555 Timer IC



  • 4.5V to 16V supply
  • 8-pin DIP package
  • Astable or monostable operation
  • Adjustable duty cycle
  • output current: 200mA
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The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The 555 can be used to provide time delays, as an oscillator, and as a flip-flop element. In the time-delay or mono-stable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor.

Pinout of NE555 Timer:-



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555 Timer IC