Logic Diagram Of Jk Flip Flop

The basic jk flip flop.

Logic diagram of jk flip flop. Jk flip flop to t flip flop. The circuit diagram of the jk flip flop is shown in the figure below. The inputs labeled j and k are the data inputs which used to be s and r inputs in s r flip flop. The four inputs are logic 1 logic 0.

The clock pulse acts as an enable signal for the two inputs. The rs flip flop consists of basic flip flop circuit along with two additional nand gates and a clock pulse generator. Due to the undefined state in the sr flip flop another flip flop is required in electronics. The input labeled clk is the clock input.

Here we considered the inputs of sr flip flop as s j q t and r kq t in order to utilize the modified sr flip flop for 4 combinations of inputs. The circuit diagram of jk flip flop is shown in the following figure. Jk flip flop to d flip flop. The s and r inputs of the rs bistable have been replaced by the two inputs called the j and k input respectively.

A jk flip flop is nothing but a rs flip flop along with two and gates which are augmented to it. It means that the latch s output change with a change in input levels and the flip flop s output only change when there is an edge of controlling signal that control signal is known as a clock signal q. No change and toggle. Four combinations are produced with t and qp.

The output of the gates 3 and 4 remains at logic 1 until the clock pulse input is at 0 this is nothing but the quiescent condition of the flip flop. The input condition of j k 1 gives an output inverting the output state. The conversion table k maps and the logic diagram are given below. This circuit has two inputs j k and two outputs q t q t.

J and k are expressed in terms of t and qp. The ic used is mc74hc73a dual jk type flip flop with reset. It is a 14 pin package which contains 2 individual jk flip flop inside. Here j s and k r.

Jk means jack kilby a texas instrument engineer who invented ic. Outputs q and q are the usual normal and complementary outputs. Digital flip flops are memory devices used for storing binary data in sequential logic circuits latches are level sensitive and flip flops are edge sensitive. A jk flip flop has two inputs similar to that of rs flip flop.

The symbol for a jk flip flop is similar to that of an sr bistable latch as seen in the previous tutorial except for the addition of a clock input. J and k are the actual inputs of the flip flop and t is taken as the external input for conversion. The two inputs of jk flip flop is j set and k reset. Logic symbol for jk flip flop.

The jk flip flop is an improvement on the sr flip flop where s r 1 is not a problem. Above is the pin diagram and the corresponding description of the pins. The operation of jk flip flop is similar to sr flip flop. The circuit diagram of the j k flip flop is shown in fig 2.