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PRELIMINARY
Integrated Circuit Systems, Inc.
www.DataSheet4U.com
ICS843023
FEMTOCLOCKS™ CRYSTAL-TO3.3V, 250MHZ LVPECL CLOCK GENERATOR
FEATURES
• 1 differential 3.3V LVPECL output • Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal • Maximum output frequency: 250MHz, using a 25MHz crystal • VCO range: 490MHz - 640MHz • RMS phase jitter @ 250MHz, using a 25MHz crystal (12KHz - 20MHz): 0.33ps (typical) • 3.3V operating supply • 0°C to 70°C ambient operating temperature
GENERAL DESCRIPTION
The ICS843023 is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM HiPerClockS™ family of high performance devices from ICS. The ICS843023 uses a 25MHz crystal to synthesize 250MHz. The ICS843023 has excellent phase jitter performance, over the 1.