832UMG lies in its exceptional jitter performance. It features additive phase jitter as low as a few hundred femtoseconds (fs), making it an ideal choice for timing-sensitive applications such as high-speed data converters, network switches, routers, and enterprise computing hardware. By ensuring a clean and stable output, it prevents timing errors that can lead to increased bit error rates (BER) and system instability.

This fanout buffer accepts a single-ended LVCMOS input and delivers two LVCMOS outputs. Each output is capable of driving transmission lines terminated to 50 Ohms, providing robust signal strength even when driving multiple loads. The device is characterized for operation over the full industrial temperature range (-40°C to +85°C), ensuring reliability in harsh environmental conditions. Its compact and industry-standard 2x2 mm 8-pin DFN package makes it suitable for space-constrained PCB designs.

A key application for the SY89832UMG is in clock trees, where it is used to isolate the system's master clock from the variable load of multiple downstream components. This isolation preserves the clock's rise/fall times and edge quality, which is crucial for maintaining synchronization across the entire system.

ICGOOODFIND: The Microchip SY89832UMG-TR is a superior solution for engineers seeking to maintain signal integrity in high-speed designs. Its combination of ultra-low jitter, a small form factor, and robust 3.3V operation makes it an indispensable component for distributing precise clock signals across modern digital systems.

Keywords: Low Jitter, Fanout Buffer, LVCMOS, Clock Distribution, Signal Integrity