The 9FG107 is a Synthesizer that provides 7 differential output pairs that are compliant to the Intel CK409/ CK410 specification. It provides support for PCI-Express, next generation I/O, and SATA. The part synthesizes several output frequencies from either a 14.31818 MHz crystal or a 25 MHz crystal. The device can also be driven by a reference input clock instead of a crystal. It provides outputs with cycle-to-cycle jitter of less than 85 ps and output-to-output skew of less than 85 ps. 9FG107 also provides a copy of the reference clock and 3 33 MHz PCI output clocks. Frequency selection can be accomplished via strap pins or SMBus control.


  • Generates common CPU/PCI Express frequencies from 14.318 MHz or 25 MHz
  • Crystal or reference input
  • 7 - 0.7 V HCSL differential output pairs
  • 3 - 33 MHz PCI outputs
  • 1 - REFOUT
  • Supports Serial-ATA at 100 MHz
  • Two spread spectrum modes: 0 to -0.5 downspread and +/-0.25% centerspread
  • Unused inputs may be disabled in either driven or Hi-Z state for power management


Title language Type Format File Size Date
star 9FG107 Datasheet Datasheet PDF 262 KB
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-843 PCI Express Reference Clock Requirements Application Note PDF 1.90 MB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-845 Termination - LVCMOS Application Note PDF 146 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-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 136 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
AN-808 PCI Express/HCSL Termination Application Note PDF 137 KB
PCN#: TB-0510-05 New Shipping Tube for TSSOP/TVSOP/TSSOP Exposed Product Change Notice PDF 201 KB
PDN# : K-13-01R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 125 KB
PDN# : K-13-01R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 125 KB
PDN# : K-13-01 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 122 KB