MAX33011EASA+

Overview

The MAX33011EASA+ is a +5V, high-speed CAN transceiver housed in an 8-pin SOIC package. It supports data rates up to 5Mbps and operates within a supply voltage range of 4.5V to 5.5V on VDD. The device features ±65V fault protection on the CANH and CANL lines, along with ±25V extended common-mode input range (CMR). It provides ±45kV ESD protection via the Human Body Model. The component includes a dedicated FAULT pin for reporting overcurrent, overvoltage, and transmission failures. It incorporates a dominant timeout mechanism to prevent bus lockup and supports silent mode operation.

Feature Summary

• Integrated ±65V fault tolerance protects the CAN bus interface against severe overvoltage conditions.
• Fault detection and reporting capability identifies overcurrent, overvoltage, and transmission errors via the FAULT pin and RXD output.
• Silent mode functionality disables the transmitter while maintaining receiver monitoring for system diagnostics.
• Dominant timeout feature prevents bus lockup caused by controller errors or TXD input faults.

Applications

• Industrial Automation
• Building Automation
• Heavy Equipment/Machinery

Procurement Notes

Verify the specific ordering suffix to confirm the package type and RoHS compliance status. Ensure the logic supply requirements match the target microcontroller interface. Confirm that the selected variant supports the necessary control pins such as Silent Mode or Standby. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component when robust fault protection and diagnostic reporting are required for CAN networks. The 8-pin SOIC package suits standard surface-mount layouts. Verify that the application environment stays within the -40°C to +125°C operating temperature range. Consider the silent mode feature if transmitter disabling is needed for network management.

Part Context

The MAX33011EASA+ belongs to the MAX33011E-MAX33015E family of +5V CAN transceivers. This family shares core electrical characteristics but differs in available control features and packaging options. Other members include variants with standby modes or loopback capabilities in different form factors.

Replacement Considerations

Direct replacements within the same family include the MAX33012EASA+, which offers a standby mode instead of silent mode. Both devices share the 8-pin SOIC package and identical electrical specifications regarding fault protection and data rates.

FAQ

How does the MAX33011EASA+ handle bus lockup?

The device includes a transmitter-dominant timeout feature. If the TXD input remains in the dominant state for longer than the specified timeout period, the driver switches to the recessive state to release the bus.

What is the function of the S pin on the MAX33011EASA+?

The S pin enables Silent Mode. Driving this pin high disables the transmitter regardless of the TXD level, allowing the receiver to monitor the bus without transmitting.

How is a fault condition cleared after it is detected?

After a fault occurs, the FAULT pin goes high. To clear the condition, the system must clock out the 6-bit fault code through the RXD pin using 10 clock pulses on the TXD pin.