• June 14, 2019

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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Another way to look at this circuit is as two J-K flip-flops tied together with the second driven by an inverted clock signal.

According to the table, based on the inputs, the output changes its state. The transfer signal could be applied to several such cells in series to create a shift register. Hello clock must be edge trigger. While this implementation of the J-K flip-flop with four NAND gates works in principle, there are problems that arise with the timing.

JK Flip-Flop Circuit Diagram, Truth Table and Working Explained

Submitted by admin on 17 July A demonstration Video is also given below: Out of the above types only JK and D flip-flops are available in the integrated IC form and also used widely in most of the applications. The clock signal for the JK flip-flop is responsible for changing the state of the output.

The below circuit shows a typical sample connection for the JK flip-flop. The inputs are labeled J and K in honor of the inventor of the device, Jack Kilby. Thus, comparing the flop input and two input NAND gate truth table and applying the inputs as given in JK flip-flop truth table the output can be analysed. Note that the outputs daatsheet back flop the enabling NAND gates.


The working can be verified with the truth table. Thus, JK flip-flop is a controlled Bi-stable latch where the clock signal is the control signal.

The latches can also be understood as Bistable Multivibrator as two stable states. Inspite of the simple wiring of D type flip-flop, JK flip-flop has a toggling nature. If J and K are both high at the clock edge then the output will toggle from one state to the other. Hence, default input state will be LOW across all the pins except R which is state of normal operation.

7476 – 7476 Dual J-K Flip-Flop Datasheet

Tactile Switch — 4No. The 9V battery acts as the input to the voltage regulator LM The changes do not affect the output states, you can verify with the Truth Table above.

The truth tables are correct from practical point of view. The clock signal here is just a push button but can be type of pulse like a PWM signal. The “enable” condition does not persist through the entire positive phase of the clock.

SN JK Flip Flop Pinout, Features, Equivalent & Datasheet

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. Also we have used LED at output, the source has been limited to 5V to control the supply voltage and DC output voltage. The JK flip flops are considered to be the most efficient flip-flop and can be used for certain applications on its own.

In synchronous data transfer between two J-K flip-flopsa transfer signal on the clock input causes transfer from cell A to cell B. Quote and Order boards in minutes on https: Due to its versatility they are available as IC packages. A demonstration Video is also given below:. An example is in which each term represents an individual state.


The term digital in electronics represents the data generation, processing or storing in the form of two states. It is a 14 pin package which contains 2 individual JK flip-flop inside.

TL — Programmable Reference Voltage. So if you are looking for a IC for latching purpose or to act as datasheeet small programmable memory for you project then this IC might be the right choice for you.

J-K Flip-Flop

It can also act as a T flip-flop to accomplish toggling action if J and K are tied together. The below circuit shows a typical sample connection for the JK flip-flop The J and K pins are the input pins for the Flip-Flop and the Q and Q bar pins are the output pins.

That is the pin will held to ground when the button is dlip pressed and when the button is pressed the pin will be held to supply voltage. The reset button should be pulled up through a 1K resistor and when grounded will reset the flip-flop. Hence, the regulated 5V output is used as the Vcc and pin supply to the IC.

Modern ICs are so fast that this simple version of the J-K flip-flop is not practical we put one together in the lab with datasgeet available 4-NAND chip and it was very unstable against racing.

A simplified version of the versatile J-K flip-flop. The State 4 output shows that the input changes does not affect under this state.