This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • Resolved

ISO3080: ISO3080 connected for half duplex?

Part Number: ISO3080

Hello all.

We have an application here that mainly uses a slow speed (115kbps) half-duplex long-length RS485 connection. ISO3082 fits perfectly to this applicatiion, however there are cases where it is require to have full-duplex operation using the same board it is allowed to have to modify some jumpers). At first glance, it seems that, by using an ISO3080 I could have both modes using the same chip. I.e.:

a) ISO3080 full-duplex connection: pin14 =A, pin 13 =B, pin 12 = Z, pin 11 = Y.

b) ISO3080 half-duplex connection: pin 14 connected to pin 11 is A, pin 13 connected to pin 12 is B.

Curiously, connection b) is not mentioned in the datasheet. Will it work anyway?

Thank you in advance

  • Hi Dimitrios,

    Yes, the connection scheme that you have proposed will work.
    There should be no issues with this implementation. Please make sure that the termination resistors are placed properly for both configurations.

    Regards,
    Anand Reghunathan
  • In reply to Anand Reghunathan:

    Thank you very much

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.