MAX3490EESA/GG8

Overview

The MAX3490EESA/GG8 is a full-duplex RS-485/RS-422 transceiver from the MAX3483E family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +3.3V supply (3.0V to 3.6V) without requiring a charge pump and is interoperable with +5V logic. The device supports data rates up to 12Mbps and features ±15kV ESD protection per Human Body Model and IEC 1000-4-2 standards. It includes driver short-circuit current limiting and thermal shutdown for overload protection, alongside a receiver fail-safe feature that ensures a logic-high output when inputs are open.

Feature Summary

• Full-duplex communication architecture with independent transmit and receive channels
• Enhanced electrostatic discharge protection on all I/O pins
• Integrated driver overload protection mechanisms
• Fail-safe receiver input design

Applications

• Telecommunications systems
• Industrial-control local area networks
• Transceivers for EMI-sensitive applications
• Integrated services digital networks
• Packet switching environments

Procurement Notes

Verify the specific suffix GG8 against official manufacturer documentation to confirm package type and temperature range specifications. Ensure compatibility with existing system voltage levels and interface requirements before procurement. Cross-reference ordering information to validate availability and exact part designation.

Selection Notes

Select this component for applications requiring full-duplex RS-485 or RS-422 communication at speeds up to 12Mbps. It is suitable for designs needing robust ESD protection and operation from a single 3.3V supply. Consider its fail-safe receiver characteristics for reliable data transmission in noisy industrial environments where bus contention or open lines may occur.

Part Context

The MAX3490E belongs to the Maxim Integrated MAX3483E family of low-power transceivers. This family includes half-duplex variants like the MAX3483E and MAX3485E, as well as other full-duplex models such as the MAX3488E and MAX3491E. All devices share common design principles including 3.3V operation and enhanced ESD protection, differing primarily in duplex mode, data rate capabilities, and pin configurations.

Replacement Considerations

Direct pin-compatible replacements within the same family include the MAX3488E and MAX3491E, which also offer full-duplex functionality. Verify that alternative components match the required 12Mbps data rate and 3.3V operating voltage constraints.