The CD dual D flip-flop is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement mode transistors. dual D-type flip-flop is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P- channel [ ]. CMOS Dual ‘D’-Type Flip-Flop. Consists of two identical, independent data-type flip-flops. Each flip-flop has independent data, set, reset, and clock inputs and Q.

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A is grounded and this in turn gives low output at pin 1 Q when positive edge is encountered in the CLK pin of U1: Initially D pin of the U1: Yet another important feature of the IC which enables the bistable operation through two different inputs. The sets of outputs change states when ci in the bistable mode or while setting and resetting the IC, always producing opposite logic levels at any instant. The 3 input pins are the data, set, and reset pins.

The signal may be applied externally through a transistor astable multivibrator or more conventional types using NAND gates or NOR gates. The astable clocks can be witnessed through LED1. If the set pin is 1 and the reset pin is 1 D is Xthen the Q output and the Q output are both 1. The following two tabs change content below. Pin 4 is the reset pin.

This establishes sufficient power to the chip. The signals produces a bistable effect over one of the free outputs, the other being connected to the Data input as explained above. Since the Q and Q outputs are always the inverse of each other, except in the case of when both the set and reset pins are HIGH, the D flip flop can function as a toggle. This means it’s composed of 2 independent flip flops. The circuit shown can be used for toggling any load simply by touching the touch pad.


This process will continue as you press 5 and 8 switches.

CD – Dual D Flip Flop

Therefore, it’s very hands-on and you can really see how a D flip flop operates according to its logic truth table. Gently adjust and fix the IC cd40013 the veroboard somewhere over the center of the board by soldering.

Pin 6 is the set pin. The values to these pins dictate the value of the output pins, Q and Q. Pin 7 is the ground or negative supply input of the IC. So initially all the cd401 have a value of 0 but when we push down on the pushbutton, it then has a value of 1. The 2 output pins are Q and Q.

Below is the truth table for the D flip flop pulled from the datasheet of the chip. The output values, Q and Qwill have values based on the 3 inputs.

The operation of a D type Flip flop is as follows: The is a dual D flip flop chip. D-type flip flops refer to circuits which may have a couple of outputs that change or toggle states in response to triggers applied at the input terminals.


When switch 3 is pressed the positive edge clock is fed to U1: A D flip flop is just a type of flip flop that changes output values according to the input at 3 pins: Flop flops have many applications. This is only case when both outputs will be HIGH.

It outputs a data value of either 0 or 1 from the flip flop. It means it doesn’t matter what logic state the data input is in.

Data Input Pins 5 and 9: How the Circuit Works This circuits through manual pushbutton control. Frank Donald is an Electronics and Communication Engineer who loves building stuff in his free time.

Practical Electronics/IC/4013

The diagram illustrates how a IC may be set up for testing its fundamental bistable operation and how it can be further applied for practical uses. If the set pin is 1 and the reset pin is 0 D is Xthen the Q output is 1 and the Q output is 0. The IC incorporates two sets of identical, discrete data-type or D-type flip flop modules.

B will gives a low signal which in turn turns the PNP transistor ON and therefore the relay gets activated. If we don’t change the input values, then the values at the outputs stay the same. We connect the 2 output pins to LEDs.