CAN to TTL Module (SN65HVD230DR) – High-Speed CAN Bus Transceiver ESP32

Product Description

🚌 CAN to TTL Module (SN65HVD230DR) – High-Speed CAN Bus Transceiver ✨ Stable • Fast • Easy to Use Perfect for ESP32 (TWAI/CAN), STM32 (bxCAN/FDCAN), Arduino + CAN controller, robotics, and automotive CAN projects. ✅ Highlights 🔧 SN65HVD230DR Inside – Texas Instruments CAN transceiver for rock-solid bus comms ⚡ 1 Mbps CAN – Reliable high-speed differential signaling (CANH/CANL) 🔄 3.3V/5V Logic Friendly – Works with common MCU levels (power at 3.3V recommended) 🛡️ Protection Built-In – ESD/short-circuit/thermal protection, strong anti-interference 💤 Low-Power Standby – RS pin enables slope-control / low-current mode 🧩 Compact PCB – Easy drop-in with labeled pins & mounting holes (varies by batch) Features 🧷 True CAN Transceiver: Converts MCU TX/RX (logic) ↔ CANH/CANL differential bus 🧭 Wide CAN Bus Range: Supports long wiring with proper termination (120 Ω) 🎚️ RS (Slope Control): Reduce EMI on noisy lines / enter standby to save power 🧲 Fail-Safe: Dominant/ recessive fail-safe, bus-fault tolerance 🔌 Clear Pin Labels: VCC, GND, TXD, RXD, CANH, CANL, RS (naming may vary: TX/RX or D/R) 🧪 Tested With: ESP32 TWAI, STM32 bxCAN/FDCAN (with controller), Teensy, etc. 🔔 Note: This is a transceiver, not a CAN controller. Use with MCUs that have a CAN controller (e.g., ESP32 TWAI, STM32) or pair with an external controller (e.g., MCP2515) if your board lacks native CAN. 📐 Specs Transceiver IC: TI SN65HVD230DR CAN Speed: up to 1 Mbps Logic Levels: 3.3V (tolerant interface; works with 3.3V or level-shifted 5V MCUs) Supply Voltage (VCC): 3.3V recommended (some modules accept 5V—check silk/marking) Bus Lines: CANH / CANL (ISO-11898 compliant signaling) Pins: VCC, GND, TXD (MCU TX), RXD (MCU RX), RS (slope/standby), CANH, CANL Protection: ESD, thermal shutdown, short-circuit (transient tolerant) Termination: External 120 Ω required at each bus end (jumper/resistor not always populated) Dimensions: ~28–30 × 14–16 mm (varies slightly by batch) Weight: ~3–4 g 🧰 Applications 🚗 Automotive & ECU Prototyping – Read/write CAN frames, gateway projects 🤖 Robotics / AGV – Reliable multi-node communication 🏭 Industrial Control – Sensor/actuator networks, PLC interfacing 📡 IoT / Data Logging – Telemetry, diagnostics, dashboards Typical Wiring (ESP32 with TWAI/CAN) VCC → 3.3V, GND → GND TXD → ESP32 TX pin of TWAI (e.g., GPIO TX) RXD → ESP32 RX pin of TWAI (e.g., GPIO RX) RS → GND for normal mode (or via resistor for slope control) CANH/CANL → CAN bus 📝 Tips ✅ Keep twisted pair for CANH/CANL, and star-topology is not recommended—use linear bus. ✅ Ensure common ground between nodes. ✅ This module = Transceiver only (physical layer). Needs MCU with built-in CAN controller. 📦 Package Includes 1× CAN to TTL Module (SN65HVD230DR) 1× Pin header (unsoldered)