STMicroelectronics

ST485CDR  

Drivers, Receivers, Transceivers

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.

ST485CDR Documents

Download datasheets and manufacturer documentation for ST485CDR

PCN :

Product Change Notification 2024-03-16 (PDF)       Product Change Notification (PDF)       PRODUCT / PROCESS CHANGE INFORMATION (PDF)