The MAX3610 is a low-jitter, high-performance, dual-rate clock generator optimized for 1Gbps/2Gbps/4Gbps Fibre-Channel applications. When connected with an external AT-cut crystal, the device generates a precision clock output by integrating a crystal oscillator with Maxim's low-noise phase-locked loop (PLL) providing a low-cost solution. By coupling Maxim's low-noise PLL design featuring a low-jitter generation VCO with an inexpensive fundamental mode crystal, the MAX3610 provides the optimum combination of low cost, flexibility, and high performance.