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THVD1550: DE and /RE pin logic

Part Number: THVD1550

In the application, the DE and /RE pin are usually connected together controlled by MCU IO pin. However, when system is in the noisy environment, it would lead to the DE and /RE pin single are opposite as below table. If this is a case, what is the state? Thanks.

DE

RE

state

0

0

Receive

1

1

Transmit

0

1

?

1

0

?

  • Brian,

    Thanks for bringing this to E2E.

    DE

    RE

    State

    0

    1

    Both driver and receiver are disabled, bus is idle.

    1

    0

    Both driver and receiver are enabled, and the R will follow what is transmitted on the D pin.

    Please let me know if you have any other questions.

    Regards,

    Eric Hackett