GENERAL DESCRIPTION

The ICS843252 is a 2 differential output LVPECL Synthesizer designed to generate Ethernet reference 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.

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