Flip-Flops - Technical MCQs

Q1:

An RC circuit used in a nonretriggerable 74121 one-shot has an REXT of 49 k and a CEXT of 0.2 F. The pulse width (tW) is approximately ________.

A
280"
6.9 s

B
280"
6.9 ms

C
280"
69 ms

D
280"
690 ms

ANS:B -

280"
6.9 ms

No answer description is available.