The SN65HVD233DR from Texas Instruments is a 3.3V half-duplex CAN transceiver rated for 1 Mbps, packaged in the standard 8-SOIC and specified over the wider -40°C to +125°C temperature range. That extended rating is the key differentiator versus the closely related SN65HVD230DR: both run from a 3V to 3.6V supply, both are 1/1 driver/receiver half-duplex parts with 100 mV receiver hysteresis and 1 Mbps classic-CAN throughput, but the HVD233's +125°C ambient ceiling makes it the better fit when the node sits in a hot enclosure or engine-adjacent machinery. The 100 mV hysteresis keeps the receiver stable on idle or lightly loaded segments, and driving the differential bus directly off the 3.3V rail removes the need for a separate 5V transceiver rail in 3.3V-controller designs.
Typical applications include automotive-adjacent modules, engine and vehicle controllers, high-temperature industrial CANopen devices, solar inverters, and power electronics where ambient heat is the enemy. When you choose between this and the HVD230, the decision is mostly thermal margin: if your worst-case ambient stays comfortably under 85°C, the HVD230 is adequate and usually cheaper; if your board can bake well past that, the HVD233DR gives you headroom without a package or pinout change — both are 8-SOIC half-duplex drop-ins. As with any 3.3V CAN part, verify 5V bus needs are handled separately and confirm termination on long runs. For a 3.3V CAN interface that keeps working in genuinely hot environments, the SN65HVD233DR is a solid, widely stocked choice.