The ICS650-14B is a low cost, low jitter, high performance clock synthesizer customized for networking systems applications. Using analog Phase-Locked Loop (PLL) techniques, the device accepts a 25.0 MHz clock or fundamental mode crystal input to produce multiple output clocks of one fixed 25.0 MHz, a four (plus one) frequency selectable bank, and two frequency selectable clocks. All output clocks are frequency locked together. The ICS650R-14B outputs all have 0 ppm synthesis error.