Hi,
Reviewing the datasheet for the SN65HVD234 the bus output voltages are defined with a load specified in figure 12 & 14. This load appears to be 60Ohms+/-1% or 55Ohms +/-1% rather than as specified in ISO11898-2:2016 table 2 which defines the test condition to be RL = 50Ohms to 65Ohm.
Is there a reason why the tested load conditions were chosen for this test rather than the worst-case ISO spec loads, are they just typical values?
Also, there is no figure given on the datasheet for the Differential voltage on effective resistance during arbitration RL= 2240Ohms. Is compliance to the specification range 1.5V - 5V implied by the maximum loaded differential voltage and the fact that the supply rail of 3.3V limits the output to well under 5V?
Best Regards,
Dan