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  • The CD4047B is capable of operating in either the monostable or astable mode. It requires an external capacitor (between pins 1 and 3) and an external resistor (between pins 2 and 3) to determine the output pulse width in the monostable mode, and the output frequency in the astable mode.

    4047 IC Applications

    • Frequency discriminators
    • Timing circuits
    • Time-delay applications
    • Envelope detection
    • Frequency multiplication
    • Frequency division
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    7 Responses to "4047 Datasheet"

    1. ben kofi says: on March 16, 2012 at 6:09 pm

      i want a circuit that uses a relay to turn on my inverter set up when the grid goes off

    2. Adelusi Tosin says: on July 14, 2012 at 12:49 pm

      Is there any way to steady squarewave to sinewave with ic 4047:

    3. charlappiah says: on September 16, 2012 at 8:30 am

      Just saw the site . I will try a few of the projects and will let you the results. Thanks

    4. A huge and a broader schematic for say, 20KW to 30KW enough to power a house with 4 a/cs and a swimming pool schematic diagram will surely make a big impact here in this site and a considerable fee to order of such is a viable outlook not only for this site but to the readers and friends of electroschematics. A true, working and cost efficient diagram or 20KW to 30KW for solar power of 12, 24 or 48v will be a bread and butter. It will be great gift for everybody.

    5. Schema este interesanta.
      Te rog sa-mi spui daca exista calculator pentru acest 4047 cum exista pentru 555 ? Calculand dupa formula nu reusesc sa-l fac sa-mi scoata frecventele dorite.Cred ca are niste limite care nu-mi permit sa jonglez cu R si C in asa fel incat sa obtin 32 KHz si respectiv 42 KHz pe 10 si pe 11.Stiu ca R nu trebuie sa fie mai mica de 10k.
      Daca imi poti trimite un link cu Calculatorul ti-as fi indatorat.
      Multumesc anticipat.

    6. What max frequency can 4047 attain on pin 10 & 11, and for the formula f=1/(8.8*rc) should r be considered in ohms and capacitance in microfarad or farad. For eg. if r=1k and c=0.1 mfd. Plz……

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