I would like to isolate digital serial communication between 2 circuits. I don't know much about the protocol between two circuits. It is not a common protocol such as SPI or I2C. Shortest pulses are 30μs and communication is bidirectional over a single channel/wire. I have found some such as Si860x series. https://www.silabs.com/documents/public/data-sheets/Si860x.pdf
All of such isolators are labeled as I2C isolators. But my serial communication isn't I2C. I wonder if there are any isolators for general usage or if I can use it for my application?
Background: I am trying to power my DSLR camera without the battery (but with a constant power source). But the camera verifies the battery with some serial communication. I am trying to fool the camera's circuit in which I will let the battery communicate with the camera over an isolator, while the camera is powered with another power source. For this, I think, I need a bidirectional isolator.