![]() This pin can be left hanging, but to ensure the stability of the reference comparator A, usually associated with a capacitor of about 10nF to berorde pin groun control voltage, this pin serves to regulate the stability of the reference voltage negative input (comparator A). ![]() Normally this pin is connected directly to Vcc to prevent reset This pin is connected to a PNP-type transistor gate, so the transistor will be active if given a logic low. reset, the pin that serves to reset the latch inside the IC to be influential to reset the IC work.trigger, negative input from the lower comparators (comparator B) that maintain oscillation capacitor voltage in the lowest 1 / 3 Vcc and set RS flip-flop.Ground, is the input pin of the source of the negative DC voltage.
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