3.3V Center Spread-Spectrum EconOscillator™

Industry's Smallest, Low-EMI 3V All-Silicon Center-Spread Clock Oscillator

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The DS1089L is a clock generator that produces a spread spectrum (dithered) square-wave output of frequencies from 130kHz to 66.6MHz. The DS1089L is shipped from the factory programmed at a specific frequency. The DS1089L is pin-for-pin compatible with the DS1087L, however, the DS1089L dithers at equal percentages above and below the center frequency. The user still has access to the internal frequency divider, selectable ±1%, ±2%, ±4%, or ±8% dithered output, dithering rate, and programmable output powerdown/disable mode through an I²C-compatible programming interface. All the device settings are stored in nonvolatile (NV) EEPROM allowing it to operate in stand-alone applications. The DS1089L also has power-down and output-enable control pins for power-sensitive applications.
DS1089L: Typical Operating Circuits DS1089L: Typical Operating Circuits Enlarge+

Key Features

  • Factory-Programmed Square-Wave Generator from 33.3MHz to 66.6MHz
  • Center Frequency Remains Constant Independent of Dither Percentage
  • No External Timing Components Required
  • EMI Reduction
  • Variable Dither Frequency
  • User Programmable Down to 130kHz with Divider (Dependent on Master Oscillator Frequency)
  • ±1%, ±2%, ±4%, or ±8% Selectable Dithered Output
  • Glitchless Output-Enable Control
  • I²C-Compatible Serial Interface
  • Nonvolatile Settings
  • Power-Down Mode
  • Programmable Output Power-Down/Disable Mode


  • Cable Modems
  • Computer Peripherals
  • Copiers
  • POS Terminals
  • Printers

See parametric specs for Silicon Oscillators (17)

Part NumberfOUT
User Prog. fOUTSpread SpectrumVCC
Reset OutOper. Temp.
maxminmaxSee Notes
DS1089L 66130
-2 to 0.75 (-40°C to 0°C)
±0.75 (0°C to 85°C)
I2CYes2.7 to 3.6No-40 to +85
$1.18 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: DS1089L.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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