Fundamentals of Digital Electronics by Dhanasekharan Natarajan

Author:Dhanasekharan Natarajan
Language: eng
Format: epub
ISBN: 9783030361969
Publisher: Springer International Publishing

The logic High output signal of 555 Timer could be terminated by applying negative-going pulse to the reset pin (pin-4) of the IC. For example, if td is designed as 10 ms, the logic High state could be forced to change to logic Low state before 10 ms by applying reset signal to pin-4. If reset requirement does not exist, the reset pin should be connected to VCC to avoid false triggering.

7.6 Monostable Multivibrators

Although Timer 555 IC could be used for monostable operation, standard ICs are available as non-retriggerable and retriggerable monostable multivibrators with added features. The devices are known as one-shot devices. ICs 74121 and 74123 are examples of devices for non-retriggerable and retriggerable monostable multivibrators respectively. The ICs have Schmitt trigger inputs to output jitter-free signals. The operations and the applications of the ICs are presented.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.