ICS843301I-108

PRELIMINARY FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V LVPECL 75MHZ FREQUENCY SYNTHESIZER W/SSC ICS843301I-108 GENERAL DESCRIPTION The ICS843301I-108 is a 75MHz Frequency IC S Generator and a member of the HiPerClocks TM HiPerClockS™ family of high perfor mance devices from IDT. The ICS843301I-108 uses a 20MHz crystal to synthesize 75MHz output. The device supports 0.5% downspread spread spectrum clocking. The ICS843301I108 has excellent <1ps phase jitter performance, over an integration range of 900kHz - 7.5MHz. The device is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space. FEATURES One differential 3.3V or 2.5V LVPECL output Crystal oscillator interface designed for 20MHz, 18pF parallel resonant crystal Output frequency: 75MHz Supports SSC, 0.5% downspread RMS phase jitter @ 75MHz, using a 20MHz crystal (900kHz - 7.5MHz): 0.73ps (typical) Full 3.3V or 2.5V operating supply -40°C to 85°C ambient operating temperature Available in both standard (RoHS 5) and lead-free (RoHS 6) packages SSC FUNCTION TABLE www.DataSheet4U.com Input SSC Mode SSC Off 0.5% Downspread 0 (default) 1 BLOCK DIAGRAM 20MHz XTAL_IN PIN ASSIGNMENT VCCA VEE XTAL_OUT XTAL_IN 1 2 3 4 8 7 6 5 VCC Q nQ SSC PLL Phase Detector VCO 600MHz OSC XTAL_OUT N Div ÷8 Q nQ ICS843301I-108 8-Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body G Package Top View SSC Pulldown M Div ÷30 The Preliminary Information presented herein represents a product in pre-...