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SN65HVD73: From Full-Duplex to Half-Duplex

Jamie Tseng
Intellectual 2405 points
Part Number: SN65HVD73

Hi Tiers,

The customer is using SN65HVD73 for their previous version and they want to change from Full-Duplex to Half-Duplex.

Could SN65HVD73 achieve Half-Duplex?

If yes, could you provide the reference schematic?

Thanks and best regards,

Jamie

  • 0
    TI__Guru 62910 points

    Jamie,

    Yes, any full-duplex RS-485 transceiver can operate as a half-duplex transceiver as long as it has enable controls (DE and /RE pins).  You just need to make the following connections:

     - Short non-inverting driver output (Y) to non-inverting receiver input (A)

     - Short inverting driver output (Z) to inverting receiver input (B).

    Regards,
    Max