MAX3050ASA+T

Overview

The MAX3050ASA+T is a ±80V fault-protected, 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 in high-speed mode or 40kbps to 500kbps in slope-control mode. The device operates from a single +5V supply with typical dominant state current of 72mA and recessive state current of 5.5mA. Quiescent current in standby mode is 125µA, while shutdown current drops to 15µA. It features an AutoShutdown function for power management and automatic wake-up capability. The component is specified for operation within a temperature range of -40°C to +125°C and utilizes an 8-pin SO package.

Feature Summary

• Provides ±80V fault protection against shorts in high-voltage power buses
• Supports four operating modes: high speed, slope control, standby, and shutdown
• Includes AutoShutdown function that triggers low-current shutdown after inactivity
• Features thermal shutdown and current limiting for output protection

Applications

• HVAC Controls
• Telecom 72V systems

Procurement Notes

Verify the ordering suffix '+T' indicates tape-and-reel packaging when sourcing components. Confirm the manufacturer designation as Analog Devices Inc. or Maxim Integrated on the marking. Ensure the part number matches the specific -40°C to +125°C temperature grade. Cross-reference the datasheet revision date to confirm technical specifications align with your design requirements.

Selection Notes

Select this component for applications requiring robust fault protection against high-voltage bus shorts. The MAX3050ASA+T is suitable for systems needing data rates up to 2Mbps or reduced EMI via slope control. Consider the AutoShutdown feature for power-sensitive designs. Verify compatibility with the required +5V logic level and ensure the 8-pin SO package fits the PCB layout constraints.

Part Context

This device belongs to the MAX3050/MAX3057 family of CAN transceivers designed for industrial and telecom environments. It shares functional similarities with other high-speed CAN transceivers but distinguishes itself through integrated ±80V fault tolerance. The MAX3050 variant specifically includes AutoShutdown capabilities not found in all related models, making it distinct within the broader interface IC category.

Replacement Considerations

Public confirmed substitute part numbers include MAX3057ASA+T, which lacks the AutoShutdown feature but maintains identical electrical characteristics and pinout.