MAX3055ASD+

Overview

The MAX3055ASD+ is a ±80V fault-protected and tolerant CAN transceiver designed for Controller Area Network (CAN) bus applications. It operates within an extended supply voltage range of +4.75V to +5.25V for VCC and supports battery voltages up to +42V. The device guarantees full wake-up capability during failure modes and features built-in slope control for unshielded cable use. It provides a data rate of 125kbps with low-current sleep and standby modes accessible via STB and EN pins. The component includes thermal shutdown, overcurrent protection, and receiver input filters for high noise immunity.

Feature Summary

• ±80V Fault Protection on CANH and CANL lines
• Full Wake-Up Capability During Failure Modes
• Built-in Slope Control for Unshielded Cables
• Low-Current Sleep and Standby Modes

Applications

• Industrial HVAC systems
• Automotive CAN networks
• Rugged environment communication interfaces

Procurement Notes

Verify the ordering suffix '+T' indicates tape-and-reel packaging when sourcing from distributors. Confirm the 'SD' package designation corresponds to the 14-pin Small Outline package. Ensure the part number matches the specific temperature grade required for your application environment.

Selection Notes

Select the MAX3055ASD+ specifically for 125kbps data rate requirements. Choose this model over the MAX3054 if lower speed is sufficient or over the MAX3056 if higher speed is needed. Verify compatibility with existing termination resistor configurations connected to RTH and RTL pins.

Part Context

This component belongs to the MAX3054/MAX3055/MAX3056 family of fault-protected CAN transceivers. It shares pinout and functional similarities with industry-standard parts like the TJA1054. The family differentiates primarily by optimized data rates: 250kbps for MAX3054, 125kbps for MAX3055, and 40kbps for MAX3056.

Replacement Considerations

Publicly confirmed pin-compatible replacements include the MAX3054ASD+ and MAX3056ASD+. Verify that the substitute's data rate meets system requirements before implementation.

FAQ

How does the MAX3055 handle bus failures?

It switches to single-wire mode for specific faults while guaranteeing full wake-up capability. The ERR pin signals failure detection and recovery.

What is the function of the INH pin?

The INH pin serves as an inhibit output to deactivate an external voltage regulator during sleep mode, reducing overall power consumption.

Does the device support unshielded cables?

Yes, the built-in slope-control feature allows the MAX3055 to operate effectively with unshielded cables.