The MC100ES6221 is a bipolar monolithic differential clock fanout buffer. Designed for most demanding clock distribution systems, the MC100ES6221 supports various applications that require the distribution of precisely aligned differential clock signals. Using SiGe technology and a fully differential architecture, the device offers very low skew outputs and superior digital signal characteristics. Target applications for this clock driver is high performance clock distribution in computing, networking and telecommunication systems.


  • 1:20 differential clock fanout buffer
  • 100 ps maximum device skew
  • SiGe technology
  • Supports DC to 2 GHz operation of clock or data signals
  • ECL/PECL compatible differential clock outputs
  • ECL/PECL/HSTL compatible differential clock inputs
  • Single 3.3 V, -3.3 V, 2.5 V or -2.5 V supply
  • Standard 52 lead LQFP package with exposed pad for enhanced thermal characteristics
  • Supports industrial temperature range
  • Pin and function compatible to the MC100EP221
  • 52-lead Pb-free Package Available

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Obsolete PTQFP 52 C Yes Tray

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
MC100ES6221 Datasheet Datasheet PDF 577 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 KB
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 180 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 120 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 160 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
PCN# : A1403-03 Gold wire to Copper wire Product Change Notice PDF 42 KB
PDN# : N-12-36R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 93 KB
PDN# : N-12-36R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 69 KB
MC100ES6221 2.5V IBIS Model Model - IBIS ZIP 8 KB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB