THVD1400DR is a 3.3V to 5V, 500kbps, half-duplex RS-485 transceiver launched by Texas Instruments. It adopts an 8-pin SOIC surface mount packaging and is specifically designed for demanding industrial applications.
This transceiver consists of 1 driver and 1 receiver, supporting half-duplex communication. The bus pins feature ±12kV IEC 61000-4-2 contact discharge ESD protection and ±16V bus fault protection, which significantly enhance system reliability and do not require additional external protection components in many applications. Its 1/8 unit load characteristic allows for the connection of up to 256 nodes on a single bus.
Features ：
• Type: RS-485/RS-422 Transceiver, Half-duplex, 1/1 Driver/Receiver
• Data rate: 500 kbps
• Operating voltage: 3V to 5.5V, single power supply
• Bus node count: 1/8 unit load, with a maximum of 256 nodes on the bus.
• ESD protection: ±12kV IEC 61000-4-2 contact discharge, ±16V bus fault protection
• Safety in case of failure: The receiver is equipped with safety features for open circuits, short circuits and idle bus conditions.
• Low power consumption: Typical operating static current is 1.5mA, and standby mode is less than 1µA.
• Operating temperature: -40°C to +125°C
• Package type: SOIC-8 (8 pins, 3.90mm wide), surface mount
• MSL level: Level-1 (unrestricted, unlimited workshop lifespan)
• Environmental compliance: Meets RoHS standards, with NiPdAu surface treatment for pins
Application：
• Industrial Automation and Process Control: PLC, Factory Automation Equipment
• Motor drive and motion control
• Building Automation and HVAC Systems
• Telecommunication and network equipment
• RS-485 Multi-point Communication Network
