Supply rail and bus timing
The SN65HVD32DG4: The single driver and single receiver pair (1/1 configuration) suits point-to-point or multi-drop RS485 networks where the bus master talks and one slave replies. At 1 Mbps, the propagation delay budget leaves margin for a few meters of cable before the round-trip timing closes the window for collision detection or token passing.
Temperature range and deployment context
The 8-SOIC package's thermal impedance (junction-to-ambient ~120°C/W typical) keeps the die within limits at the 1 Mbps switching rate with a 3.6V supply.