The ZL30416 accepts a CMOS compatible reference at 19.44 MHz or a differential LVDS, LVPECL or CML reference at 19.44 or 77.76 MHz and generates a differential LVPECL output clock selectable to 19.44, 38.88, 77.76, 155.52 or 622.08 MHz and a singleended CMOS clock at 19.44 MHz. The ZL30416 provides a lock indication.