The datasheet states the the Driver differential output voltage magnitude is typically 3.5V for differential load resistance of 54 Ohm (minimum value) in table 7.7. It would mean the driver output current is 3.5/54 = 65 mA. However, on section 7.4 - Recommended Operating conditions, the maximum Driver output current is 60mA which is smaller than 65mA. Can you confirm whether 60mA or 54 Ohm is correct?