The ICS85356I is a dual 2:1 Differential-to-LVPECL Multiplexer and is a member of the HiPerClockSTM HiPerClockSTM family of High Performance Clock Solutions from ICS. The device has both common select and individual select inputs. When COM_SEL is logic High, the CLKxx input pairs will be passed to the output. When COM_SEL is logic Low, the output is determined by the setting of the SEL0 pin for channel 0 and the SEL1 pin for Channel 1.