NE555 概述

The NE555 monolithic timing circuit is a highly stablecontroller capableof producing accuratetime delaysor oscillation. In the time delay mode of operation,the time is precisely controlled by one external re-sistor and capacitor.For a stableoperation as an os-cillator, the free running frequency and the duty cy-cle are both accurately controlled with two externalresistors and one capacitor. The circuit may be trig-gered and reset on falling waveforms, and the out-put structure can source or sink up to 200mA. TheNE555 is available in plastic and ceramic minidippackage and in a 8-lead micropackage and in metalcan package version.

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