The 859S0424I is a 4:4 Differential-to-LVPECL/ LVDS Clock Multiplexer which can operate up to 3GHz. The outputs for this device can either be programmed to give LVPECL or LVDS levels. The 859S0424I has four selectable differential PCLKx, nPCLKx clock inputs. The PCLKx, nPCLKx input pairs can accept LVPECL, LVDS or CML levels. The fully differential architecture and low propagation delay make it ideal for use in clock distribution circuits.