What this CAN transceiver does and where it goes
The 125 mV of receiver hysteresis cleans up a noisy bus line, so you get fewer false start-of-frame detections on a long harness with motor drives or solenoids switching nearby. That matters more than the headline data rate for most field installations — the bus stays reliable even when the environment is electrically rough.
The CAN controller side expects 5 V logic levels; if your MCU runs on 3.3 V, you will need a level shifter or a 5 V-tolerant I/O pin on the controller side. The bus pins are differential and tolerate common-mode voltages well beyond the supply, but the VCC pin and the logic interface are strictly 5 V territory.
Package and field-swap reality
No hot-air station needed — a fine-tip iron and some flux will get this swapped on site. The pin 1 indicator is clearly marked on the package top, so orientation is one look and go. This is a part you can carry in a field kit and replace without a lab bench.