Sequential Circuits

D Latch

As we have already discussed that when ever we have both R & S equal to 1 we witness an ambiguous state. Hence to avoid this we have made an arrangement in which we’ll never have both R & S equal. We connect the two inputs with an inverter between them as shown below:

This is the flip-flop which is most widely used in real world applications. This is also called delay Latch. The following table would show the overall functioning of the D-latch:

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