Hi ajukrishnan, Welcome to EasyEDA. Is this purely a digital 2:1 multiplexer or is it for analogue signals too? Are you looking for a *schematic circuit diagram* of the internals of a 2:1 digital multiplexer? Like this?  or an analogue part as shown in Figure 1 of: <http://www.onsemi.com/pub_link/Collateral/MC14551B-D.PDF>? Or do you want a schematic *symbol* for one like this?  In either case, you can easily make them up. >For a schematic you can simply draw it using the logic gates from EasyEDA Libs. >For a symbol you can create one as described in the EasyEDA Tutorial here: <https://easyeda.com/Doc/Tutorial/schematicLibs.htm#CreatingtheSchematicLibs> Once you have saved the symbol to **My Parts**, it will be available to everyone via the **Shift+F** library search. :)