MAX3054ASD

Overview

The MAX3054ASD is a ±80V fault-protected CAN transceiver manufactured by Analog Devices Inc./Maxim Integrated. It interfaces protocol controllers with CAN bus lines, supporting data rates up to 250kbps. The device operates within a supply voltage range of 4.75V to 5.25V and functions across an extended temperature range of -40°C to +125°C. Packaged in a 14-pin SOIC (0.154 inch width), it features full-duplex communication capability. Key electrical characteristics include a receiver hysteresis of 18mV and low-power standby modes accessible via STB and EN pins.

Feature Summary

• Provides ±80V fault protection on CANH and CANL bus lines against electrical transients and overcurrent conditions.
• Guarantees full wake-up capability during failure modes through integrated bus failure management logic.
• Supports single-wire transmission mode with ground offset voltages up to 1.5V for specific fault scenarios.
• Includes thermal shutdown protection that disables the transmitter output stage if junction temperature exceeds approximately +165°C.

Applications

• Industrial HVAC systems
• Automotive electronic control units
• Rugged industrial environments requiring high noise immunity

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against official datasheet specifications. Confirm the package type matches the 14-SOIC standard. Ensure the operating temperature range aligns with system requirements. Cross-reference the part number suffix to confirm lead-free and RoHS compliance status as documented by the manufacturer.

Selection Notes

Select the MAX3054ASD for applications requiring high-speed data transmission at 250kbps. This model is suitable where robust fault tolerance and wide operating temperature ranges are critical. Consider the pin compatibility with TJA1054 if migrating existing designs. Evaluate power consumption requirements for low-power modes using the STB and EN control pins.

Part Context

The MAX3054 belongs to the MAX3054/MAX3055/MAX3056 family of CAN transceivers. While the MAX3055 supports 125kbps and the MAX3056 supports 40kbps, the MAX3054 is optimized for higher data rates. All variants share similar fault protection features and pin configurations, differing primarily in their specified maximum data rates and slew control capabilities.

Replacement Considerations

The MAX3054ASD is pin and functionally compatible with the TJA1054. Designers migrating from other CAN transceivers should verify signal integrity and timing parameters to ensure seamless integration without hardware modifications.

FAQ

How does the MAX3054 handle bus failures?

The device detects various wiring faults such as short circuits or wire interruptions. Upon detection, it can switch to single-wire mode to maintain communication and asserts the ERR pin to indicate the fault condition.

What is the purpose of the INH pin?

The INH pin serves as an inhibit output used to control an external voltage regulator. It goes high during wake-up or power-on events to deactivate the regulator during sleep modes, thereby reducing overall power consumption.

Does the MAX3054 support unshielded cables?

While the MAX3054 is designed for 250kbps operation, the MAX3055 and MAX3056 models specifically feature built-in slope control to facilitate the use of unshielded cables. The MAX3054 relies on its receiver input filters for noise immunity.