STMicroelectronics

ST485CDR

The ST485CDR is a monolithic integrated half-duplex asynchronous transceiver designed for use in RS-485 communication systems. It is manufactured by STMicroelectronics, a leading global semiconductor company.

Description:

The ST485CDR is a high-performance, low-power transceiver that provides reliable data communication in noisy industrial environments. It is designed to meet the requirements of the RS-485 standard, which is widely used in applications that require long transmission distances and high noise immunity.

Features:

1. RS-485 Compatibility: The ST485CDR is fully compliant with the RS-485 standard, ensuring reliable communication in multi-drop networks.
2. Low Power Consumption: The device operates with a low power consumption of 1.2 mA, making it suitable for battery-powered applications.
3. High Noise Immunity: The transceiver offers a high noise immunity of up to ±20 kV ESD protection, ensuring reliable communication in noisy environments.
4. Fail-Safe Feature: The ST485CDR features a fail-safe mode that keeps the bus in a defined state when the device is not powered or in case of a fault.
5. Auto Direction Control: The device automatically detects the direction of data flow, eliminating the need for external control signals.
6. Wide Operating Voltage Range: The transceiver operates over a wide supply voltage range of 4.75V to 5.5V, making it suitable for various applications.
7. Small Package: The ST485CDR is available in a compact SOIC-8 package, making it easy to integrate into space-constrained designs.

Applications:

1. Industrial Control Systems: The ST485CDR is ideal for use in industrial control systems where reliable communication over long distances is required.
2. Building Automation: The device can be used in building automation systems for communication between controllers and various sensors and actuators.
3. Medical Equipment: The low power consumption and high noise immunity make the ST485CDR suitable for medical equipment that requires reliable data communication.
4. Security Systems: The transceiver can be used in security systems for communication between control panels and various security devices.
5. Data Acquisition Systems: The ST485CDR is suitable for data acquisition systems that require long transmission distances and high noise immunity.
6. Telecommunication Equipment: The device can be used in telecommunication equipment for reliable communication between different components.

In summary, the ST485CDR is a reliable and efficient RS-485 transceiver that offers low power consumption, high noise immunity, and a wide operating voltage range. It is suitable for various applications, including industrial control systems, building automation, medical equipment, security systems, data acquisition systems, and telecommunication equipment.