The ST485ERBN is a sophisticated low-power transceiver for RS-485 and RS-422 communications from STMicroelectronics, a leader in semiconductor solutions. This device is designed to provide bidirectional data communications on multipoint bus transmission lines and is compliant with both RS-485 and RS-422 standards.

Key Features

• Low Quiescent Current: The ST485ERBN is optimized for low-power consumption, drawing only 300 µA of supply current, making it suitable for energy-sensitive applications.
• Wide Supply Voltage Range: It operates over a wide supply voltage range from 5 V to 12 V, allowing for flexible integration into various system designs.
• High-Speed Operation: Capable of data rates up to 2.5 Mbps, this transceiver can handle high-speed data transmission with ease.
• Thermal Shutdown Protection: The device features thermal shutdown protection, which prevents damage from overheating by disabling the driver when the junction temperature exceeds the threshold limit.
• Failsafe Receiver: The receiver input has a failsafe feature that guarantees a known output state if the input is open or shorted.
• Driver Dominant Time-out: To prevent bus lock-up, the driver includes a dominant time-out feature that deactivates the driver if it is enabled for longer than the time-out period.

Applications

The ST485ERBN is ideal for various applications that require robust and reliable data transmission. Its applications include:

• Industrial control systems
• Factory automation
• Building automation
• Networked security systems
• Instrumentation

Package and Quality

Enclosed in an 8-pin PDIP (Plastic Dual In-line Package), the ST485ERBN is designed for through-hole mounting, providing ease of integration into existing designs. STMicroelectronics ensures high manufacturing standards, with each device rigorously tested for quality and reliability.