The ADG508A and ADG509A are CMOS monolithic analog multiplexers with eight channels and dual four channels， respectively. The ADG508A switches one of eight inputs to a common output， depending on the state of three binary addresses and an enable input. The ADG509A switches one of four differential inputs to a common differential output， depending on the state of two binary addresses and an enable input. Both devices have TTL and 5 V CMOS logic-compatible digital inputs. The ADG508A and ADG509A are designed on an enhanced LC2 MOS process that gives an increased signal capability of VSS to VDD and enables operation over a wide range of supply voltages. The devices can comfortably operate anywhere in the 10.8 V to 16.5 V single- or dual-supply range. These multiplexers also feature high switching speeds and low RON..