onsemi MC100EP91DWG: A High-Performance 1:9 Differential Fanout Buffer for Demanding Applications

The onsemi MC100EP91DWG is a high-frequency, low-skew 1:9 differential fanout buffer designed for use in high-speed communication systems, networking equipment, and advanced computing applications. Fabricated using onsemi's advanced ECL (Emitter-Coupled Logic) technology, this component is engineered to deliver exceptional performance where signal integrity and timing precision are paramount.

Operating seamlessly with both 3.3 V and 5 V power supplies, the MC100EP91DWG offers significant design flexibility. It accepts a single differential PECL (Positive ECL) or LVPECL (Low-Voltage PECL) input and generates nine identical, high-quality differential outputs. Its primary function is to distribute a single high-speed clock or data signal to multiple destinations with minimal added distortion or timing error.

A key performance metric for any fanout buffer is output-to-output skew. The MC100EP91DWG excels in this area, featuring exceptionally low output skew of typically 40 ps. This ensures that all nine output signals transition within a very tight window, which is absolutely critical for synchronizing downstream components in high-speed parallel buses and clock distribution networks. Furthermore, the device supports very high operating frequencies, exceeding 1.5 GHz, making it suitable for the most demanding current-generation applications.

The device is offered in a space-saving SOIC-20 Wide Body package, providing a robust and manufacturable solution. To ensure signal integrity, it requires standard ECL termination techniques, such as the use of a VTT termination voltage, typically -2 V. Like all ECL devices, it offers the advantages of very fast edge rates and stable switching characteristics with minimal ground bounce, albeit with higher power consumption compared to CMOS alternatives.

ICGOODFIND: The onsemi MC100EP91DWG is an elite-performance fanout buffer that provides nine precisely synchronized differential outputs from a single input. Its ability to operate at multi-gigabit speeds with ultra-low skew makes it an indispensable component for architects designing high-reliability systems in telecommunications, data centers, and high-performance computing.

Keywords: Fanout Buffer, Low Skew, Differential ECL, High-Speed Clock Distribution, PECL