The CJMCU-2551 MCP2551 CAN Protocol Controller High-speed Interface Module is a high speed CAN, with fault-tolerant capabilities. It acts as an interfacing device between CAN protocol and the physical bus. The device, MCP2551 provides differential transmit and receive capabilities and is compliant with the ISO-11898, including the 24V requirements. Data transfer rate of up to 1Mb/s is achievable with this module.The module also provides a buffer between the CAN controller and the high-voltage spikes that can be generated on the CAN bus by outside sources like EMI, ESD, electrical transients, etc.Pin Description:Pin NumberPin NamePin Function1TXDTransfer Data Input2VSSGround3VDDSupply Voltage4RXDReceive Data Output5VREFReference Output Voltage6CANLCAN Low-Level Voltage I/O7CANHCAN High-Level Voltage I/O8RSSlope-control InputFeatures: Supports 1 Mb/s operationImplements ISO-11898 standard physical layer requirementsSuitable for 12V and 24V systemsThe externally-controlled slope for reduced RFI emissions Detection of ground fault (permanent Dominant) on TXD inputPower-on Reset and voltage brown-out protectionAn unpowered node or brown-out event will not disturb the CAN busLow current standby operationProtection against damage due to short-circuit conditions (positive or negative battery voltage)Protection against high-voltage transientsAutomatic thermal shutdown protectionUp to 112 nodes can be connectedHigh-noise immunity due to differential bus implementationTemperature ranges: – Industrial (I): ‑40°C to 85°C – Extended (E): ‑40°C to 125°C DATASHEET
