FemtoClock® Crystal-to-3.3V LVPECL Frequency Synthesizer

GENERAL DESCRIPTION The 8430252I-45 is a 2 output LVPECL and LVCMOS/LVTTL Synthesizer optimized to generate Ethernet reference clock frequencies. Using a 25MHz, 18pF parallel resonant crystal, the following fre-quencies can be generated: 156.25MHz LVPECL output and, 125MHz LVCMOS output. The

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FemtoClock Crystal-to-3.3V LVPECL Frequency Synthesizer

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FemtoClock® Crystal-to-3.3V LVPECL Frequency Synthesizer

The 8430252I-45 is a 2 output LVPECL and LVCMOS/LVTTL Synthesizer optimized to generate Ethernet reference clock frequencies. Using a 25MHz, 18pF parallel resonant crystal, the following fre-quencies can be generated: 156.25MHz LVPECL output and, 125MHz LVCMOS output. The 8430252I- 45 uses IDT's 3RD ·One differential 3.3V LVPECL output and One LVCMOS/LVTTL output\n·Crystal oscillator interface designed for a 25MHz, 18pF parallel resonant crystal\n·A 25MHz crystal generates both an output frequency of 156.25MHz (LVPECL) and 125MHz (LVCMOS)\n·VCO frequency: 625MHz\n·RMS phase jitter @ 156.25MHz (;

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