The ICS843404 is a low phase noise Fibre Channel Clock Generator and is a member of HiPerClockSTM the HiPerClockSTM family of high performance clock solutions from ICS. The device provides two banks of one LVPECL output per bank and one bank of two LVDS outputs. Each bank can be independently set by using their respective frequency select pins for the following output frequencies: 318.75MHz, 212.5MHz, 159.375MHz or 106.25MHz, using a 25.5MHz 18pF parallel resonant crystal. The ICS843404 can also be driven from a 25.5MHz single-ended reference clock. For system debug or test purposes, the PLL can be bypassed using the VCO_SEL pin.