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  • The 555 timer datasheet specifies that 555 IC is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor.

    For astable operation as an oscillator, the free running frequency and duty cycle are accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output circuit can source or sink up to 200mA or drive TTL circuits.

    Features from the 555 datasheet

    • Direct replacement for SE555/NE555
    • Timing from microseconds through hours
    • Operates in both astable and monostable modes
    • Adjustable duty cycle
    • Output can source or sink 200 mA
    • Output and supply TTL compatible
    • Temperature stability better than 0.005% per °C
    • Normally on and normally off output
    • Available in 8-pin MSOP package

    555 Timer Applications

    • Precision timing
    • Pulse generation
    • Sequential timing
    • Time delay generation
    • Pulse width modulation
    • Pulse position modulation
    • Linear ramp generator
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    19 Responses to "IC 555 Timer Datasheet"

    1. naresh says: on May 13, 2011 at 6:22 pm

      it’s wonderful give the information about this topic

    2. Thank you for this information
      But you can help me how I can write the function level0 &level 1

    3. i have need solar cct.

    4. could you pl send a timer with NE-555.ic.source 24 v dc.every 2 hours off.after reset on the timer.FOR SPINNING MILL PURPOSE

    5. pls give me ckt using by ne555

      • Jim Keith Jim Keith says: on August 30, 2012 at 3:45 pm

        Check out the Firefly Flasher circuit that I submitted. It uses a variant of the 555 timer. All 555s have the same pin-out and function, but the modes of operation and applications vary greatly. The datasheets often offer numerous circuits.

    6. i want perfect details for mobile detector circuit

    7. sumeet barua says: on November 23, 2012 at 7:49 pm

      i want a project on real time application of ic 555.
      either it can work on pspice or on real hardware basis.
      please send it to my email id

      i will be highly obliged
      thank you

    8. plz giv the complete datasheet..

      1 doubt:: i came to knw ter are ics named
      NE/SA/SE555/SE555C and so..
      are they different?? plz rply.

    9. sir i am student of extc 5th sem ,please give me working and synopsis of each component of earthquake detector i need it for my mini project,.please reply. it is argent.

    10. sir,i am student of entc.plz give me detail information about earthquake detector circuit and use of IC555 Datasheet in this circuit. plz reply fast.plz plz………

    11. shah faisal says: on August 14, 2014 at 4:16 pm

      Sir please give me a ckt which produce 107MHZ frequency by audio input pin and by Mic please help me how can i design this ckt

    12. is there any 555 timer which can run on around 3v to 4v ?

    13. Sir , im Tyct electronics student .can u send me plz . A diagram and detail morning alarm with sensor using 555 ic.timer.. Thank. .you. .it helps alot for me.

    14. Samanvitha M K says: on January 8, 2015 at 1:21 pm

      sir, what is input & output impedance of timer ic NE 555

    15. kamran ahmed says: on March 10, 2015 at 8:14 pm

      sir: how we reset this
      & how much input can we give in it?

    16. I want ic 555 monostable data sheet

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