MCP2551-E/P

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The MCP2551-E/P is a full-featured, single-channel, Hi-Speed CAN Transceiver. This transceiver offers a high degree of integration and flexibility and is designed to meet the requirements of ISO 11898-2 and SAE J2284. The MCP2551–E/P can replace multiple CAN controllers and CAN Master series transceivers, offering significant cost and space savings.

The MCP2551-E/P belongs to the interface - drivers, receivers, transceivers category and its working principle consists of four major features: bus monitoring and termination, bus hysteresis, bus voltage detection, and overcurrent protection. These features are to ensure reliable communication along the CAN bus.

The transceiver supports both high-speed (HS) and low-speed (LS) communication and provides a differential voltage receiver capable of demodulating the data and status information present on the bus. The bus receiver\'s 4.5 V to 5.5 V common-mode voltage range, in combination with its 3V9 tolerant receiver inputs, allows it to interface with most of the popular microcontroller families, including 5V CMOS, 3V CMOS and 3V9, as well as the AVR family. The MCP2551-E/P also provides a very low receiver input current without affecting its logical low/high level output configurations. This allows the MCP2551-E/P to be used with logic families having very low logic levels.

The MCP2551-E/P supports both split supply (with an independent III/O supply) and single supply (with a voltage of up to 5.5 V). The single supply arrangement is usually used in most applications since it simplifies the power supply design. On the other hand, the split supply arrangement is useful in applications where higher levels of reliability are needed as it allows the transceiver to function even if the temporary loss of one or two power supplies occurs.

The MCP2551-E/P also is equipped with several protection features which help ensure reliable communication on the CAN bus. The line termination feature establishes low impedance connection to the bus lines providing proper termination for the bus signals. The hysteresis feature eliminates noise and glitches in the bus lines, reducing bit errors. The voltage detection feature monitors the voltage on the CANH and CANL lines to detect whether a valid logic level is present or not. The over-current protection system prevents excessive current flow on the bus lines ensuring that the CAN transceiver does not get damaged.

The MCP2551-E/P is a very useful device in the field of CAN bus communication and is used in a variety of applications. It is especially useful in automotive applications, industrial control systems and robotics. Its integrated protection features ensure reliable communication and robust operation even in harsh environments. It is also used in applications such as smart grid technologies and small form factor embedded systems.

In conclusion, the MCP2551-E/P is a very reliable transceiver capable of meeting the requirements of ISO 11898-2 and SAE J2284. Its protection features make it suitable for a wide range of applications and its low power requirement makes it the perfect choice for low-power systems. Its integrated features and flexibility make it a very cost-effective solution for CAN bus communication.

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