The MAX483ESA+T from Maxim Integrated is a robust, low-power transceiver for RS-485 and RS-422 communication that features a slew-rate-limited driver to minimize electromagnetic interference (EMI) and reduce reflections caused by improperly terminated cables, making it ideal for industrial, network, and commercial applications.

Key Features

• Reduced Power Consumption: This device operates from a single 5V supply, and its low quiescent current of 300µA (typical) makes it suitable for power-sensitive applications.
• Slew-Rate Limiting: The MAX483ESA+T offers controlled driver output slew rates, which ensure reduced EMI and eliminate the need for error-prone, costly external slew rate control.
• Extended Temperature Range: The device is specified for operation from -40°C to +85°C, making it reliable in a wide range of environments.
• Half-Duplex Communication: It is designed for half-duplex communication, allowing bidirectional communication on a single twisted-pair.
• Fail-Safe Receiver: The receiver has a fail-safe feature that guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when they are connected to a terminated transmission line with all drivers disabled.
• ESD Protection: It includes enhanced electrostatic discharge (ESD) protection up to ±15kV, using the Human Body Model, which provides robustness for handling and assembly in industrial environments.

Applications

• Industrial-Control Local Area Networks
• Level Translators
• Low-Power RS-422 Transceivers
• Transceivers for EMI-Sensitive Applications

The MAX483ESA+T transceiver is available in an 8-pin NSOIC package and is part of a family of devices that includes the MAX481, MAX485, MAX487–MAX491, and MAX1487. It is designed for balanced data transmission and complies with both TIA/EIA-485-A and ISO 8482:1987(E) standards. The combination of low-power operation, ESD protection, and fail-safe receiver makes the MAX483ESA+T an excellent choice for reliable data communication in harsh industrial environments.