NOTICE - The following device(s) are recommended alternatives:

The 84427 is a Crystal-to-LVDS Frequency Synthesizer/Fanout Buffer. The output frequency can be programmed using the frequency select pins. The low phase noise characteristics of the 84427 make it an ideal clock source for 10 Gigabit Ethernet, 10 Gigabit Fibre Channel, OC3 and OC12 applications.


  • Six LVDS outputs
  • Crystal oscillator interface
  • Output frequency range: 77.76MHz to 625MHz
  • Crystal input frequency: 19.44MHz, 25MHz or 25.5MHz
  • RMS phase jitter at 155.52MHz, using a 19.44MHz crystal (12kHz to 20MHz): 3.4ps (typical)
    Phase noise:
    Offset                    Noise Power
      100Hz ............... -95 dBc/Hz
        1kHz ............... -110 dBc/Hz
      10kHz ............... -120 dBc/Hz
    100kHz ............... -121 dBc/Hz
  • 3.3V supply voltage
  • 0°C to 70°C ambient operating temperature
  • Available in lead-free RoHS-compliant package

Product Options

注文可能な製品ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 購入/サンプル
84427CMLF Obsolete PSG24 SOIC 24 C Yes Tube
84427CMLFT Obsolete PSG24 SOIC 24 C Yes Reel


タイトル 他の言語 タイプ 形式 サイズ 日付
84427 Datasheet Datasheet PDF 193 KB
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-831 The Crystal Load curve Application Note PDF 308 KB
AN-846 Termination - LVDS Application Note PDF 50 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB
AN-839 RMS Phase Jitter Application Note PDF 149 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB
AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
AN-801 Crystal-High Drive Level Application Note PDF 109 KB
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB
PDN# : CQ-15-03 Quarter PDN for Declined Market Product Discontinuation Notice PDF 542 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Products for Radio Applications (日本語) English Product Brief PDF 2.34 MB
IDT Clock Generation Overview (日本語) English Overview PDF 1.83 MB
IDT Clock Distribution Overview (日本語) English Overview PDF 3.79 MB