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8543i

Low Skew,1-to-4 Differential-to-LVDS Fanout Buffer

The 8543I is a low skew, high performance 1-to-4 Differential-to-LVDS Clock Fanout Buffer. Utilizing Low Voltage Differential Signaling (LVDS) the 8543I provides a low power, low noise, solution for distributing clock signals over controlled impedances of 100Ω. The 8543I has two selectable clock inputs. The CLK, nCLK pair can accept most standard differential input levels. The PCLK, nPCLK pair can accept LVPECL, CML, or SSTL input levels. The clock enable is internally synchronized to eliminate runt pulses on the outputs during asynchronous assertion/deassertion of the clock enable pin.
 
Guaranteed output and part-to-part skew characteristics make the 8543I ideal for those applications demanding well defined performance and repeatability.

Features

  • Four differential LVDS output pairs
  • Selectable differential CLK/nCLK or LVPECL clock inputs
  • CLK/nCLK pair can accept the following differential input levels:
    LVPECL, LVDS, LVHSTL, SSTLHCSL
  • PCLK/nPCLK pair can accept the following differential input levels: LVPECL, CMLSSTL
  • Maximum output frequency: 650MHz
  • Translates any single-ended input signals to LVDS levels with resistor bias on nCLK input
  • Additive phase Jitter, RMS: 0.164ps (typical)
  • Output skew: 40ps (maximum)
  • Part-to-part skew: 600ps (maximum)
  • Propagation delay: 2.6ns (maximum)
  • Full 3.3Vsupply mode
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free package

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Skew (ps)Additive Phase Jitter Typ RMS (ps)
4LVDS0.000000 - 650.0000000.000000 - 800.0000002HSTL, LVDS, SSTL, CML, HCSL, LVPECL13.3400.164

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
8543BGILFActivePGG20TSSOP20IYesTubeCheck Availability
8543BGILFTActivePGG20TSSOP20IYesReelCheck Availability

Documents

Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
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8543I Data Sheet Datasheet PDF 273 KB Mar 26, 2015
Apps Notes & White Papers
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AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
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AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
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AN-846 Termination - LVDS Application Note PDF 50 KB May 13, 2014
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AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
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AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
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AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
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AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
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AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB May 6, 2014
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AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
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AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
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AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
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AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
PCNs & PDNs
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PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 14, 2016
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PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 15, 2016
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PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 28, 2016
show all (6)
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PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 13, 2015
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PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 22, 2015
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PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 21, 2015
Other
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IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
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IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 25, 2016

Software & Tools

Title Type Format File Size Datesort icon
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8543I IBIS Model Model - IBIS ZIP 13 KB Aug 9, 2007