Skip to main content

844S2416I

FemtoClock™ Crystal-to-Differential HCSL/LVCMOS Frequency Synthesizer

The 844S2416 is a 17 output, dual-PLL frequency synthesizer optimized to generate a variety of clocks for Ethernet, USB and other interfaces. Using a 25MHz 18pF parallel resonant crystal, the device will generate 24MHz, 25MHz, 100MHz and 200MHz clocks with mixed HCSL and LVCMOS/LVTTL levels.

The 844S2416 is packaged in a 56-pin VFQFN package that is optimum for applications with space limitations.

Features

  • Two LVCMOS/LVTTL single-ended outputs at 24MHz
    Twelve LVCMOS/LVTTL single-ended outputs at 25MHz
    Two differential HCSL output pairs at 100MHz
    One differential HCSL output pair at 100MHz or 200MHz
  • Crystal oscillator interface: 25MHz
  • PLL1VCO: 2.4GHz
  • PLL2VCO range: 1.8GHz - 2.2GHz
    ±10% frequency margining in 1.25% steps
    Selectable spread spectrum – downspread at -0.5%
  • I2C control interface with address confi guration pin and with default loading on release of active low reset
  • 3.3V supply voltage
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package​

Product Specification

Inputs (#)Input TypeInput Freq (MHz)Outputs (#)Output TypeOutput Voltage (V)Output Freq Range (MHz)
1Crystal25.00000017LVCMOS, HCSL3.324.000000, 25.000000, 100.000000, 200.000000

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
844S2416CKILFActiveNLG56VFQFPN56IYesTrayCheck Availability
844S2416CKILFTActiveNLG56VFQFPN56IYesReelCheck Availability

Documents

Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
no-lock
ICS844S2416I Datasheet Datasheet PDF 316 KB Apr 29, 2016
Apps Notes & White Papers
no-lock
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
no-lock
AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
no-lock
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 13, 2014
show all (18)
no-lock
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
no-lock
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
no-lock
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB May 8, 2014
no-lock
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
no-lock
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
no-lock
AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB May 6, 2014
no-lock
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
no-lock
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
no-lock
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 5, 2014
no-lock
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
no-lock
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
no-lock
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
no-lock
AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
no-lock
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
no-lock
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 2014
PCNs & PDNs
no-lock
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 22, 2015
no-lock
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 21, 2015