Product Overview
This compact CAN bus communication module utilizes the industry-standard MCP2551 high-speed CAN transceiver, allowing seamless integration between microcontrollers and CAN networks. Ideal for automotive diagnostics, industrial automation, robotics, and IoT systems, it enables robust CAN communication at rates up to 1 Mb/s and supports both 12 V and 24 V vehicle systems
Electrical Specifications
Feature | Specification |
|---|---|
| Supply Voltage (VDD) | 4.5 – 5.5 V (5 V typical) |
| CAN Bus Voltage Range | Compatible with 12 V/24 V bus systems |
| Data Rate | Up to 1 Mb/s |
| Driver Load | Drives ≥45 Ω, supports up to 112 nodes |
| RS (Slope Control) Mode | Externally adjustable for reduced EMI |
| Operating Temperature | Industrial: –40 °C to +85 °C; Extended: up to +125 °C |
Advanced Protection Features
- Ground-fault detection: Locks TXD if a dominant permanent fault is detected
- Power-on reset and brown-out detection to prevent bus interference
- Standby mode: Low-current draw without bus interference during power loss
- Short-circuit & high-voltage transient protection on CANH/CANL lines
- Thermal shutdown: Automatic disable if junction exceeds ~165 °C
Module Details & Interfaces
- Transceiver: MCP2551 in SOIC‑8 or DIP‑8 package
- Typical Module Size: ~19 × 16 × 3 mm; Weight ≈ 5 g
- Input Pins: VCC (3.3–5 V), GND, TXD (MCU → CAN), RXD (CAN → MCU), CANH, CANL
- Stand-alone or Combined: Often part of CAN controller/transceiver modules (e.g., with MCP2515 SPI or I²C interfaces)
Recommended Use Cases
- Adding CANbus capabilities to microcontroller projects (e.g., automotive ECUs, industrial sensors)
- Reliable automotive diagnostics, fleet monitoring, or OBD-II interfacing
- Creating CAN network test tools or monitoring vehicles and machinery
- Ideal for embedded systems, PLCs, robotics, and networked microcontroller applications
Quick Specs Table
Feature | Specification |
|---|---|
| IC Transceiver | MCP2551 (SOIC‑8 / DIP‑8) |
| Supply Voltage (V<sub>DD</sub>) | 4.5 – 5.5 V |
| CAN Bus Voltage | 12 V / 24 V compatible |
| Data Rate | Up to 1 Mb/s |
| Node Capability | Up to 112 nodes |
| Slope Control (RS pin) | External resistor control |
| Protection | Ground-fault, brown-out, over-voltage, thermal |
| Operating Temp Range | –40 °C to +85 °C (+125 °C extended) |
| Board Size / Weight | ≈ 19 × 16 × 3 mm / ~5 g |
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