Microchip MCP2551-I/SN CANbus Transceiver, Half-Duplex, 1/1 Drivers/Receivers, 4.5V~5.5V Supply, 200 mV Receiver Hysteresis, -40°C~85°C, 8-SOIC Package, Tube.
| Parameter | Value |
|---|---|
| Type | Transceiver |
| Mounting | Surface Mount |
| Voltage | 4.5V ~ 5.5V |
| Protocol | CANbus |
| Operating temperature | -40°C~85°C |
| Duplex | Half |
| Package | Tube |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Receiver hysteresis | 200 mV |
| Number of drivers (Receivers) | 1/1 |
The Microchip MCP2551-I/SN is a half-duplex CANbus transceiver that interfaces a CAN protocol controller to the physical two-wire bus. It handles the differential transmit and receive signals, providing 200 mV of receiver hysteresis for noise rejection on the bus lines.
It is not designed for 3.3V-only microcontrollers without a level shifter or a separate 5V supply — the transceiver's VCC must be in the 4.5V–5.5V window for proper bus drive levels.
Yes, the MCP2551-I/SN is a direct replacement for the MCP2551-E/SN. Both are pin-compatible and functionally identical.
It cannot be powered from a 3.3V rail. A level shifter or separate 5V supply is needed when interfacing with 3.3V microcontrollers.