The ZL40230 is a programmable or hardware pin controlled low additive jitter, low power 3 x 10 LVPECL/HCSL/LVDS fanout buffer. Two inputs can accept signal in differential (LVPECL, SSTL, LVDS, HSTL, CML ) or single ended (LVPECL or LVCMOS) format and the third input can accept a single ended signal or it can be used to build a crystal oscillator by connecting an external crystal resonator between its XIN and XOUT pins. All the other components for building crystal oscillator are built in device such as load capacitance, series and shunt resistors. The ZL40230 has ten LVPECL/HCSL/LVDS outputs which can be powered from 3.3V or 2.5V supply. Each output can be independently enabled/disabled via SPI bus. The type of each output driver can be programmed to be LVPECL, HCSL or LVDS. Hence, the device can be configured to support different signaling formats depending on the application.