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The 5074B VCXO module IC span the 50-80 MHz range and incorporate an integrated varactor with new oscillator design to improve VCXO oscillation over temperature. The circuit reduces drive level of the crystal for increasing design margins for wide pull-range over the full temperature and range, and new circuit assures proper and clean startup.

Block Diagram

Packages for 5074B

Size (mm)PackageHeight
w/o lid (mm)
PadsD/A connectionLayout TypeLidStepped Lid
7.0x5.0PDFS5070DCK81.56VSSPDFLDK5070-4-10NPDFLDSL5070-5-10K PDFLDSL5070-5-11K


Key Features

  • 2.25 to 3.6V operating supply voltage range
  • 50 to 80 MHz operating frequency range
  • Integrated Varactor for single chip assembly
  • Oscillation start-up detector function aids clean start-up
  • CMOS output duty level
  • 4mA (min) output drive capability
  • 15pF output load
  • Standby CMOS input disables with high impedance output, oscillator stops
  • BiCMOS process
  • -40 to 85°C operating temperature range


  • Communications infrastructure
  • Computers
  • Industrial
  • System Clocks


  • Build 7.0x5.0mm VCXO lower cost than prior generation
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