Hi,
I am doing a noise test on a device using SN65HVD3083E device.
I attach a circuit diagram.
Since there is only one communication partner, it performs one-to-one communication.
For noise, noise superimposed from the AC 100 V power supply line, noise radiated from the air around the device.
It is the result that data loss often occurs due to the influence of noise.
I added 10kΩ to the red circle in the circuit diagram.
In this case, the influence of noise is reduced.
It is probably because the impedance on the line decreases and resistance to noise increases.
Although I would like to implement this countermeasure, the SN65HVD3083E has a fail-safe function, which may affect the fail-safe function.
I want to ask you a question.
When adding pull-up and pull-down without affecting the fail-safe function, what resistance Ω can be added?
Best Regards,
