Gated S - R Latch

 Gated S - R Latch


  • Gated S - R latches are different from regular S - R latches because they have a special input called "Enable".
  • When the Enable input is HIGH, the latch responds to variations in the S, R inputs.
  • when the enable input is LOW, the latch retains its previous state.


Function Table of the Gated S - R Latch 





Waveforms with Gated S - R Latch



If the above waveforms are applied to Gated S - R latch. Draw the resulting Q waveform assuming Q starts RESET(0). 

  • The Q resulting waveform  is as follows.













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