IDT 82V3911 is a single chip, two channel synchronous Ethernet (SyncE) PLL. The device supports ITU-T G.8262, G.813 and Telcordia GR-253-CORE compliance with hitless reference switching, frequency translation and jitter attenuation. Its ultra-low jitter generation makes it suitable for timing 10GBASE-R, 10GBASE-W, OC-192/STM-64 or 40GBASE-R PHYs.
The high-integration architecture minimizes component count and board space by including two independent digital PLLs (DPLLs); one for the transmit PHY function and one to provide recovered line timing to the system’s synchronous equipment timing source (SETS). Two independent jitter attenuating analog PLLs (APLLs) are also integrated; these APLLs generate clocks with jitter below 0.3 ps RMS over the 10 kHz to 20 MHz integration range and can be used to directly time 10GbE or 40GbE network PHYs or other high speed interfaces.
The DPLLs lock to a wide variety of telecom and Ethernet reference frequencies and suppress reference switching transients to generate highly-reliable output clocks for optimal network performance. IDT 82V3911 offers a network PHY timing solution optimized for use in Ethernet switches, routers, multiservice switching platforms, wireless backhaul equipment and other communications infrastructure.  IDT 82V3911 is available in a 196-ball 15 x 15 mm CABGA package and supports standard industrial temperature range from -40degC to +85degC.


  • Single chip two channel SyncE PLL with hitless reference switching
  • Jitter generation <0.3 ps RMS (10 kHz to 20 MHz) meets the most stringent 10G PHY requirements
  • Two ultra-low-jitter analog PLLs support three clock modes: 622.08 MHz, 625 MHz and 625 MHz x 66/64
  • Generates interface clocks (1GE, 10GBASE-R, 10GBASE-W and 40GBASE-R) and SONET/SDH (OC-192/STM-64)
  • Supports ITU-T G.8262 SyncE compliant equipment
  • Supports Telcordia GR-253-CORE and ITU-T G.813 SONET/SDH compliant equipment
  • Integrates 2 DPLLs, one the transmit path and one for receive path
  • Supports input and output clocks whose frequencies range from 2 kHz to 625 MHz x 66/64
  • Accepts 1 pulse per second (1PPS) sync pulse
  • Complemented by IDT 82V3910 SyncE SETS for 10GbE and 40GbE


Title language Type Format File Size Date
Datasheets & Errata
star 82V3911 Shortform Datasheet Datasheet - Short-form PDF 186 KB
IDT82V3911 Datasheet Datasheet PDF 871 KB
User Guides & Manuals
82V3911 Board User Guide. Manual - Hardware PDF 2.66 MB
82V3911 API Reference Manual Manual - Software PDF 3.08 MB
Application Notes & White Papers
AN-807 Recommended Crystal Oscillators for Network Synchronization Application Note PDF 148 KB
AN-861 Recommended Crystals for IDT VCXO-based Synchronization PLLs Application Note PDF 300 KB
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-831 The Crystal Load curve Application Note PDF 395 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-846 Termination - LVDS Application Note PDF 133 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-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 160 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 120 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 143 KB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 136 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
AN-806 Power Supply Noise Rejection Application Note PDF 438 KB
PCN# : A1702-01 Changed Mold Compound and Solder Paste on Select Packages Product Change Notice PDF 93 KB
Timing Fabric for Communications Equipment Overview Overview PDF 263 KB
IDT Jitter Attenuator Product Overview Overview PDF 1.95 MB
82V3910 and 82V3911 Synchronous Ethernet Timing Devices Product Brief PDF 1.34 MB


Title language Type Format File Size Date
82V3911 Device Driver Package (Source Only) Software & Tools - Other TGZ 145 KB
82V3911 Device Driver Source Code in Zip file format Software & Tools - Other ZIP 238 KB
82V3911_IBIS Model - IBIS ZIP 173 KB
82V3911_BSDL Model - BSDL ZIP 3 KB