Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
Hi Mike,
First Question: Yes you need not have to add bias resistors for ISO3086 as the device has internal biasing when cable is disconnected. Yes 120Ω resistor is needed on both ends of the cable for termination per RS-485 requirement and impedance matching…