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673-01 - Block Diagram
673-01 - Pinout


PLL Building Block

The 673-01 is a low cost, high performance Phase Locked Loop (PLL) designed for clock synthesis and synchronization. Included on the chip are the phase detector, charge pump, Voltage Controlled Oscillator (VCO), and two output buffers. One output buffer is a divide by two of the other. Through the use of external reference and VCO dividers (the 674-01), the user can customize the clock to lock to a wide variety of input frequencies. The 673-01 also has an output enable function that puts both outputs into a high-impedance state. The chip also has a power down feature which turns off the entire device. For applications that require low jitter or jitter attenuation, see the MK2069. For a smaller package, see the 663.


  • Packaged in 16 pin SOIC (Pb-free, ROHS compliant)
  • Access to VCO input and feedback paths of PLL
  • VCO operating range up to 120 MHz (5V)
  • Able to lock MHz range outputs to kHz range inputs through the use of external dividers
  • Output Enable tri-states outputs
  • Low skew output clocks
  • Power Down turns off chip
  • VCO predivide to feedback divider of 1 or 4
  • 25 mA output drive capability at TTL levels
  • Advanced, low power, sub-micron CMOS process
  • Single supply +3.3 V or +5 V ±10% operating voltage
  • Industrial temperature range available
  • Forms a complete PLL, using the 674-01
  • For better jitter performance, please use the MK1575

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)
2LVCMOS0.250000 - 120.0000000.001000 - 8.0000001LVCMOS23.3, 53.3, 5

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
673M-01ILFLast Time BuyDCG16SOIC16IYesTubeCheck Availability
673M-01ILFTLast Time BuyDCG16SOIC16IYesReelCheck Availability
673M-01LFLast Time BuyDCG16SOIC16CYesTubeCheck Availability
673M-01LFTLast Time BuyDCG16SOIC16CYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
673-01 Datasheet Datasheet PDF 79 KB Apr 11, 2011
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 13, 2014
show all (18)
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 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-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 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-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 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-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 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
PDN# : MM-15-05 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 531 KB Nov 13, 2015
PCN# : A1208-01R1 Gold to Copper Wire Product Change Notice PDF 254 KB Dec 21, 2012
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil Product Change Notice PDF 223 KB Oct 6, 2006