MAX3057ASA+

Overview

The MAX3057ASA+ is a high-speed CAN transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It interfaces between the CAN protocol controller and physical bus lines, supporting data rates up to 2Mbps. The device features ±80V fault protection on CANH and CANL pins against shorts in high-voltage power buses. It operates from a single +5V supply with a dominant state current of 56mA typical and recessive state current of 3.6mA typical. In standby mode, quiescent current drops to 125µA typical, while shutdown current is 15µA typical. It is housed in an 8-pin SO package and specified for operation from -40°C to +125°C.

Feature Summary

• Provides ±80V fault protection on bus lines for use in high-voltage systems
• Supports four operating modes: high speed, slope control, standby, and shutdown
• Slope-control mode reduces EMI emissions and allows unshielded cable usage
• Includes thermal shutdown and output short-circuit current limiting

Applications

• HVAC Controls
• Telecom 72V systems
• Industrial environments requiring high-voltage bus communication

Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the ordering suffix matches the required RoHS compliance status. Ensure the package type corresponds to the design footprint requirements. Check for any specific handling instructions related to electrostatic discharge during storage and assembly processes.

Selection Notes

Select this model when ±80V fault protection is required for high-voltage applications. Choose the MAX3057 over the MAX3050 if AutoShutdown functionality is not needed. Consider the slope-control mode for reducing electromagnetic interference in unshielded cabling scenarios. Verify that the supply voltage range aligns with the system's +5V power architecture.

Part Context

The MAX3057ASA+ belongs to the MAX3050/MAX3057 family of CAN transceivers designed for robust communication in noisy industrial environments. It shares core specifications with the MAX3050 but lacks the AutoShutdown feature found in the MAX3050 variant. Both devices offer identical fault protection and operational modes, making them suitable for standard CAN network implementations requiring high reliability.

Replacement Considerations

The MAX3050ASA+ is a compatible alternative within the same family. The primary difference is the absence of AutoShutdown in the MAX3057. If automatic shutdown based on bus inactivity is unnecessary, the MAX3050 can serve as a direct functional substitute without circuit modifications.