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Original question:

SN65HVD10: RS485 to RS232

SN65HVD10: RS485 & RS232 communication circuit

Kay Chen53
Expert 2225 points

Part Number: SN65HVD10
Other Parts Discussed in Thread: MAX3221,

Hi there:

I'd like to check an application circuit for my customer.

From the attached schematic provided by RD, the SN65HVD10 will transmit to MAX3221, 

Would there be any risk to connect directly?

RS232 and RS485.pdf

  • 0
    TI__Mastermind 25705 points

    Kay,

    Do you mean SN65HVD10 and MAX3221 share a same wire? It's OK to do so, but please be aware that SN65HVD10 bus pins have -9V to 14V abs max. Theoretically RS-232 signal swing from -15V to 15V. However MAX3221 Dout range is much smaller than that, which works with SN65HVD10. Please let me know if you have more questions.

    Regards,

    Hao