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Very Low Power Clock for Intel Netbooks

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.

The datasheet for the 9VRS4339 is available under NDA . Please contact your local IDT sales office to request a datasheet. 


  • 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 Specification

Outputs (#)Output Freq Range (MHz)Input Freq (MHz)Core Voltage (V)Output Voltage (V)Chipset Manufacturer
1914.318000, 25.000000, 27.000000, 33.330000, 48.000000, 96.000000, 100.000000, 133.330000, 167.670000, 200.00000025.0000001.50.7, 1.5, 3.3Intel

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
9VRS4339BKLFActiveNDG56P2VFQFPN56CYesTrayCheck Availability
9VRS4339BKLFTActiveNDG56P2VFQFPN56CYesReelCheck Availability


There are no public documents available for this product. Click here to request documentation.