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ICS843252 Datasheet

Part Number ICS843252
Manufacturers ICST
Logo ICST
Description CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
Datasheet ICS843252 DatasheetICS843252 Datasheet (PDF)

www.DataSheet4U.com PRELIMINARY Integrated Circuit Systems, Inc. ICS843252 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER FEATURES • Two 3.3V differential LVPECL output pairs • Using a 19.53125MHz or 25MHz crystal, the two output banks can be independently set for 625MHz, 312.5MHz, 156.25MHz or 125MHz • Crystal oscillator interface • VCO range: 490MHz to 680MHz • RMS phase jitter @ 156.25MHz (1.875MHz - 20MHz): 0.47ps (typical) • Full 3.3V supply mode • 0°C to 70°C ambient operatin.

  ICS843252   ICS843252






Part Number ICS843256
Manufacturers ICST
Logo ICST
Description CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
Datasheet ICS843252 DatasheetICS843256 Datasheet (PDF)

www.DataSheet4U.com PRELIMINARY Integrated Circuit Systems, Inc. ICS843256 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER FEATURES • Six LVPECL outputs • Crystal oscillator interface • Output frequency range: 53.125MHz to 333.3333MHz • Crystal input frequency range: 25MHz to 33.333MHz • RMS phase jitter at 125MHz, using a 25MHz crystal (1.875MHz to 20MHz): 0.33ps (typical) • Full 3.3V or 3.3V core, 2.5V output supply mode • 0°C to 70°C ambient operating t.

  ICS843252   ICS843252







Part Number ICS843252-04
Manufacturers ICST
Logo ICST
Description CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
Datasheet ICS843252 DatasheetICS843252-04 Datasheet (PDF)

www.DataSheet4U.com PRELIMINARY Integrated Circuit Systems, Inc. ICS843252-04 FEMTOCLOCKS™ CRYSTAL-TO3.3V LVPECL CLOCK GENERATOR FEATURES • Two differential 3.3V LVPECL output • Crystal oscillator interface designed for 18pF parallel resonant crystals • Crystal input frequency range: 19.33MHz - 30MHz • Output frequency range: 145MHz - 187.5MHz • VCO frequency range: 580MHz - 750MHz • RMS phase jitter at 156.25MHz (1.875MHz - 20MHz): 0.39ps (typical) • 3.3V operating supply • 0°C to 70°C ambie.

  ICS843252   ICS843252







Part Number ICS843251I-12
Manufacturers ICST
Logo ICST
Description LVPECL CLOCK GENERATOR
Datasheet ICS843252 DatasheetICS843251I-12 Datasheet (PDF)

www.DataSheet4U.com PRELIMINARY Integrated Circuit Systems, Inc. ICS843251I-12 FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR FEATURES • One Differential LVPECL output • Crystal oscillator interface, 18pF parallel resonant crystal (23.2MHz - 30MHz) • Output frequency range: 290MHz - 750MHz • VCO range: 580MHz - 750MHz • RMS phase jitter @ 312.5MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.36ps (typical) • 3.3V or 2.5V operating supply • -40°C to 85°C ambient operating temperature.

  ICS843252   ICS843252







Part Number ICS843251-04
Manufacturers ICST
Logo ICST
Description CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
Datasheet ICS843252 DatasheetICS843251-04 Datasheet (PDF)

www.DataSheet4U.com PRELIMINARY Integrated Circuit Systems, Inc. ICS843251-04 FEMTOCLOCKS™ CRYSTAL-TO3.3V LVPECL CLOCK GENERATOR FEATURES • 1 differential 3.3V LVPECL output • Crystal oscillator interface designed for 18pF parallel resonant crystals • Crystal input frequency range: 19.33MHz - 30MHz • Output frequency range: 145MHz - 187.5MHz • VCO frequency range: 580MHz - 750MHz • RMS phase jitter at 156.25MHz (1.875MHz - 20MHz): 0.39ps (typical) • 3.3V operating supply • 0°C to 70°C ambient.

  ICS843252   ICS843252







CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

www.DataSheet4U.com PRELIMINARY Integrated Circuit Systems, Inc. ICS843252 FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER FEATURES • Two 3.3V differential LVPECL output pairs • Using a 19.53125MHz or 25MHz crystal, the two output banks can be independently set for 625MHz, 312.5MHz, 156.25MHz or 125MHz • Crystal oscillator interface • VCO range: 490MHz to 680MHz • RMS phase jitter @ 156.25MHz (1.875MHz - 20MHz): 0.47ps (typical) • Full 3.3V supply mode • 0°C to 70°C ambient operating temperature • Industrial temperature available upon request • Available in both standard and lead-free RoHS-compliant packages GENERAL DESCRIPTION The ICS843252 is a 2 differential output LVPECL Synthesizer designed to generate Ethernet referHiPerClockS™ ence clock frequencies and is a member of the HiPerClocks™ family of high performance clock solutions from ICS. Using a 19.53125MHz or 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the settings of 4 frequency select pins (SEL[A1:A0], SEL[B1:B0]): 625MHz, 312.5MHz, 156.25MHz, and 125MHz. IC S The two banks have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The ICS843252 ICS’ 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernet jitter requirements. The ICS843252 is packaged in a small 16-pin TSSOP package. BLOCK DIAGRAM SELA[0:1} Pullup 2 00 01 10 11 00 01.


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