The MAX3490EESA-T is an integrated circuit (IC) component that offers a comprehensive solution for RS-485/RS-422 applications. It presents several key features that make it desirable in various industrial, commercial, and automotive settings.
This IC is designed to provide robust half-duplex communication with enhanced noise immunity. It has a wide range of operating voltage, from 3V to 5.5V, making it compatible with different power supply systems. Its low quiescent current consumption of only 375µA maximizes energy efficiency.
One of the standout features of the MAX3490EESA-T is its 1/8-unit load input impedance, which allows connection of up to 256 transceivers on a single bus without requiring additional drivers or buffers. This enables large-scale networking applications. Additionally, its fail-safe receiver input allows the bus to be in a high-impedance state when idle or when all transmitters are disabled, supporting multi-point data transmission.
The IC incorporates a slew-rate-limited driver, ensuring reduced electromagnetic interference (EMI) radiation and minimizing reflections due to fast switching. This feature simplifies system design, enabling compliance with various EMI regulations.
To ensure safety and reliability, the MAX3490EESA-T includes short-circuit protection on receiver and driver outputs, guarding against voltage spikes and bus fault conditions. Thermal shutdown circuitry and undervoltage lockout (UVLO) functionality further enhance its robustness
