MCP2551 Transceiver: Circuits, Pinout, and Datasheet

The MCP2551 is an 8-pin DIP package high-speed CAN  (Controller Area Network) transceiver. This fault-tolerant CAN device acts as a link between the CAN protocol controller and the physical bus. The MCP2551  is a differential transmit and receive CAN  protocol controller that complies with all ISO-11898 specifications, including the 24V requirements. It will be capable of rates of up to 1 megabit per second. In most CAN  systems, each node requires a device to transform digital signals generated by the CAN controller into signals appropriate for transmission over the bus cabling (differential output). It also acts as a buffer between the CAN  controller and high voltage spikes on the CAN bus caused by external sources (EMI,  ESD , electrical transients). The MCP2551 CAN output can drive a minimum load of 45 ohm and can link up to 112 nodes.

Pinout

Symbol

Footprint

3D Model

• Supports 1 Mb/s operation

• Implements ISO-11898 standard physical layer requirements

• Suitable for 12V and 24V systems

• Externally-controlled slope for reduced RFI emissions

• Detection of ground fault (permanent Dominant) on TXD input

• Power-on Reset and voltage brown-out protection

• An unpowered node or brown-out event will not disturb the CAN bus

• Low current standby operation

• Protection against damage due to short-circuit conditions (positive or negative battery voltage)

• Protection against high-voltage transients

• Automatic thermal shutdown protection

• Up to 112 nodes can be connected

• High-noise immunity due to differential bus implementation

• Temperature ranges:

- Industrial (I): - 40°C to +85°C

- Extended (E): -40°C to +125°C

Microchip Technology MCP2551-E/P technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology MCP2551-E/P.

Functional Block Diagram

What is CAN bus ?

The CAN bus is utilized in a variety of applications, with automobiles being the most frequent. Many cars are equipped with a CAN bus, which allows them to communicate with one another.

The MCP2551 is a chip with eight pins. On the pinout part, the chip's pinout is shown.

The breadboard of the circuit above is shown below.

Breadboard of the Circuit

Test Circuit for Electrical Characteristics

Test Circuit for Automotive Transients

• Automotive

• CAN Interfaces

Package

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