STMicroelectronics

ST3485EBN

ST3485EBN Description

The ST3485EBN is a half-duplex transceiver IC designed for reliable data transmission over long distances and in noisy environments. Manufactured by STMicroelectronics, this interface IC chip is part of the ST3485 family and is housed in a tube package. It features a single driver and a single receiver, making it suitable for applications requiring efficient and straightforward communication protocols such as RS422 and RS485. The ST3485EBN operates within a supply voltage range of 3V to 3.6V and supports a data rate of up to 15Mbps, ensuring high-speed communication. The receiver incorporates a hysteresis of 70 mV, which enhances signal integrity and reduces the risk of false triggering. This component is mounted through-hole, providing robust mechanical stability and ease of integration into various electronic systems. Although the product is now obsolete, its legacy in the electronics industry remains significant due to its reliable performance and compliance with industry standards such as REACH and RoHS3.

ST3485EBN Features

• Half-Duplex Operation: The ST3485EBN is designed for half-duplex communication, allowing it to transmit and receive data on the same line but not simultaneously. This feature is ideal for applications where bidirectional communication is required without the complexity of full-duplex systems.
• Receiver Hysteresis: The receiver includes a hysteresis of 70 mV, which significantly improves noise immunity and ensures stable operation in noisy environments. This feature reduces the likelihood of false triggering and enhances overall system reliability.
• Data Rate: With a data rate of up to 15Mbps, the ST3485EBN supports high-speed data transmission, making it suitable for applications requiring fast and efficient communication.
• Supply Voltage Range: The IC operates within a supply voltage range of 3V to 3.6V, providing flexibility in power supply options and ensuring compatibility with a wide range of electronic systems.
• Through-Hole Mounting: The through-hole mounting type ensures robust mechanical stability and ease of integration into various electronic designs. This mounting method is particularly advantageous in applications where mechanical durability is critical.
• Compliance and Standards: The ST3485EBN is REACH unaffected and RoHS3 compliant, ensuring that it meets the stringent environmental and safety standards required by the electronics industry. This compliance is crucial for manufacturers aiming to produce environmentally friendly and safe products.

ST3485EBN Applications

The ST3485EBN is well-suited for a variety of applications where reliable and efficient data transmission is essential. Some specific use cases include:

• Industrial Automation: In industrial settings, the ST3485EBN can be used for communication between PLCs (Programmable Logic Controllers), sensors, and actuators. Its robust design and high noise immunity make it ideal for harsh industrial environments.
• Building Automation: For building automation systems, the ST3485EBN can facilitate communication between controllers and various devices such as HVAC systems, lighting controls, and security systems. Its half-duplex operation and high data rate ensure efficient and reliable communication.
• Telecommunications: In telecommunication applications, the ST3485EBN can be used for data transmission over long distances. Its support for RS422 and RS485 protocols makes it suitable for various communication links within telecommunication networks.
• Transportation Systems: The ST3485EBN can be employed in transportation systems for communication between different components of a vehicle or between vehicles and infrastructure. Its reliability and noise immunity are crucial in ensuring safe and efficient operation.

Conclusion of ST3485EBN

The ST3485EBN is a versatile and reliable half-duplex transceiver IC that offers several unique features and advantages over similar models. Its robust design, high noise immunity, and compliance with industry standards make it an excellent choice for a wide range of applications. Although now obsolete, the ST3485EBN remains a testament to STMicroelectronics' commitment to producing high-quality and reliable electronic components. For existing systems that still utilize this IC, its continued availability ensures that these systems can be maintained and upgraded as needed.