The CDCE18005 is a high performance clock generator and distributor featuring a high degree of configurability via a SPI interface, and programmable start up modes determined by on-board EEPROM. Specifically tailored for buffering clocks for data converters and high-speed digital signals, the CDCE18005 achieves low additive jitter in the 50 fs range. The clock distribution block includes five individually programmable outputs that can be configured to provide different combinations of output formats (LVPECL, LVDS, LVCMOS). Each output can also be programmed to a unique output frequency (up to 1.5 GHzGHz) and skew relationship via a programmable delay block. If all outputs are configured in single-ended mode (e.g. LVCMOS), the CDCE18005 supports up to ten outputs. Each output can select one of three clock input sources. The input block includes two universal differential inputs which support frequencies up to 1500 MHz and an auxiliary single ended input that can be connected to a CMOS level clock or configure to connect to an external crystal via and onboard oscillator block.