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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TL — Programmable Reference Voltage. The term JK flip flop comes after rlop inventor Jack Kilby. If J and K are different then the output Q takes the value of J at the next clock edge. A demonstration Video is also given below:. Truth table of JK Flip Flop: But, the important thing to consider is all these can occur dataheet in the presence of the clock signal. 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.

This is an application of the versatile J-K flip-flop. The below circuit shows a typical tlip connection for nk JK flip-flop. The final output Q then tracks the output of the master section M after a half cycle of the clock. Submitted by admin on 17 July It is a 14 pin package which contains 2 individual JK flip-flop inside.

It can also act as a T flip-flop to accomplish toggling action if J and K are tied together. A demonstration Video is also given below: Whenever the clock signal is LOW, the input is never going to affect the output state. R is already Pulled up so we need to press the button to make it 0.

7476 – 7476 Dual J-K Flip-Flop Datasheet

Out of the above types only Glop and D flip-flops are available in the integrated IC form and also used widely in most of the applications. The output toggle from the previous dataaheet to another state and this process continues for each clock pulse.

When the clock makes a positive transition the master section is triggered but the slave section is not because its clock is inverted. The complete working and all the states are also demonstrated in the Video below.


The “enable” condition does not persist through the entire positive phase of the clock. Quote and Order boards in minutes on https: The output state of the flip flops can be determined from the truth table below. Normally during regular operation of the IC the reset pin will be set high and the clock pulse of known frequency will be fpip to the clock pin, then the value o J and K will be varied based on the input signals and the respective output will be obtained on the Q and Q bar pins.

In synchronous data transfer between two J-K flpia transfer dataeheet on the clock input causes transfer from cell A to cell B. Also we have used LED at output, the source has been limited to 5V to control the supply voltage and DC output voltage.

Above is the pin diagram and the corresponding description of the pins.

The inputs are labeled J and K in honor of the inventor of the device, Jack Kilby. Inspite of the simple wiring of D type flip-flop, JK flip-flop has a toggling nature. Log in or register to post Datasyeet. Hello clock must be edge trigger. Hence, default input state will be LOW across all the pins except R which is state of normal operation.

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

The positive going transition PGT of the clock enables the switching of the output Q. This has been an added advantage. The clock has to be high for the inputs to get active. Due to its versatility they are available as IC packages. The J-K flip-flop is the most versatile of the basic flip-flops. According to the table, based foop the inputs, the output changes its state.

Hence, the regulated 5V output is used flipp the Vcc and pin supply to the IC. In asynchronous data transfer, a transfer pulse may be applied at any time to force the data onto the asychronous set and clear inputs, storing the data regardless of what is happening on the other inputs.

The toggling might be a desired behavior, but generally you would like for the times of toggling to be controlled by the clock pulses as enablers so that you could control and predict the output. The name JK flip-flop is termed from the inventor Jack Kilby from texas instruments. Index Electronics concepts Digital circuits Electronics Tutorials allaboutcircuits. The State 4 output shows that the input changes does not affect under this state.


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

The clock signal for the JK flip-flop is responsible for changing the state of the output.

SN JK Flip Flop Pinout, Features, Equivalent & Datasheet

The clock signal here is ik a push button but can be type of pulse like a PWM signal. The transfer signal could be applied to several such cells in series to create a shift register.

So if you are looking for a IC for latching purpose or to act as a small programmable memory for you project then this IC might be the datqsheet choice for you. Thus, JK flip-flop is a controlled Bi-stable latch where the clock signal is the control signal. The reset button should be filp up through a 1K resistor and when grounded will reset the flip-flop. Hence they are mostly used in counters and PWM generation, etc.

The LEDs used are current limited using Ohm resistor. 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 called ” racing “. This, works like SR flip-flop for the complimentary inputs and the advantage is that this datashewt toggling function. 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 an available 4-NAND chip and it was very unstable against racing.