The CAN bus has CAN-High and CAN-Low lines. Normally, in the recessive state the voltages are each 2.5 V and in the dominant state the CAN-High line goes to 3.5 V and the CAN-Low line goes to 1.5 V.
How are these voltages actually achieved in the transceiver? What would be the circuit for the sake of understanding (using FETs or transistors or something else)?
In dominant, is that 1 V drop and rise happening in the CAN-High and CAN-Low lines?