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MK2059-01 - Block Diagram
MK2059-01 - Pinout


VCXO-Based Frame Clock Frequency Translator

Alternative Products
NOTICE - The following device(s) are recommended alternatives:

The MK2059-01 is a VCXO (Voltage Controlled Crystal Oscillator) based clock generator that produces common telecommunications reference frequencies. The output clock is phase locked to an 8kHz (frame rate) input reference clock. The MK2059-01 also provides jitter attenuation. Included in the selection of output frequencies are these common system clocks: 1.544 MHz (T1) 2.048 (E1) 19.44 MHz (OC-3) 16.384 MHz (8x E1) This monolithic IC, combined with an external inexpensive quartz crystal, can be used to replace a more costly hybrid VCXO retiming module. Through selection of external loop filter components, the PLL loop bandwidth and damping factor can be tailored to meet input clock jitter attenuation requirements. A loop bandwidth down to the Hz range is possible


  • Generates T1, E1, OC-3 and other common telecom clock frequencies from an 8kHz frame clock
  • Configurable jitter attenuation characteristics, excellent for use as a Stratum source de-jitter circuit
  • 2:1 Input MUX for input reference clocks
  • VCXO-based clock generation offers very low jitter and phase noise generation
  • Output clock is phase and frequency locked to the selected input reference clock
  • Fixed input to output phase relationship (except for 1.544 MHz and 2.048 MHz output selections)
  • +115ppm minimum crystal frequency pullability range, using recommended crystal
  • Industrial temperature range
  • Low power CMOS technology
  • 20 pin SOIC package
  • Single 3.3V power supply
  • Pb (lead) free package

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)Output Skew (ps)Phase Jitter Typ RMS (ps)Phase Jitter Max RMS (ps)
1LVCMOS1.544000 - 25.9200000.0080002LVCMOS13.33.3170.000

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
MK2059-01SILFLast Time BuyPSG20SOIC20IYesTubeCheck Availability
MK2059-01SILFTRLast Time BuyPSG20SOIC20IYesReelCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
MK2059-01 Datasheet Datasheet PDF 265 KB May 17, 2010
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-841 Pullable Crystal Selection and VCXO Tuning Application Note PDF 248 KB Sep 23, 2014
AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
show all (19)
AN-848 VCXO - Crystal Selection Application Note PDF 138 KB May 14, 2014
AN-849 Loop Filter Component Selection for VCXO Based PLLs Application Note PDF 132 KB May 14, 2014
AN-847 VCXO - Absolute Pull Range Application Note PDF 70 KB May 13, 2014
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-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 5, 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-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
AN-800 Approved VCXO Crystals Application Note PDF 63 KB Jan 28, 2014
AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 2014
Using IDT's Integrated VCXO Products MAN05 Application Note PDF 69 KB Jun 6, 2012
PDN# : MM-15-05 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 531 KB Nov 13, 2015
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013
PCN# : A1208-01R1 Gold to Copper Wire Product Change Notice PDF 254 KB Dec 21, 2012
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