555 Timer

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Supply voltage4.5 to 15V
Supply current (+5V)3 to 6mA
Supply current (+15V)10 to 15mA
Max. output current200mA
Max. power dissipation600mW
Operating temperature0 to 70ºC
The chips 555 are a family of integrated circuits that are used for signal generation and as timers.

In the time-delay or monostable mode operation, the time interval can be controlled with a resistor and external capacitor. In the astable mode of operation the frecuency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels are two-thirds and one-third, respectively, of the supply voltage applied.
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