The SN54/74LS76A offers individual J, K, Clock Pulse, Direct Set and Di- rect Clear inputs. These dual flip-flops are designed so that when the clock goes HIGH. The SN74LS76A offers individual J, K, Clock Pulse, Direct Set and. Direct Clear inputs. These dual flip-flops are designed so that when the clock goes HIGH, the . SN is a dual in-line JK flip flop IC, i.e. it has two JK flip flops inside it and each can be used individually based on our application.

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The working can be verified with the truth table. If J and K are both low then no change occurs. The 9V battery acts as the input to the voltage regulator LM The timing pulse must be very short because a change in Q before the clock pulse goes off can drive the circuit into an oscillation vlop ” racing “.

SN JK Flip Flop Pinout, Features, Equivalent & Datasheet

Truth table of JK Flip Flop: Index Electronics concepts Digital circuits Electronics Tutorials allaboutcircuits. Inspite of the simple wiring of D type flip-flop, JK flip-flop has a toggling nature. It is a 14 pin package which contains 2 individual JK flip-flop inside. The flip-flops are also called as latching devices meaning it can remember one single bit of data and latch the output based on it, due to this property they are commonly used as shift registers, control registers, storage registers or where ever a small memory is required.


Hence, default input state will be LOW across all the pins except R which is state of normal operation. The JK flip flop is considered to be more suitable for practical application because of its truth table that is the output of the flip flop will be stable for all types of inputs. Thus, the output has two stable states based on the inputs which have been discussed below.

The J-K flip-flop is the most versatile of the basic flip-flops. While this implementation of the J-K flip-flop with four NAND gates works in principle, there are problems that arise with the timing.

This has been an added advantage. That is the pin will held to ground when the button is not pressed and when the button is pressed the pin will be held to supply voltage.

7476 – 7476 Dual J-K Flip-Flop Datasheet

The clock signal here is just a push button but datasheeet be type of pulse like a PWM signal. This toggle application finds extensive use in binary counters. It can also act as a T flip-flop to accomplish toggling action if J and K are tied together. Note that the outputs feed back to the enabling NAND gates.

Due to its versatility they are available as IC packages. This is an application of the versatile J-K flip-flop. The reset button dataasheet be pulled up through a 1K resistor and when grounded will reset the flip-flop.


The positive going transition PGT of the clock enables the switching of the output Q. The major applications of JK flip-flop are Shift registers, storage registers, counters and control circuits.

According to the table, based on the inputs, the output changes its state. The below circuit shows a typical sample connection ji the JK flip-flop. The remaining states are No change states during which the output will similar to previous output state.

J-K Flip-Flop

The clock signal for the JK flip-flop is responsible for changing the state of the output. The truth tables are correct from practical point of view.

Hello clock must be edge trigger. Quote and Order boards in minutes on https: The State 4 output shows that the input changes does not affect under this state.

At a half clop of the clock, on the downward transition, the inverted clock has a positive transition and triggers the slave section.

The transfer signal could be applied to several such cells in series to create a shift register.