The controller area network (CAN bus) in a vehicle is the internal communication control centre that relays information between the vehicle’s various electronic control units (ECUs). Each ECU needs a central processing unit (CPU), CAN transceiver and CAN controller to allow it to pass data to and from the CAN bus.
What do CAN transceivers do?
The CAN transceiver connects the CAN controller to the CAN bus. Its main job is to translate the data from the bus so that the controller can read it, and vice versa. By ensuring the efficient running of the communication system, they help minimise the amount of current used.
Types of CAN transceivers
The main distinction between different types of CAN transceivers is their speed:
Low-speed CAN transceivers allow data rates up to 125 kilobits per second
High-speed CAN transceivers allow for data rates of up to 1 megabit per second
The advantage of low-speed CAN transceivers is that they can tolerate a fault in one of the communication lines without the whole communication system failing.
Description:
From Microchip the MCP25612FD is a dual CAN
Transceiver that supports both CAN 2.0 (Classic) and CAN FD (Flexible Data-rate) physical layer requirements, allowing designers to build flexibility into their CAN based applications. This IC offers the features of two ...
Description:
The MCP2542FD CAN transceiver is designed for high-speed
CAN FD applications up to 8Mbps communication speed. The maximum propagation delay was improved to support longer bus length.The device meets the automotive requirements for CAN FD bit rates exceeding 2 Mbps, ...
Description:
Stand-alone LIN Transceiver MCP200x family members, 8-pin PDIP,
DFN and SOIC packages MCP2003-LIN-compatible driver with WAKE pin MCP2004-LIN-compatible driver with FAULT/TXE pin. This device provides a bidirectional, half-duplex communication physical interface. The device is short circuit and overtemp protected ...
