The ZL40234 is a pin configurable low additive jitter, low power 3 x 4 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. The ZL40234 has four LVPECL/HCSL/LVDS outputs in two banks and each bank can independently be powered from 3.3V or 2.5V supply. Differential outputs can be set to be LVPECL, LVDS, HCSL or Hi-Z via control OUTTYPESEL0/1 pins. The device operates from 2.5V+/-5% or 3.3V+/-5% supply. Its operation is guaranteed over the industrial temperature range -40°C to +85°C.