SR flip flop Design

Discussion in 'General Electronics Chat' started by saint_jay77, Aug 22, 2007.

  1. saint_jay77

    Thread Starter Member

    Oct 19, 2006
    26
    0
    I have a D flip flop (NL17SZ74:http://www.onsemi.com/pub/Collateral/NL17SZ74-D.PDF configured as a 'set/reset' Latch. The 'set' part of the flip flop is set by a momentary push button to latch. What i would like for the reset part is automatically with a single chip solution or circuit, test this part of a circuit for functionality.
    TT
    Set (active low) Reset (active low) Q
    1 Negative going pulse 0 latched
    Negative going Pulse 1 1 latched
    0 0 Keep Previous state
    1 1 Not allowed

    If its not clear i will send a cct diag, but if someone knows a single chip solution that does this it would be great!!!!
     
  2. pebe

    AAC Fanatic!

    Oct 11, 2004
    628
    3
    Do you want repeated presses of the push button to toggle Q?
    If not, can you supply a circuit?
     
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