Master Slave D Flip Flop Circuit Diagram

By | August 6, 2022

A Master-Slave D flip-flop is a type of flip-flop that uses two D flip-flops to create a positive-edge triggered, edge-aligned, master-slave flip-flop. The master flip-flop is clocked on the rising edge of the clock signal, while the slave flip-flop is clocked on the falling edge of the clock signal. This creates a flip-flop that is insensitive to glitches on the clock signal.

The circuit diagram for a Master-Slave D flip-flop is shown below.

Master-Slave D Flip-Flop Circuit Diagram

The operation of the Master-Slave D flip-flop is as follows. When the clock signal is low, both Q and Q' are in their reset state (Q = 0 and Q' = 1). When the clock signal goes high, the master flip-flop is clocked and the value of D is transferred to the output Q. The slave flip-flop is not clocked until the clock signal goes low again, at which point the value of Q is transferred to the output Q'. This ensures that the output Q' is always one clock cycle behind the output Q.

Master-Slave D flip-flops are often used in applications where it is important to ensure that the output is not affected by glitches on the clock signal. They are also used in applications where it is necessary to have a positive-edge triggered flip-flop.

Here are some of the advantages of using a Master-Slave D flip-flop:

  • They are insensitive to glitches on the clock signal.
  • They are positive-edge triggered.
  • They are easy to implement in digital logic.

Here are some of the disadvantages of using a Master-Slave D flip-flop:

  • They are more complex than other types of flip-flops.
  • They have a longer propagation delay than other types of flip-flops.

Overall, Master-Slave D flip-flops are a versatile and reliable type of flip-flop that can be used in a variety of applications.


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