free hit counter

Difference between latch and flip-flop

Date: 29 Apr 2015

Latch is a flop-flop in its simplest form capable of storing binary bit 1 or 0. Latch is a bistable device. It can reside in either of two states thanks to feedback arrangement. The main difference latch and flip-flop is in the method used for changing their state.

Latch Flip-flop
Input is asynchronous Input is synchronous
Pulse transition detector does not exist Pulse transition detector is present
Change of output as per input as long as enable signal is asserted Change of output as per input only at triggering point
It is level triggered. That is the output of present state and the input of next state depends on the level: binary input 0 or 1 It is edge triggered