Flip Flop Freq Divider

Discussion in 'General Electronics Chat' started by Tobias, Jul 18, 2011.

  1. Tobias

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    May 19, 2008
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  2. praondevou

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    Your question is not clear. Which one of the two ICs are u using?
     
  3. MrChips

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    The PDF file you attached is for MC10EL32/MC100EL32. If this is the chip you are actually using then don't expect it to work. This is an emitter-coupled logic (ECL) gate and is not compatible with TTL or CMOS voltages.

    You may want to use a TTL D-flip-flop such as 74LS74 or a CMOS type such as the MC14013B, or 74HC74 etc.
     
  4. Tobias

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  5. MrChips

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    Ok. Make sure that you tie all unused inputs to GND (Vss) including the inputs of the unused flip-flop.
     
  6. praondevou

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    What output signal exactly do you have?
     
    Last edited: Jul 18, 2011
  7. Tobias

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    May 19, 2008
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    Its mainly high. I have a variable power supply. I have tried keeping the square wave at 5v and move the VCC from 5V to 12v. It doesn't change much either. I have a couple of the flip-flops too, so I don't think its a bad component. In a couple hours I will be able to try tying all the un-used inputs to ground. thanks
     
  8. praondevou

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    As Mrchips said: RESET and SET have to be tied to ground.
     
  9. Tobias

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    That did it, thank you. Reset and Set needed to be tied to ground. Thanks again
     
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