Functional Description：

TD541S485H is a half-duplex enhanced transceiver designed for RS–485 data bus networks, which is fully compliant with TIA/EIA-485-Astandardand is suitable for data transmission of up to 20Mbps. Their logic side supports 3.3V and 5V logic level conversion. Receivers have an exceptionallyhighinput impedance, which places only 1/8 of the standard load on a shared bus and up to 256 transceivers. The reliability design of A and B pin is emphasized, including driver output over current protection and enhanced ESD design. The ESDprotectionlevel of A, B pin can be up to 15kV (Human Body Model).

Features：

 Ultra-small, ultra-thin, chip scale DFN package

 Compliant with TIA/EIA-485-A standard

 Integrated isolated 5V power 

 I/O power supply range supports 3.3V and 5V microprocessors(RXD can be directly connected when using 5V microprocessor; When using 3.3V microprocessor, please refer to point 5 in“Suggestions for Power Supply”.) 

 High isolation to 5000VDC

 Bus-Pin ESD protection up to 15kV(HBM) 

 Baud rate up to 20Mbps

 >25kV/us CMTI 

 Low communication delay

 1/8 unit load—up to 256 nodes on a bus

 Bus fail-safe

 Bus driver short circuit protection

 Industrial operating ambient temperature range: -40℃ to +105℃

 Meet EN62368 standards

 Moisture Sensitivity Level (MSL) 3

Applications：

 Industrial Automation

 Building Automation

 Smart Electricity Meter 

 Remote Signal Interaction, Transmission