• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 399 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

Original question:

SN65HVD1471: Hardware interface with microcontroller

SN65HVD1471: Hardware interface with microcontroller

user4764564
Intellectual 380 points
Part Number: SN65HVD1471

Hi...

        At the differential pair of SN65HVD1471 i.e. A,B,Y,Z pins is there any need to connect some resistors? If yes could you please mention the specification.

And R pin of transceiver is denoted as digital output in datasheet, so how to connect the Transmitter pin of micro controller?, to R or D of SN65HVD1471?

  • 0
    TI__Guru 50185 points
    Hi,

    Termination resistors should be used between each differential pair (A to B and Y to Z) at each cable end (first and last device on the bus). See section 10.1, figure 30 on the datasheet. The value of these resistors should match the characteristic impedance of the cable being used. This value for most twisted pair cables is 120-Ohm.

    The R pin can connect to a 3.3V digital input of a micro-controller to read the data received by the transceiver (on pins A and B). The D pin can connect to digital output of a micro-controller to drive the transceiver output (pins Y and Z).

    Let me know if this makes sense.

    Regards,
    Eric