The ST485ABN is a versatile, low power transceiver from STMicroelectronics, designed for RS-485 and RS-422 communication protocols. This robust device is capable of efficient operation in multi-point networks and is particularly well-suited for industrial applications where long-distance data transmission is a necessity.

Key Features

• Low Power Consumption: The ST485ABN is designed for energy-efficient operation, making it ideal for battery-powered applications or those requiring minimal power usage.
• High-Speed Data Transfer: With a capability to transfer data at rates up to 5 Mbps, this transceiver is suitable for high-speed communication requirements.
• Extended Temperature Range: The device operates reliably over an industrial temperature range from -40°C to 85°C, ensuring performance in harsh environments.
• Robust ESD Protection: It features ESD protection up to 15 kV, providing resilience against electrostatic discharge events.
• Duplex Operation: The ST485ABN supports full-duplex communication, enabling simultaneous two-way data transmission.

Applications

The ST485ABN is suitable for a variety of applications, including but not limited to:

• Industrial control systems
• Factory automation
• Building automation
• Networked security systems
• Remote data loggers

Technical Specifications

The ST485ABN transceiver has a differential line driver and receiver that operates with a single 5 V power supply. It features thermal shutdown for protection against excessive power dissipation and current limiting to protect the driver outputs from short circuits. The device also includes a driver slew rate control to minimize electromagnetic interference (EMI) and reduce reflections caused by improperly terminated cables, thus enhancing data integrity over long distances.

Package Details

The device is available in a standard 8-pin plastic DIP package, making it compatible with a wide range of standard PCB layouts and easy to integrate into existing designs.