The 8S58035I is a high speed 2-to-6 Differential-to-LVPECL Fanout Buffer. The 8S58035I is optimized for high speed and very low output skew, making it suitable for use in demanding applications such as SONET, 1 Gigabit and 10 Gigabit Ethernet, and Fiber Channel. The internally terminated differential inputs and VREF_AC pins allow other differential signal families such as LVDS, LVDS and CML to be easily interfaced to the input with minimal use of external components. The device also has a 2:1 MUX input, allowing for easy selection between two clock reference sources. The 8S58035I is packaged in a small 5mm x 5mm 32-pin VFQFN package which makes it ideal for use in space-constrained applications.


  • Six LVPECL outputs
  • INx, nINx inputs can accept the following differential input levels:
  • 50Ω internal input termination to VT
  • Two selectable differential input pairs
  • Maximum output frequency: 3.2GHz
  • Output Skew: 45ps (maximum)
  • Part-to-Part Skew: 200ps (maximum)
  • Additive phase jitter, RMS: 47fs (typical),
    (fREF = 622.08MHz, 12kHz - 20MHz, VCC = 3.3V)
  • Propagation Delay: 580ps (maximum)
  • LVPECL mode operating voltage supply range:
    VCC = 2.5V±5%, 3.3V±10%, VEE = 0V
  • -40°C to 85°C ambient operating temperature​

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active VFQFPN 32 I Yes Tray
Active VFQFPN 32 I Yes Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ICS8S58035I Datasheet Datasheet PDF 548 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 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-833 Differential Input Self Oscillation Prevention Application Note PDF 180 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
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 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
Clock Distribution Overview 日本語 Overview PDF 217 KB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB