Waveshare SN65HVD230 CAN Bus Transceiver Module

SKU: FA2046-4
Main Transceiver

TI SN65HVD230
Operating Voltage

3.3V DC
Logic Compatibility

3.3V (LVTTL)
Max Speed

1 Mbps
Common Mode Range

-2V to 7V
ESD Protection

±16kV (Human Body Model)
Nodes per Bus

Supports up to 120 nodes on a single bus
Dimensions

~28mm x 11mm
Product Description
The Waveshare SN65HVD230 CAN Board is a high-performance accessory designed to provide microcontrollers with a robust Controller Area Network (CAN) interface. Powered by the specialized SN65HVD230 transceiver chip, this module is specifically engineered for 3.3V systems, making it the ideal choice for modern controllers like the STM32, Raspberry Pi (with CAN controller), and ESP32.
Unlike standard 5V transceivers, the SN65HVD230 operates efficiently on a 3.3V supply while remaining fully compatible with 5V CAN networks. It features multiple protection modes, including high ESD protection and thermal shutdown, ensuring data integrity in the electrically noisy environments typical of automotive and industrial settings. With its compact form factor and standard pin headers, it allows for rapid integration of CAN communication—the industry standard for high-reliability, long-distance serial networking.
Key Features
  • 3.3V Native Operation: Specifically designed to interface directly with 3.3V microcontrollers without the need for logic level shifters.
  • High-Speed Data Rates: Supports transmission speeds up to 1 Mbps, suitable for real-time control and high-bandwidth telemetry.
  • Robust Circuit Protection: Features integrated ±16kV ESD protection and thermal shutdown circuitry to safeguard against field faults.
  • Interoperability: Fully compatible with ISO 11898 standard 5V CAN transceivers and networks.
  • Three Operating Modes: Supports High-Speed, Slope-Control, and Low-Power Standby modes to balance performance and energy consumption.
  • Low Electromagnetic Emission (EME): Optimized for minimal interference with surrounding sensitive electronics.
Usage & Applications
  • Automotive Systems: Interfacing with vehicle OBD-II ports for engine diagnostics, sensor logging, and telematics development.
  • Industrial Automation: Creating reliable communication links between PLCs, motor drivers, and industrial sensors across factory floors.
  • Robotics (ROS): Standardized communication for robotic arms, drones, and autonomous mobile robots (AMRs) using CAN-based actuators.
  • Building Automation: Managing distributed HVAC, lighting, and security nodes over long distances (up to 1km at lower speeds).
  • Smart Energy: Monitoring battery management systems (BMS) and solar inverters in renewable energy setups
Q: Does this module include a CAN controller?

No. This is a transceiver. You still need a microcontroller with a built-in CAN controller (like an STM32 or ESP32) or an external controller (like an MCP2515) to manage the protocol. The transceiver simply converts the digital logic signals into the differential signals used on the physical CAN bus

Q: Can I use this module with a 5V Arduino Uno?

This module is optimized for 3.3V. While it can communicate with 5V CAN networks, the VCC and logic pins should be connected to a 3.3V source. If using a 5V microcontroller, a logic level shifter on the RX/TX pins is recommended to protect the module.

Q: Does it have a 120Ω termination resistor?

The Waveshare board typically includes pads for a termination resistor. For CAN networks, a 120Ω resistor is required at the two physical ends of the bus to prevent signal reflection

Q: Why is my communication failing over a long cable?

Ensure you are using shielded twisted-pair (STP) cable. At high speeds (1Mbps), cable length should be limited to 40 meters. For longer distances (up to 1km), you must reduce the baud rate accordingly.

Q: What is the "RS" pin used for?

The RS pin (Pin 8) controls the operating mode. Connecting it to GND enables high-speed mode. Connecting it to a resistor to GND enables slope control (to reduce EME), and pulling it HIGH puts the chip into a low-power standby mode

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