MCP251863T-H/SS

Controllers Overview

The MCP251863T-H/SS is an external CAN FD controller with an integrated transceiver and SPI interface, manufactured by Microchip Technology. It supports arbitration bit rates up to 1 Mbps and data bit rates up to 5 Mbps. The device operates within a temperature range of -40°C to +150°C (High grade). Power supply requirements include VDD from 2.7V to 5.5V and VCC at 5V. Active current consumption is maximum 20 mA at 5.5V with a 40 MHz CAN clock. Sleep current is typically 15 µA, with low power mode current at maximum 10 µA across the full temperature range. The package is SSOP-28.

Controllers Feature Summary

• Integrates a CAN FD controller and high-speed transceiver in a single small-footprint component.
• Supports mixed CAN 2.0B and CAN FD modes compliant with ISO 11898-1:2015 and ISO 11898-2:2016 standards.
• Features 31 configurable FIFOs and 32 flexible filter/mask objects for message handling.
• Includes bus health diagnostics, error counters, and wake-up capability via the CAN bus.

Controllers Applications

• Automotive electronic control units requiring CAN FD communication
• Industrial automation networks needing robust fieldbus connectivity
• Microcontrollers lacking native CAN FD peripherals

Controllers Procurement Notes

Verify the 'H' suffix indicates the High temperature grade (-40°C to +150°C) rather than the Extended grade. Confirm the '/SS' designation corresponds to the SSOP-28 package. Ensure compatibility with system voltage levels, as VDD accepts 2.7V to 5.5V while VCC requires 5V. Check for moisture sensitivity level 2 packaging requirements during storage and handling.

Controllers Selection Notes

Select this variant when operation above +125°C is required, as it provides the extended thermal range up to +150°C. The SSOP-28 package offers a surface-mount solution suitable for space-constrained designs. Consider the 20 mA active current draw for power budgeting. Verify that the host microcontroller supports SPI modes 0,0 or 1,1 for proper interface configuration.

Controllers Part Context

This component belongs to the MCP251863 family, which combines the MCP2518FD controller with the ATA6563 transceiver. The 'H' suffix specifically denotes the high-temperature operating range compared to the standard 'E' grade. It serves as a drop-in replacement for discrete controller and transceiver combinations, simplifying PCB layout and reducing component count.

Controllers Replacement Considerations

MCP251863T-E/SS (Extended temperature grade only)

Controllers FAQ

What is the difference between the MCP251863T-H/SS and the E-grade version?

The 'H' suffix indicates a High temperature grade with an operating range of -40°C to +150°C, whereas the 'E' suffix denotes an Extended grade limited to -40°C to +125°C.

Does the MCP251863 support both CAN 2.0B and CAN FD protocols?

Yes, the device supports Classical format (CAN 2.0B) and CAN Flexible Data Rate (CAN FD) formats, allowing for mixed mode operation.

How many flexible filters and mask objects are available?

The MCP251863 provides 32 flexible filter and mask objects that can be configured to filter either Standard ID plus first 18 data bits or Extended ID.