
Popular chip MAX232 is used to convert RS232 signals from/to TTL level. MAX485 converts TTL level signals to RS485 standard. RTS line is used to change transmission mode of MAX485. RTS signal is first converted to TTL level by MAX232 then connected to DE and RE/ pins. 2 LED are used to indicate current state of the interface.
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RS485_to_RS232_Converter_Schematic.pdf |
RS485_to_RS232_Converter_Elements.pdf |
RS485_to_RS232_Converter_BOM.pdf |
RS485_to_RS232_Converter_PCB.pdf |
tags: Electronic Circuit project, RS485 to RS232 converter, Digital circuit (src)