STMicroelectronics

ST490ACN

ST490ACN Description

The ST490ACN is a full-duplex transceiver designed by STMicroelectronics, a leading manufacturer of high-quality semiconductor products. This transceiver is specifically engineered for RS422 and RS485 protocols, making it ideal for various industrial and communication applications. The ST490ACN features a single driver and a single receiver, ensuring efficient and reliable data transmission at a rate of 50 Mbps. It operates within a supply voltage range of 4.5V to 5.5V, making it suitable for a variety of power supply configurations.

The ST490ACN is housed in a through-hole package, specifically an 8DIP tube, which provides robust mechanical stability and ease of integration into printed circuit boards. This package type is particularly advantageous for applications requiring high reliability and durability. The receiver hysteresis of 70 mV ensures stable and accurate signal detection, even in noisy environments. Additionally, the ST490ACN is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards.

ST490ACN Features

• Full-Duplex Communication: The ST490ACN supports full-duplex communication, allowing simultaneous data transmission and reception. This feature is crucial for applications requiring continuous data exchange without interruptions.
• High Data Rate: With a data rate of 50 Mbps, the ST490ACN offers high-speed communication capabilities, making it suitable for applications demanding rapid data transfer.
• Wide Supply Voltage Range: The transceiver operates within a supply voltage range of 4.5V to 5.5V, providing flexibility in power supply options and ensuring compatibility with various power sources.
• Receiver Hysteresis: The 70 mV receiver hysteresis ensures reliable signal detection, even in the presence of noise, thereby enhancing the overall system performance and reliability.
• Through-Hole Mounting: The through-hole mounting type provides robust mechanical stability and ease of integration into PCBs, making it ideal for industrial applications where durability is paramount.
• Environmental Compliance: The ST490ACN is REACH unaffected and RoHS3 compliant, ensuring it meets the highest environmental and safety standards, making it suitable for use in a wide range of industries.
• Moisture Sensitivity Level: With an MSL rating of 1 (Unlimited), the ST490ACN is highly resistant to moisture, further enhancing its reliability in various environmental conditions.

ST490ACN Applications

The ST490ACN is well-suited for a variety of applications due to its robust design and high-performance capabilities. Some specific use cases include:

• Industrial Automation: The ST490ACN's full-duplex communication and high data rate make it ideal for industrial automation systems where real-time data transfer is critical. It can be used in PLCs (Programmable Logic Controllers), SCADA (Supervisory Control and Data Acquisition) systems, and other industrial control applications.
• Telecommunications: In the telecommunications industry, the ST490ACN can be used for data transmission over long distances, ensuring reliable and efficient communication between different nodes.
• Transportation Systems: The ST490ACN's durability and environmental compliance make it suitable for transportation systems, such as train control systems, traffic management systems, and other applications requiring high reliability.
• Medical Equipment: The transceiver's high performance and environmental compliance make it suitable for medical equipment where reliable data transmission is crucial for patient monitoring and diagnostic systems.

Conclusion of ST490ACN

The ST490ACN is a versatile and reliable transceiver designed for RS422 and RS485 protocols, offering high-speed data transmission and robust performance. Its full-duplex communication capabilities, wide supply voltage range, and receiver hysteresis ensure efficient and reliable data transfer in various applications. The through-hole mounting type and environmental compliance further enhance its durability and suitability for industrial and medical applications. While the ST490ACN is now considered obsolete, its legacy as a high-performance transceiver remains, making it a reliable choice for engineers and designers looking for a proven solution in their projects.