The 50 mV hysteresis — why it matters for noisy bus lines
The receiver includes 50 mV of hysteresis, which keeps the output from chattering when the differential bus voltage sits near the threshold.
5V supply — not a 3.3V part
The supply range is 4.75V to 5.25V, so this is a 5V-only transceiver. It is not compatible with 3.3V logic rails unless you level-shift the driver enable and data lines. If your system runs on a 3.3V supply, you need a different transceiver such as the SN65HVD3082E or a 3.3V-rated variant. The 5V supply buys you a larger differential output voltage — typically above 1.5V into a 54Ω load — which gives extra noise margin on long cables.