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M665 - Block Diagram
M665 - Pinout


Dual Saw, Selectable Frequency VCSO

The M665 is a dual SAW, selectable frequency VCSO frequency source for low-jitter clock generation. An integrated SAW (surface acoustic wave) delay line implements the high-Q VCO (voltage controlled oscillator) function, which results in low output phase noise and very low jitter. The M665-01 is available in a range of center frequencies from 125 to 177 MHz. The M665-02 provides 500 to 708 MHz. Guaranteed minimum pull-range of ±120 ppm meets GbE requirements. (It also fully satisfies ±50 ppm minimum pull-range specification commonly required.) Industrystandard Kvco (VCO Gain) provides full replacement compatibility. The M665 is well suited for phase-locked loop implementations, clock and data recovery circuits, and other timing applications in telecom and optical fiber networking systems (e.g., OC-48).


  • Two integrated SAW devices and selectable output frequency
  • supports multi-rate optical interfaces
  • M665-01 output frequencies from 125 to 177 MHz M665-02 output frequencies from 500 to 708 MHz (Specify center frequencies at time of order)
  • Industry-standard Kvco for full compatibility
  • Low phase jitter 0.2ps rms typical for the M665-02 (50kHz to 80MHz)
  • Differential 3.3V LVPECL output
  • Single 3.3V power supply
  • Small 9 x 14mm SMT (surface mount) package
  • Compliant to EC RoHS Directive: SMT (6 of 6)
  • J-Lead (5 of 6)

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Supply Voltage (V)Phase Jitter Typ RMS (ps)Freq. Stability Total (± PPM)
1LVPECL622.080000, 644.531300, 666.514300, 669.326600, 693.4830003.300.160100

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
M665-02-AA-ADObsoleteCE6CLCC6IYesTubeCheck Availability
M665-02-AA-ADTObsoleteCE6CLCC6IYesReelCheck Availability
M665-02-AA-AEObsoleteCE6CLCC6IYesTubeCheck Availability
M665-02-AA-AEJObsoleteCJ6CLCC6IYesTubeCheck Availability
M665-02-AA-AEJTObsoleteCJ6CLCC6IYesReelCheck Availability
M665-02-AA-AETObsoleteCE6CLCC6IYesReelCheck Availability
M665-02-AA-AHObsoleteCE6CLCC6IYesTubeCheck Availability
M665-02-AA-AHJObsoleteCJ6CLCC6IYesTubeCheck Availability
M665-02-AA-AHJTObsoleteCJ6CLCC6IYesReelCheck Availability
M665-02-AA-AHTObsoleteCE6CLCC6IYesReelCheck Availability
M665-02-AD-ALObsoleteCE6CLCC6IYesTubeCheck Availability
M665-02-AD-ALJObsoleteCJ6CLCC6IYesTubeCheck Availability
M665-02-AD-ALJTObsoleteCJ6CLCC6IYesReelCheck Availability
M665-02-AD-ALTObsoleteCE6CLCC6IYesReelCheck Availability
M665-02-AE-AHObsoleteCE6CLCC6IYesTubeCheck Availability
M665-02-AE-AHTObsoleteCE6CLCC6IYesReelCheck Availability
M665-02-AH-ADObsoleteCE6CLCC6IYesTubeCheck Availability
M665-02-AH-ADTObsoleteCE6CLCC6IYesReelCheck Availability
M665-02-AH-ALObsoleteCE6CLCC6IYesTubeCheck Availability
M665-02-AH-ALTObsoleteCE6CLCC6IYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013
PDN# : Z-13-01 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 71 KB Mar 19, 2013