Let's say if company A developed an electronic product. A published the product's datasheet on its website free to the public, copyright of the datasheet is owned by A. One part of the datasheet is the schematics of the product.
Is it fair use, if company B develop a digital simulation model (a software program) and make it free to public, that does not contain A's original schematic, but contains rewriting of the schematic into a digital form?