Hi,
why a mux? What are the constraints? Since you're posting this in an Altera forum, I assume you have an FPGA or a CPLD, which typically has plenty of I/O pins.
Okay, a mux. If you're not having enough I/O, a mux can solve this. The interwebs are full of instructions; maybe not for your special case, but if you look into pages for Arduino etc., where a lack of sufficient I/O count is much more common, you'll find tons of articles, e.g.:
Just adapt one of those designs to your needs.
Things to consider:
- your FPGA/CPLD board must be designed for the required DC current
- do not violate the absolute maximum DC current per I/O pin
- keep in mind that the supply current for the corresponding VCCIO pin(s) is the sum of all currents, which can be quite a lot
Best regards,
GooGooCluster
Honored Contributor
