ICS843252-04

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 ambient operating temperature Industrial temperature information available upon request Available in both standard and lead-free compliant packages GENERAL DESCRIPTION The ICS843252-04 is a 10Gb/12Gb Ethernet Clock Generator and a member of the HiPerClockS™ HiPerClocks TM family of high perfor mance devices from ICS. The ICS843252-04 can synthesize 10 Gigabit Ethernet and 12 Gigabit Ethernet with a 25MHz crystal. It can also generate SATA and 10Gb Fibre Channel reference clock frequencies with the appropriate choice of crystals. The ICS843252-04 has excellent phase jitter performance and is packaged in a small 16-pin TSSOP, making it ideal for use in systems with limited board space. IC S CONFIGURATION TABLE Crystal Frequency (MHz) 25 25 WITH 25MHZ CRYSTAL Inputs VCO Frequency (MHz) 750 625 Feedback Divide 30 25 WITH N Output Divide 4 4 Output Frequency (MHz) 187.5 156.25 Application 12 Gigabit Ethernet 10 Gigabit Ethernet CONFIGURATION TABLE Crystal Frequency (MHz) 20 21.25 2...