ICS844S0258-07

FemtoClock® Crystal/LVCMOS-toLVDS/LVCMOS Frequency Synthesizer ICS844S0258-07 DATASHEET General Description The ICS844S0258-07 is an eight output synthesizer optimized to generate Gigabit and 10 Gigabit Ethernet clocks. Using a 25MHz, 18pF parallel resonant crystal, the device will generate 125MHz clocks with mixed LVDS and LVCMOS/ LVTTL output levels. ICS844S0258-07 uses IDT’s 3rd generation low phase noise VCO technology and can achieve <1ps typical RMS phase jitter, easily meeting Ethernet jitter requirements. ICS844S0258-07 is packaged in a small, 32-pin VFQFN package that is optimum for applications with space limitations. Features Seven LVDS differential output at 125MHz One LVCMOS/LVTTL single-ended outputs at 125MHz Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input and PLL bypass from a single select pin Output enable signal for three LVDS outputs RMS phase jitter @ 125MHz, using a 25MHz crystal (1.857MHz - 20MHz): 0.278ps (typical...