str485 differential output is not as expected , we have followed datasheet to design pcb yet only one signal (non inverted) is showing up as expected in logic anlyser (see attachment)
attaching pcb design for your reference.
Should the outputs A and B have 2 resistors 63ohms each with a centertap capacitor connecting to gnd as used in some evaluation board?
Kindly provide a solution
Thank you
update:
added 20k pullup on A and 20k pulldown on B output line as per failsafe configuration .
