HT12D: Output on data pins (D8-D11)

Discussion in 'General Electronics Chat' started by richard3194, Jan 25, 2014.

  1. richard3194

    Thread Starter Member

    Oct 18, 2011
    65
    2
    HT12A - encoder
    http://www.holtek.com/pdf/consumer/2_12ev120.pdf

    HT12D - decoder
    http://www.holtek.com/pdf/consumer/2_12dv120.pdf


    Can someone please tell me what state an output pin would be in on the HT12D decoder after the corresponding data pin is grounded on the encoder?

    I mean, if D8 on the encoder is grounded, what state is D8 at on the decoder?

    I'm not sure what the description is saying on the Pin Description table, for the decoder, where it says, regarding D8-D11, "Output data pins, power-on state is low."

    Does D8 go high, or low when D8 on the encoder is grounded?

    Thanks.

    Assuming HT12A connects to a Tx and HT12D to a Rx.
     
    Last edited: Jan 25, 2014
  2. richard3194

    Thread Starter Member

    Oct 18, 2011
    65
    2
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