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

The 84325 is a Crystal-to-3.3 VLVPECL Frequency Synthesizer with Fanout Buffer. The output frequency can be programmed using frequency select pins. The low phase noise characteristics of the 84325 make it an ideal clocksource for Fibre Channel 1, Fibre Channel 2, Infiniband and Gigabit Ethernet applications.


  • 6 differential 3.3V LVPECL outputs
  • Crystal oscillator interface
  • Output frequency range: 106.25MHz to 250MHz
  • Crystal input frequency: 25MHz and 25.5MHz
  • Output skew: 60ps (maximum)
  • RMS phase jitter at 212.5MHz, using a 25.5MHz crystal (637KHz to 10MHz): 2.76ps
  • Phase noise: Typical at 212.5MHz
    Offset Noise Power
    100Hz ................. -92 dBc/Hz
    1KHz ................. -112 dBc/Hz
    10KHz ................. -120 dBc/Hz
    100KHz ................. -122 dBc/Hz
  • 3.3V supply voltage
  • 0°C to 70°C ambient operating temperature
  • Lead-Free package available.
  • Industrial temperature information available upon request
  • For replacement device use 8T49N006A-dddNLGI

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
84325EMLN Obsolete PSG24 SOIC 24 C Yes Tube

Technical Documentation

Title Other Languages Type Format File Size Date
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-831 The Crystal Load curve Application Note PDF 308 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-14-07 Quarter PDN for Market Declined Product Discontinuation Notice PDF 541 KB
PCN# : A1309-01 Changed of Traceability Mark Format Product Change Notice PDF 439 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB