The MCP2551T-E/SN from Microchip Technology is a high-speed CAN transceiver designed to interface a CAN protocol controller with the physical CAN bus. It provides differential transmit and receive capability and complies with ISO 11898 high-speed CAN physical-layer requirements, supporting data rates of up to 1Mbps and operation in 12V and 24V systems.
The MCP2551 operates from a 4.5V to 5.5V supply and provides three operating modes through the RS pin: High-Speed, Slope-Control and Standby. In slope-control mode, an external resistor can be used to control the CANH and CANL transition rates, helping reduce RFI and EMI emissions.
Integrated protection features include protection against CAN-bus short circuits to positive or negative battery voltage, high-voltage transient protection and automatic thermal shutdown. The device also provides permanent-dominant detection on the TXD input to prevent a faulty node from continuously driving the CAN bus. Up to approximately 112 nodes can be connected under the specified bus-loading conditions.
The MCP2551T-E/SN is supplied in an 8-pin SOIC package with tape-and-reel packaging. The E-temperature option is rated from -40°C to +125°C. Microchip currently identifies the MCP2551 as Not Recommended for New Designs and recommends the MCP2561 family for new designs.
Key Specifications:
- Brand: Microchip Technology
- Part Number: MCP2551T-E/SN
- Product Type: High-Speed CAN Transceiver
- Interface Standard: CAN / ISO 11898
- Number of Transceivers: 1
- Maximum Data Rate: 1Mbps
- Supply Voltage: 4.5V to 5.5V
- Bus Interface: Differential CANH / CANL
- Operating Modes: High-Speed / Slope-Control / Standby
- Maximum Bus Nodes: Approx. 112
- TXD Input: TTL Compatible
- RXD Output: CMOS Compatible
- VREF Output: Approx. 0.5 × VDD
- Short-Circuit Protection: Yes
- High-Voltage Transient Protection: Yes
- Thermal Shutdown: Yes
- TXD Permanent-Dominant Detection: Yes
- Power-On Reset: Yes
- Brown-Out Protection: Yes
- Package: SOIC-8
- Pin Count: 8
- Mounting Type: SMD / SMT
- Operating Temperature: -40°C to +125°C
- Temperature Grade: Extended / E
- Packaging: Tape & Reel
- Design Status: Not Recommended for New Designs
- Recommended New-Design Alternative: MCP2561
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