The ICS843003 is a 3 differential output LVPECL Synthesizer designed to generate Ethernet referHiPerClockSTM ence clock frequencies and is a member of the HiPerClocksTM family of high performance clock solutions from ICS. Using a 31.25MHz or 26.041666MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the settings of 4 frequency select pins (DIV_SEL[A1:A0], DIV_SEL[B1:B0]): 625MHz, 312.5MHz, 156.25MHz, and 125MHz. The 843003 has 2 output banks, Bank A with 1 differential LVPECL output pair and Bank B with 2 differential LVPECL output pairs.