The Si5348 combines the industry’s smallest footprint and lowest power network synchronizer clock with unmatched frequency synthe-sis flexibility and ultra-low jitter. The Si5348 is ideally suited for wireless backhaul, IP radio, small and macro cell wireless communica-tions systems, and data center switches requiring both traditional and/or packet based network synchronization. The three independentDSPLLs are individually configurable as a SyncE PLL, IEEE 1588 DCO or a general-purpose PLL for processor or FPGA clocking. TheSi5348 can also be used in legacy SETS systems needing Stratum 3/3E compliance. The optional digitally controlled oscillator (DCO)mode provides precise timing adjustments to 1 ppt for 1588 (PTP) clock steering applications. The Si5348's unique design allows theTCXO/OCXO to be any value up to 250 MHz, simplifying vendor selection and qualification. The Si5348 is programmable via a serialinterface with in-circuit programmable non-volatile memory so it always powers up into a known configuration.