INVERTED_MONO

Published:2009/7/1 20:03:00 Author:May | From:SeekIC

Connection shown for 555 timer accepts positive trigger pulses and delivers negative output pulses. Duty cycies above 99% are possible without jitter. Heavy loads can be driven from pin 7 without loss of accuracy, but excessive loading of pin 3 can affect timing accuracy. Width of output pulse is 1 ms for values of R1 and C1 shown. Trigger must be held, below two-thirds of supply voltage for standby I and raised above two-thirds of supply momentarily (not longer than pulse width) for triggering.-W. G. Jung, IC Timer Cookbook, Howard W. Sams, Indianapolis, IN, 1977, p 89.



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