SP491 Full Duplex RS 485 Transceiver IC SMD Package

SP491 Full Duplex RS 485 Transceiver IC SMD Package 

The SP491 is a full-duplex RS-485/RS-422 transceiver IC designed for high-speed, reliable differential communication in industrial and embedded systems. It integrates both a line driver and receiver in a single device, allowing simultaneous transmission and reception of data over twisted-pair cables.

Operating from a single 5 V supply, the SP491 offers excellent noise immunity and supports long-distance communication, making it ideal for environments with high electrical interference. The surface-mount (SMD) package enables compact PCB layouts and automated assembly.

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Features

• Full-duplex operation with separate driver and receiver
• Compatible with RS-485 and RS-422 standards
• Single 5 V power supply operation
• High data rate capability (up to 5 Mbps)
• Differential signaling for high noise immunity
• Wide common-mode input voltage range
• Driver and receiver enable control pins
• Low power consumption
• Surface-mount SMD package for space-saving designs

Applications

• Industrial automation and control networks
• RS-485 / RS-422 communication systems
• Embedded and microcontroller-based serial interfaces
• Data acquisition systems
• Building automation and HVAC systems
• Telecommunication equipment
• Motor control and robotics communication networks