What is the working of SR latch?

What is the working of SR latch?

SR latch (Set/Reset) works independently of clock signals and depends only upon S and R inputs, so they are also called as asynchronous devices. SR latch can be created in two ways- by using NAND gates and also can be implemented using NOR gates. SR latch created by NAND gates is sometimes called an inverted SR latch. Working of SR NOR latch:

What is the difference between high input SR latch and low latch?

An active-HIGH input SR latch is formed with two cross-coupled NOR gates and an active-LOW input latch is formed with two cross-coupled NAND gate. An SR Latch with two cross-coupled NOR gate is shown in the figure.

What is the SR latch of NOR gate?

So we will use this truth table to understand the SR latch as when one of the input is 1 the output of the NOR gate will be 0. So when S = 0 and R =1 the output Q will be 0 because the input of NOR gate G1 is 1.

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How do you find the next state of SR latch?

If D = 0 → S = 0 & R = 1, then next state Q t + 1 will be equal to ‘0’ irrespective of present state, Q t values. This is corresponding to the second row of SR Latch state table.

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