Hi Vaibhav,
Do you have any idea which portion of the chip is being damaged? Typically the most common points of failure are the RS-485 signal pins, since these interface to external ports which may allow for over-stresses like ESD events or short-circuits…
Hi Ikoma,
Yes the resistor that you circle is the termination resistor. RS-485 uses 120 ohm differential termination resistors at either end of the bus to ensure communication. Here is are a few links that may help your customer understand some of the…