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
    I have a D flip flop (NL17SZ74: 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.
    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
    Do you want repeated presses of the push button to toggle Q?
    If not, can you supply a circuit?