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. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
83904AGI-02LF Obsolete TSSOP 16 I Yes Tube Package Info
83904AGI-02LFT Obsolete TSSOP 16 I Yes Reel Package Info

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
83904I-02 Final Data Sheet Datasheet PDF 399 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 120 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 160 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
PDN# : CQ-18-03 Product Discontinuance Notice Product Discontinuation Notice PDF 218 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB
PCN# : TB1403-01 Changed in Carrier Tape, Plastic Reel and Quantity per Reel on TSSOP-14, TSSOP-16 Product Change Notice PDF 663 KB
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB
IDT Fanout Buffers Product Overview Product Brief PDF 739 KB