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THVD1449: Fehler Datenblatt Pull-Up/Pull-Down Widerstände

Tobias Körger
Prodigy 10 points

Part Number: THVD1449

Guten Tag,

im Datenblatt des THVD1449 ist die Beschaltung des /RE-Pins unterschiedlich dargestellt.

Auf Seite 21 ist der Pin mit einem Pull-Up-Widerstand versehen.

image.png

Auf Seite 23 allerdings mit einem Pull-Down.

image.png

Richtig müsste der Pull-Up-Widerstand sein.

 

Mit freundliche Grüßen

Tobias Körger

  • 0
    TI__Mastermind 24932 points

    Hi Tobias,

    Thanks for reaching out about this! 

    You are correct. They should both indicate that they are pull up resistors so the receiver is disabled. Just note however, that it is acceptable (but not ideal) to have /RE pulled down to GND. Sometimes customers tie both enable pins together to conserve a GPIO pin, where they have to pull down both signals (so the driver is disabled). Ultimately it is up to you, the designer, to pick. 

    Best,

    Ethan