The ST485EXN is a robust low power transceiver for RS-485 and RS-422 communication from STMicroelectronics. It features a half-duplex differential data transmission and is designed to withstand the demanding conditions of industrial environments. This device is capable of operating with a supply voltage ranging from 5V down to 3.3V, making it suitable for a variety of systems that require efficient power management.

Key Features

• Low Quiescent Current: The ST485EXN boasts a low-power consumption profile, with a typical quiescent current of just 300μA, making it ideal for power-sensitive applications.
• Extended Common-Mode Range: It can handle common-mode voltages from -7V to +12V, allowing for robust data transmission even in electrically noisy environments.
• High Data Rate: This transceiver supports data rates up to 5 Mbps, enabling fast communication for networks that require high-speed data exchange.
• Thermal Shutdown Protection: It includes a thermal shutdown feature that protects the device from damage due to excessive temperature.
• Failsafe Receiver: The ST485EXN ensures a high level of reliability with its failsafe receiver feature, which guarantees a known output state if the inputs are left unconnected.

Applications

The ST485EXN is designed for multipoint applications in industrial, commercial, and telecommunications systems. It is particularly well-suited for:

• Factory automation and process control
• Building automation and HVAC systems
• Networked security cameras and surveillance systems
• Point of Sale (PoS) terminals
• Telecommunications equipment

Package and Quality

The device comes in a narrow 8-pin plastic SO package, which provides a compact footprint while ensuring adequate thermal performance and mechanical robustness. STMicroelectronics is committed to delivering high-quality products, and the ST485EXN is no exception, meeting stringent industry standards for performance and reliability.

For engineers and designers looking for a reliable, low-power solution for RS-485/RS-422 communication, the ST485EXN offers a perfect blend of performance, power efficiency, and industrial-grade robustness.