CD4042 PDF

The CD quad clocked “D” latch is a monolithic complementary MOS (CMOS) integrated circuit constructed with P- and N-channel enhancement mode. Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise . CD Datasheet, CD Quad Clocked D Latch Datasheet, buy CD

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The most common use of multi-way switching is for lighting systems and placed in the most common areas of a building like hallways, reception area, kitchen, living room and many other.

This IC can be latched at four outputs by giving the clock pulse, so we will control an AC light with four different buttons at four different places.

CD4042 – Quad Latch

Top menu About Us Contact. Click here for the following lesson or in the synopsis envisaged to this end. You can turn ON the light why pressing any of the four switches, which are set on different location in real.

We cd404 also change the rise and fall time of Output by setting Polarity terminal. Electronic forum and Poem. The flip flop inside the CD IC works as per the table given below:. Return to the synopsis. If the polarity set to Low or zeroby giving high to input, the output waveform will rise when the clock pulse get rise. Get Our Weekly Newsletter!

Skip to main content. High of page Preceding page Following page. It is the same when the C1 entry is with the state H and that the C2 entry passes to the state L.

There are four Flip-flops present inside IC, each strobe by a common clock. The supply voltage of the IC is up to 18v max. You note this time that the situation was reversed ; when the C1 entry is on the level Lthe circuit is insensitive with the changes of levels H and L which appear on the entries.

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It memorizes the logical level present at the moment when the C1 entry passes from the level H on the level L. The rocker D used in practice preceding can function as synchronous latch. We can control the Output from any of the Four Switches preset in the circuit. On this subject, you point out that it is advised always to consult the electric diagram to check the exactitude of the connections carried out in practice.

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CD – Quad Latch

The connections of the CD that we have just described are easily controllable on the practical diagram of the figure a like on the electric diagram of the figure b.

The truth table of the IC is given below:. Static page cd402 welcome. To contact the author. Quote and Order boards in minutes on https: CD has four flip-flop inside it, each strobe by a common clock. Then a Relay module is attached to the Q0 output pin 2. With the handling which will follow, you will check the operation of the integrated circuit CD container four circuits latch asynchronous of type D.

You cd402 carry out following connections with the pins of entry of the CD As the relay triggered the bulb or light turns ON and remain in ON state until the switch is released. The logic diagram and truth table of the IC is given below: Log in or register to post Comment.

Form of the perso pages. Forms maths Geometry Physics 1. With the C1 entry on the level H and the C2 entry on the level Lthe circuit memorizes the last logical level present on the entry at the moment which immediately precedes that where fd4042 C1 cd404 passed from the level L on the level H.

The operation of the quadruple latch that you have just examined can ultimately be summarized as follows: By observing the indication of the LEDyou note that the exits do not change a state, but that these last preserve well the state which they had before P0 was not actuated, which means that the circuit memorized the situation existing before the action on P0.

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Therefore, if for cr4042 the Q1 exit is on the level Lexit 1 will be on the level H ; it is the same for Q2 and cd4402, Q3 and 3, Q4 and 4. It indeed memorizes the logical state present on the entry D at the moment of the positive transition applied to entry CLOCK.

CD4042 – CD4042 Quad Clocked D Latch

Top menu About Us Advertise. When Polarity set to High, on giving high cd40042 the output waveform will rise when the clock pulse is in falling state. This is the multi-switch circuit which is taking input from the Data pin D0. Cd44042 taking account of the preceding observations, it is possible to write the first part of the table of operation of the integrated circuit CD deferred in figure 14, and that one summarizes as follows: There are then two entries of validation C1 and C2 communes with the four rockers.

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Now, the circuit given below shows that how we can use CD IC for making an c4042 circuit. Return to the synopsis To contact the author Low of page. With this test, you noted that on each exit of the integrated circuit in question, you find the level present on the corresponding entry.

Multi-Way Switch Circuit Diagram

In this circuit, we are using only one Flip-flop of the IC. After you to be thus ensured that the assembly carried out corresponds to the electric diagram of the figure b, begin the experiment by conforming you to the following indications. When Polarity set to Low, on giving high pulse the output waveform will rise when the clock pulse is in rising state. There are many ways to perform Multi-way Switching.

The flip flop inside the CD IC works as per the table given below: Electronic forum and Infos.