2 channel multiplexer

how to implement a system that emulates a 4053 or analog 2-channel multiplex with arduino uno
Thank you very much

Bad Forum, please move this question to english Forum.

It´s impossible to emulete 4053 with arduino, because arduino don't have analog output.
You need a DUE for instance. It has two analog outputs, so you can emulate 2 4053 switches.