The MCP2551-I/SN is a CAN transceiver from Microchip Technology Inc. It is used for interfacing with the Controller Area Network (CAN) bus, which is a communication standard widely used in automotive and industrial applications. The MCP2551-I/SN is designed for high-speed CAN networks and features a number of specifications for efficient operation.
Package Details:
The MCP2551-I/SN typically comes in a 8-pin SOIC (Small Outline Integrated Circuit) package.Pin Function Specifications:
Pin No. Pin Name Function Description 1 VDD Positive power supply input (typically 5V). 2 TXD Transmit data pin for CAN bus (connected to CAN controller's TX output). 3 RXD Receive data pin from CAN bus (connected to CAN controller's RX input). 4 VSS Ground pin for power supply. 5 CANH CAN bus high signal (connected to CAN network's CAN_H line). 6 CANL CAN bus low signal (connected to CAN network's CAN_L line). 7 RES Resistor pin (used for internal biasing). Often connected to VSS. 8 SLEEP Sleep mode pin. Pulling this pin low puts the device into sleep mode.Explanation of Pins:
Pin 1 (VDD): Supplies power to the transceiver, typically 5V. It is the voltage input for the entire device. Pin 2 (TXD): This is the transmit data pin for the CAN bus. It is used to send signals to the CAN bus from the controller. Pin 3 (RXD): This is the receive data pin for the CAN bus. It receives signals from the CAN bus to the microcontroller or CAN controller. Pin 4 (VSS): This is the ground pin for the device, providing a return path for the current. Pin 5 (CANH): This is the high signal of the CAN bus. It is one of the two differential lines (CANH and CANL) that carry the CAN bus signals. Pin 6 (CANL): This is the low signal of the CAN bus, which works together with CANH to form the differential pair that carries the CAN data. Pin 7 (RES): This pin is typically used for internal biasing and is usually tied to ground through a resistor. Pin 8 (SLEEP): This pin is used to control the power mode of the MCP2551. By pulling this pin low, the device enters a low-power sleep mode.20 FAQ Related to MCP2551-I/SN
Q: What is the MCP2551-I/SN used for? A: The MCP2551-I/SN is a CAN transceiver used to interface with the CAN bus for communication in automotive and industrial applications. Q: What package does the MCP2551-I/SN come in? A: The MCP2551-I/SN comes in an 8-pin SOIC package. Q: What is the voltage supply for the MCP2551-I/SN? A: The MCP2551-I/SN operates at a typical supply voltage of 5V. Q: How many pins does the MCP2551-I/SN have? A: The MCP2551-I/SN has 8 pins. Q: What is the function of pin 1 (VDD)? A: Pin 1 (VDD) is the power supply input for the device, typically 5V. Q: What does pin 2 (TXD) do? A: Pin 2 (TXD) is the transmit data pin, used to send CAN signals to the bus from the microcontroller. Q: What is the purpose of pin 3 (RXD)? A: Pin 3 (RXD) is the receive data pin, used to receive CAN bus data to the microcontroller. Q: What is the function of pin 4 (VSS)? A: Pin 4 (VSS) is the ground pin for the device. Q: What does pin 5 (CANH) do? A: Pin 5 (CANH) is the high signal of the CAN bus, carrying part of the differential pair for CAN communication.Q: What is the role of pin 6 (CANL)?
A: Pin 6 (CANL) is the low signal of the CAN bus, forming the second half of the differential pair for CAN communication.Q: What is pin 7 (RES) used for?
A: Pin 7 (RES) is used for internal biasing and is usually connected to ground.Q: How does pin 8 (SLEEP) function?
A: Pin 8 (SLEEP) controls the device’s power mode. When pulled low, the device enters sleep mode.Q: Can I use the MCP2551-I/SN for high-speed CAN applications?
A: Yes, the MCP2551-I/SN is designed for high-speed CAN applications.Q: What is the typical power consumption in normal mode?
A: In normal mode, the MCP2551-I/SN typically consumes about 10mA of current.Q: How do I enter sleep mode on the MCP2551-I/SN?
A: To enter sleep mode, pull pin 8 (SLEEP) low.Q: What is the maximum data rate for the MCP2551-I/SN?
A: The MCP2551-I/SN supports up to 1 Mbps data rate.Q: What is the purpose of the CANH and CANL pins?
A: The CANH and CANL pins form the differential signaling pair that is used for CAN bus communication.Q: What is the temperature range for the MCP2551-I/SN?
A: The MCP2551-I/SN typically operates in a temperature range from -40°C to 125°C.Q: Is the MCP2551-I/SN compatible with both standard and extended CAN frames?
A: Yes, the MCP2551-I/SN is compatible with both standard and extended CAN frames.Q: Can the MCP2551-I/SN be used in automotive applications?
A: Yes, the MCP2551-I/SN is specifically designed for automotive and industrial applications, making it suitable for CAN bus systems in vehicles.This covers the full specification and pin function details of the MCP2551-I/SN in a thorough manner, ensuring that all 8 pins are explained comprehensively. Additionally, the FAQ provides helpful answers to the most common questions related to this transceiver.