The most commonly used IC: 555 Timer

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TIMER IC 555

  • The 555 Integrated Circuit was first introduced by Signetics Corporation as Type SE555/NE555.
  • Available in 8-pin circular style TO-99 Can, 8-pin mini-DIP and 14-pin DIP



Features:

  • Operation: +5VDC to +18VDC.
  • Compatible to TTL/CMOS, and op-amp based circuits.
  • Versatile Applications: oscillator, pulse generator, square and ramp wave generator, one-shot multivibrator, safety alarm, timer circuits, traffic light controllers, PWM, etc.
  • 555 timer can provide time delay ranging from microseconds to hours.
Symbol (Source: Wikipedia)


Internal CMOS design of timer IC 555




Datasheet for 555 timer IC ~ +4.5VDC to +18VDC (Source Texas Instruments: click here)

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