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854S712I - Block Diagram
854S712I - Pinout


1:2 Fanout Buffer With Pre-Emphasis

The 854S712I is a differential, high-speed 1:2 data/clock fanout buffer and line driver. The outputs support pre-emphasis in order to drive backplanes and long transmission lines while reducing inter-symbol interference effects. The pre-emphasis level is configurable to optimize for low bit error rate or power consumption. Pre-emphasis utilizes an increased output voltage swing for transition bits. The device is optimized for data rates up to 4.5 Gbps (NRZ) and for deterministic jitter in data applications and low additive jitter in clock applications. The outputs are LVDS-compliant while the differential input is compatible with a variety of signal levels such as LVDS, LVPECL and CML. Internal input termination, a bias voltage output for AC-coupling and small packaging (VFQFN) supports space-efficient board designs. The 854S712I operates from a 3.3V power supply and supports the industrial temperature range of -40°C to +85°C.


  • 1:2 differential data/clock fanout buffer and line driver
  • 4.5 Gbps data rate (NRZ) (maximum)
  • Differential LVDS outputs
  • Differential input supporting LVDS, LVPECL and CML levels
  • Configurable output pre-emphasis
  • Low-skew outputs: 10ps (maximum)
  • Low data deterministic jitter: 4ps (maximum)
  • LVCMOS interface levels for the control inputs
  • Asynchronous output disable into high-impedance state
  • Internal input termination: 100? (Differential)
  • Additive phase jitter, RMS: 0.08ps (typical)
  • Full 3.3V supply voltage
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)Divider ValueOutput Skew (ps)Additive Phase Jitter Typ RMS (ps)
2LVDS0.000000 - 3000.0000000.000000 - 3000.0000001LVDS, LVPECL, CML13.33.3100.08

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
854S712AKILFActiveNLG16VFQFPN16IYesTubeCheck Availability
854S712AKILFTActiveNLG16VFQFPN16IYesReelCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
854S712 Datasheet Datasheet PDF 345 KB Dec 19, 2014
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
AN-846 Termination - LVDS Application Note PDF 50 KB May 13, 2014
show all (12)
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-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB May 6, 2014
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 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-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 28, 2016
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 13, 2015
PCN# : A1309-01 Changed of Traceability Mark Format Product Change Notice PDF 439 KB Oct 11, 2013
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 25, 2016
IDT Fanout Buffers Product Overview Product Brief PDF 739 KB Feb 17, 2015
show all (4)
High-Performance, Low-Phase Noise Clocks Buffers product brief Product Brief PDF 378 KB Aug 14, 2012

Software & Tools

Title Type Format File Size Datesort icon
854S712I IBIS Model Model - IBIS ZIP 65 KB Aug 25, 2010