MC100ES6254 is designed for very skew critical differential clock distribution systems and supports clock frequencies from DC up to 3.0 GHz. Typical applications for the MC100ES6254 are primary clock distribution, switching and loopback systems of highperformance computer, networking and telecommunication systems, as well as on-board clocking of OC-3, OC-12 and OC-48 speed communication systems. Primary purpose of the MC100ES6254 is high-speed clock switching applications. In addition, the MC100ES6254 can be configured as single 1:6 or dual 1:3 LVPECL fanout buffer for clock signals, or as loopback device in high-speed data applications. The MC100ES6254 can be operated from a 3.3 V or 2.5 V positive supply without the requirement of a negative supply line.


  • Fully differential architecture from input to all outputs
  • SiGe technology supports near-zero output skew
  • Supports DC to 3 GHz operation(1) of clock or data signals
  • LVPECL compatible differential clock inputs and outputs
  • LVCMOS compatible control inputs
  • Single 3.3 V or 2.5 V supply
  • 50 ps maximum device skew(1)
  • Synchronous output enable eliminating output runt pulse generation and metastability
  • Standard 32 lead LQFP package
  • Industrial temperature range
  • 32-lead Pb-free package available

Product Options

Orderable Part ID Part Status Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Obsolete 32 C Yes Tray
Obsolete 32 C Yes Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
MC100ES6254 Datasheet Datasheet PDF 532 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-833 Differential Input Self Oscillation Prevention Application Note PDF 180 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 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# : A1401-02 Alternate Copper Wire Assembly Site Product Change Notice PDF 36 KB
PDN# : N-12-22R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 363 KB
PCN# : TB1303-01 Change of Carrier Tape for TQFP-32, TQFP-48 Product Change Notice PDF 472 KB
PDN# : N-12-22R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 209 KB
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB
MC100ES6254 3.3V IBIS Model Model - IBIS ZIP 10 KB
Clock Distribution Overview 日本語 Overview PDF 217 KB