The SP490CN is a RS-485 transceiver from Sipex Corporation (now EXAR), designed for robust and reliable data communication in noisy industrial environments. It is a half-duplex transceiver, meaning it can both transmit and receive data, but not simultaneously. The SP490CN is suitable for applications requiring long-distance communication and noise immunity.

Applications

• Industrial control networks
• Building automation systems
• Motor control
• Security systems
• Point-of-sale (POS) systems
• SCADA systems

Features

• RS-485 Standard Compliance: Ensures compatibility with standard RS-485 networks.
• Half-Duplex Operation: Enables efficient data transmission and reception.
• High Data Rate: Supports data rates up to 10 Mbps.
• Low Power Consumption: Minimizes power dissipation.
• Driver Short-Circuit Protection: Protects the driver from damage due to short circuits.
• Thermal Shutdown Protection: Protects the device from overheating.
• High Input Impedance: Allows for connecting multiple transceivers on the same bus.

Benefits

• Robust Communication: Provides reliable data transmission in noisy environments.
• Long-Distance Capability: Enables communication over long distances.
• Versatile Application: Suitable for a wide range of industrial applications.
• Improved System Reliability: Protection features enhance system reliability.
• Reduced Power Consumption: Low power design reduces energy costs.

Additional Details

The SP490CN operates from a 5V supply. Its differential driver outputs and receiver inputs provide excellent noise immunity. The device includes features such as slew-rate limiting to reduce EMI and protect against signal reflections. The SP490CN is available in a DIP package. Its robust design and comprehensive protection features make it a reliable solution for RS-485 communication in demanding industrial environments.