from authorized vendors, as it is the "industry standard" original design blog.heypete.com wiring diagram for connecting these chips to a specific microcontroller? MAX3238: Csompare to SP3232 - Interface forum - TI E2E
They share identical pinouts, making them "drop-in" replacements for each other in most PCB layouts. The "Exclusive" Differences sp3232+vs+max3232+exclusive