This is a single-channel RS-485/RS-422 transceiver running half-duplex at up to 20 Mbps. The 70 mV of receiver hysteresis cleans up noise on long cable runs, which matters when you are pulling signal through a factory floor or a motor drive cabinet.
Industrial temp range, small VSON package
The package is a 10-VSON with an exposed thermal pad (3x3 mm footprint).
Swap it in the field? Yes, with a hot-air station
The 10-VSON is a small QFN-style package with a center pad. No lab bench needed, but you do want a hot-air rework station and a stencil for the pad — a soldering iron alone will not wet the exposed paddle reliably. Orientation is marked with a pin-1 dot, visible under a loupe. If you are carrying a field kit, add a few of these in a cut-tape strip; they take up no space.