Digital Electronics - Flip-Flops - Discussion
Discussion Forum : Flip-Flops - General Questions (Q.No. 45)
45.
An RC circuit used in a 74122 retriggerable one-shot has an REXT of 100 k
and a CEXT of 0.005 
F. The pulse width is ________.
and a CEXT of 0.005 F. The pulse width is ________.70 s
s16 s
s160 s
s32 s
sDiscussion:
12 comments Page 2 of 2.
Pranav said:
9 years ago
General formula for pulse width is k*R*C.
We have to choose 'k' accordingly,
For monostable K=1.1
For a stable K = 0.69
For 74122, it is said that we should use k= 0.32.
We have to choose 'k' accordingly,
For monostable K=1.1
For a stable K = 0.69
For 74122, it is said that we should use k= 0.32.
Vince Patrick said:
6 years ago
Thanks @Ram!
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