The 9VRS4339 is a Intel CK-NET compatible main clock for Intel Netbooks, conforming to the CK-NET specification. It is driven with a 25MHz crystal and generates a variety of clocks, including an LCD clock. An SMBus interface allows full control of the device.


  • Supports Wake_On_LAN (see pin55 pin description)
  • Selectable spread % on CPU, SRC, PCI; Supports margining
  • Uses external 25MHz crystal, external crystal load caps are required for frequency tuning
  • CLKREQ# pins; Support SRC power management
  • Low power differential clock outputs driving 100 ohm differential traces; reduced powe
  • Integrated 33 ohm series resistors on all differential outputs; reduced board space
  • CPU outputs cycle-to-cycle jitter <85ps
  • SRC cycle-to-cycle jitter <85ps
  • SRC meets PCIEX Gen2 specifications
  • SATA outputs cycle-to-cycle jitter <125ps
  • PCI outputs cycle-to-cycle jitter <500ps
  • ±100ppm frequency accuracy on all clocks

Product Options

Orderable Part ID Part Status Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active 56 C Yes Tray
Active 56 C Yes Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
9VRS4339B Datasheet Datasheet PDF 391 KB
User Guides & Manuals
Timing Solutions for Intel Atom-Based Embedded Systems Guide PDF 296 KB
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 KB