The 83904I-02 is a low skew, high performance 1-to-4 Crystal-to-LVCMOS Fanout Buffer. The 83904I-02 has selectable single-ended clock or two crystal-oscillator inputs. There is an output enable to disable the outputs by placing them into a high-impedance state. Guaranteed output and part-to-part skew characteristics make the 83904I-02 ideal for those applications demanding well defined performance and repeatability.


  • Four LVCMOS / LVTTL outputs, 19Ω output impedance at VDD = VDDO = 3.3V
  • Two crystal oscillator input pairs LVCMOS / LVTTL clock input
  • Crystal input frequency range: 12MHz – 38.88MHz
  • Output frequency: 200MHz (maximum)
  • Output skew: 40ps (maximum) at VDD = VDDO = 3.3V
  • RMS phase jitter @ 25MHz output, using a 25MHz crystal, (100Hz – 1MHz): 0.16ps (typical) at VDD = VDDO = 3.3V
  • RMS phase noise at 25MHz
    Offset                    Noise Power
      100Hz .............. -118.4 dBc/Hz
        1kHz............... -141.5 dBc/Hz
      10kHz............... -157.2 dBc/Hz
    100kHz............... -157.2 dBc/Hz
  • Power Supply Voltage Modes:
    Core / Output
    3.3V / 3.3V
    3.3V / 2.5V
    3.3V / 1.8V
    2.5V / 2.5V
    2.5V / 1.8V
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) packaging​

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
83904AGI-02LF Last Time Buy PGG16 TSSOP 16 I Yes Tube
83904AGI-02LFT Last Time Buy PGG16 TSSOP 16 I Yes Reel

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
83904I-02 Final Data Sheet Datasheet PDF 399 KB Apr 7, 2016
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 12, 2014
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 11, 2014
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 10, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 7, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 5, 2014
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 5, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 23, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 23, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 14, 2014
PDN# : CQ-18-03 Product Discontinuance Notice Product Discontinuation Notice PDF 218 KB Apr 26, 2018
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 13, 2016
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 14, 2016
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 27, 2016
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 12, 2015
PCN# : TB1403-01 Changed in Carrier Tape, Plastic Reel and Quantity per Reel on TSSOP-14, TSSOP-16 Product Change Notice PDF 663 KB Apr 7, 2014
Timing Solutions Products Overview Overview PDF 4.11 MB Oct 31, 2018
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 24, 2016
IDT Fanout Buffers Product Overview Product Brief PDF 739 KB Feb 16, 2015