Technical notes, layout decisions, and design reviews filed under Industrial Interfaces.
RS-485 PCB design guidance: 120 ohm termination, fail-safe biasing, the common-mode budget, galvanic isolation and the checks to run before release.
CAN bus PCB design in practice: where 120 ohm termination goes, what split termination does, where ESD protection belongs and why the ground reference is a layout decision.
Tell us the layer count, the interfaces, and where the board has to survive. We will come back with an architecture view, a timeline, and a clear budget.
