The MC10159 is a quad two channel multiplexer with enable. It incorporates common enable and common data select inputs. The select input determines which data inputs are enabled. A high (H) level enables data inputs D00, D10, D20, and D30. A low (L) level enables data inputs D01, D11, D21, and D31. Any change on the data inputs will be reflected at the outputs while the enable is low. Input levels are inverted at the output.