The LM555 is a highly stable device for generating accuratetime delays or oscillation. Additional terminals are providedfor triggering or resetting if desired. In the time delay mode ofoperation, the time is precisely controlled by one externalresistor and capacitor.
For astable operation as an oscillator,the free running frequency and duty cycle are accuratelycontrolled with two external resistors and one capacitor.
Thecircuit may be triggered and reset on falling waveforms, andthe output circuit can source or sink up to 200mA or driveTTL circuits.
Package Including:
20pcs*LM555