Philips Semiconductors' NE558 Quad Timers are monolithic timing devices which can be used to produce four independent timing functions. The NE558 output sinks current. These are highly stable, general-purpose controllers that can be used in a monostable mode to produce accurate time delays - from microseconds to hours. In the time delay mode of operation, the time is precisely controlled by one external resistor and one capacitor. A stable operation can be achieved by using two of the four timer sections. The four timer sections in the NE558 are edge-triggered; therefore, when connected in tandem for sequential timing applications, no coupling capacitors are required. Output current capability of 100 mA is provided in both devices. It has a wide supply voltage range of 4,5 to 16 V. Comes in SOT162-1 (SO16) package.
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