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8440258-46 - Block Diagram
8440258-46 - Pinout

8440258-46

FemtoClock® Crystal/LVCMOS-to-LVDS/LVCMOS Frequency Synthesizer

The ICS8440258-46 is an eight output synthesizer optimized to generate Ethernet clocks. The device will generate 125MHz and 25MHz clocks from a 25MHz crystal with a very good jitter performance. The ICS8440258-46 uses IDT’s 3RD generation low phase noise VCO technology. The ICS8440258-46 is packaged in a small, 5mm x 5mm VFQFN package.

Features

  • Four differential LVDS outputs at 125MHz
  • Two LVCMOS/LVTTL single-ended outputs at 125MHz
  • Two LVCMOS/LVTTL single-ended outputs at 25MHz
  • Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input
  • RMS phase jitter @ 125MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.5ps (typical)
  • Full 2.5V supply mode
  • 0°C to 70°C ambient operating temperature
  • Pin Assignment • Lead-free (RoHS 6) packagingages

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
8440258CK-46LFActiveNLG32P3VFQFPN32CYesTrayCheck Availability
8440258CK-46LFTActiveNLG32P3VFQFPN32CYesReelCheck Availability

Documents

Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
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8440258-46 Datasheet Datasheet PDF 269 KB Feb 18, 2014
PCNs & PDNs
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PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 28, 2016
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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# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013

Software & Tools

Title Type Format File Size Datesort icon
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8440258-46 IBIS Model Model - IBIS ZIP 64 KB Mar 19, 2009