Functional Description:

TD(H)541S485H-A is a half-duplex enhanced transceiver designed for RS–485 data bus networks, which is fully compliant with TIA/EIA-485-Astandard and is suitable for data transmission of up to 500kbps. In addition, the product features an automatic switching function, that nolonger requiresthe need to pass through the node to send and receive control signals, which to a certain extent, reduces the design complexity. Their logicsidesupports3.3V and 5V logic level conversion. Receivers have an exceptionally high input impedance, which places only 1/8 of the standard load onasharedbusand 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( Specific application refer to “ Use Suggestion ②”) 

 High isolation to 3000VDC (TDH541S485H-A 5000VDC) 

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

 Baud rate up to 500kbps

 >25kV/us CMTI 

 Automatic send and receive data function

 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℃

 Moisture Sensitivity Level (MSL) 3

Applications:

 Industrial Automation

 Building Automation

 Smart Electricity Meter 

 Remote Signal Interaction, Transmission