555 Timer IC

• 555 timers are monolithic ICs that provide signals to a digital system to change its state. They also can be used as a multivibrator or a form of oscillator, which has two stages and can be output by either of the states. In essence, it’s two amplifier circuits arranged with regenerative feedback.
• High Current Drive Capability (200mA)
• Adjustable Duty Cycle
• Temperature Stability of 0.005%/ °C
• Timing From µSec to Hours
• Turn off Time Less Than 2 µSec
• Precision Timing
• Pulse Generation
• Time Delay Generation
• Sequential Timing

The 555 Timer has three modes of Operation which are

• Monostable
• Astable
• Bistable Mode