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84329B-01 - Block Diagram
84329B-01 - Pinout


700MHz, Low Jitter, Crystal-to-3.3V LVPECL Frequency Synthesizer

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

The 84329B-01 is a general purpose, single output high frequency synthesizer and a member of the HiPerClockS™ family of High Performance Clock Solutions from IDT. The VCO operates at a frequency range of 250MHz to 700MHz. The VCO frequency is programmed in steps equal to the value of the crystal frequency divided by 16. The VCO and output frequency can be programmed using the serial or parallel interfaces to the configuration logic. The output can be configured to divide the VCO frequency by 1, 2, 4, and 8. Output frequency steps as small as 125kHz to 1MHz can be achieved using a 16MHz crystal depending on the output dividers.


  • Fully integrated PLL, no external loop filter requirements
  • One differential 3.3V LVPECL output pair
  • Crystal oscillator interface
  • Output frequency range: 31.25MHz - 700MHz
  • VCO range: 250MHz - 700MHz
  • Parallel interface for programming counter and output dividers during power-up
  • Serial 3 wire interface
  • RMS period jitter: 5.5ps (maximum)
  • Cycle-to-cycle jitter: 35ps (maximum)
  • 3.3V supply voltage
  • 0°C to 70°C ambient operating temperature
  • For replacement device use 8T49N203A-dddNLG

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)
1LVPECL31.250000 - 700.00000010.000000 - 25.0000001Crystal13.33.3

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
84329BM-01LFObsoletePSG28SOIC28CYesTubeCheck Availability
84329BM-01LFTObsoletePSG28SOIC28CYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
show all (18)
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB May 8, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB May 6, 2014
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 5, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 2014
PCN# : A1309-01 Changed of Traceability Mark Format Product Change Notice PDF 439 KB Oct 11, 2013
PDN# : CQ-13-01 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 302 KB Jul 25, 2013
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013

Software & Tools

Title Type Format File Size Datesort icon
84329B-01 IBIS Model Model - IBIS ZIP 47 KB Mar 19, 2009