MCP2558FD-H/SN

Drivers, Receivers, Transceivers Overview

The MCP2558FD-H/SN is a high-speed CAN FD transceiver manufactured by Microchip Technology, designed for automotive and industrial applications. It supports communication speeds up to 8 Mbps with optimized propagation delay of 120 ns and loop delay symmetry of ±10% at 2 Mbps. The device operates within a supply voltage range of 4.5 V to 5.5 V on the VDD pin and accepts digital I/O voltages from 1.7 V to 5.5 V via the dedicated VIO pin. It features an 8-pin SOIC package and includes Silent Mode functionality controlled by the S pin. The component provides ESD protection of ±13 kV (IEC 61000-4-2) and complies with ISO/DIS-11898-2:2015 standards.

Drivers, Receivers, Transceivers Feature Summary

• Supports CAN FD data rates up to 8 Mbps with improved propagation delay for longer bus lengths.
• Includes Silent Mode capability to disable the transmitter while maintaining receiver functionality.
• Features permanent dominant detection to prevent bus corruption during extended low states.
• Provides robust internal protection against battery shorts, electrical transients, and thermal overload.

Drivers, Receivers, Transceivers Applications

• CAN 2.0 and CAN FD networks in automotive systems
• Industrial control applications requiring high-speed communication
• Aerospace and medical equipment interfaces
• Consumer electronics utilizing CAN FD protocols

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix '-H/SN' corresponds to the SOIC-8 package variant when sourcing components. Confirm that the VIO pin requirement aligns with the microcontroller's logic level, as this model supports independent digital I/O supply ranging from 1.7 V to 5.5 V. Ensure compliance with RoHS directives if required by the target assembly process.

Drivers, Receivers, Transceivers Selection Notes

Select the MCP2558FD-H/SN over the MCP2557FD variant when independent digital I/O supply voltage (VIO) is necessary for interfacing with 3.3 V or lower voltage microcontrollers. This model is suitable for designs requiring Silent Mode operation and compatibility with both 3.3 V and 5 V logic levels without internal supply tying. Consider the SOIC-8 package constraints regarding thermal dissipation and board space availability.

Drivers, Receivers, Transceivers Part Context

This component belongs to the MCP2557FD/8FD family of CAN FD transceivers. It shares core electrical characteristics and functional behavior with the MCP2557FD, differing primarily in the presence of the external VIO pin. The family is designed to meet stringent automotive EMC requirements and supports flexible data rate protocols defined in ISO 11898-2.

Drivers, Receivers, Transceivers Replacement Considerations

The MCP2557FD-H/SN serves as a direct functional substitute if the VIO pin is internally tied to VDD in the design. Other package variants such as MCP2558FD-H/MF or MCP2558FD-H/MNY offer equivalent electrical performance in DFN or TDFN footprints but require layout adjustments for the exposed thermal pad and pin mapping differences.

Drivers, Receivers, Transceivers FAQ

How does the MCP2558FD handle unpowered conditions?

The device enters Unpowered mode if either VDD or VIO drops below their respective Power-on Reset (POR) levels. In this state, the CAN bus is biased to ground using high impedance, preventing communication and ensuring the node does not interfere with the bus.

What is the function of the Permanent Dominant Detection feature?

Permanent Dominant Detection prevents a stuck-low TXD input from corrupting the bus. If TXD remains Low for approximately 1.9 ms, the device disables the CANH and CANL output drivers until TXD goes High, allowing the high-speed receiver to remain active.

Is the MCP2558FD compatible with 3.3 V microcontrollers?

Yes, the MCP2558FD is compatible with 3.3 V microcontrollers because it features a separate VIO pin that allows the digital I/O supply to be set independently of the main VDD supply, supporting logic levels from 1.7 V to 5.5 V.