The SN65HVD230DR from Texas Instruments is the classic 3.3V CAN transceiver, running half-duplex CAN at data rates up to 1 Mbps from a 3V to 3.6V supply in the standard 8-SOIC package. It has been the workhorse interface for 3.3V microcontrollers — STM32, EFM32, MSP430 and similar — that need to talk on a CAN bus: the device drives the differential CANH/CANL pair directly off the 3.3V rail, so no separate 5V transceiver supply is required. The 100 mV receiver hysteresis is on the generous side and gives solid, glitch-free reception across unterminated or lightly loaded segments, and the -40°C to +85°C rating covers most commercial and light-industrial nodes. With a 1/1 driver/receiver ratio and half-duplex wiring, it is a straightforward two-wire CAN node.
The SN65HVD230DR is found everywhere in CAN-based control: 3.3V MCU development boards, motor controllers, e-bike and scooter controllers, battery BMS gateways, automotive aftermarket modules, and industrial CANopen nodes. When you select it, verify the bus supply — since the part is 3.3V-only, the 5V used in some classic CAN designs must be handled separately — and check whether your application needs the extended temperature or standby behavior of a sibling such as the SN65HVD233DR, which extends the rating to +125°C. Also confirm the DR suffix for tape-and-reel 8-SOIC delivery. If you are on a 3.3V CAN design and want the de-facto reference part with huge availability and community design-in knowledge, the SN65HVD230DR is the safe, proven baseline.