DM74LS221 one-shot equivalent, dual non-retriggerable one-shot.
Y A dual highly stable one-shot
Y Compensated for VCC and temperature variations
Y Pin-out identical to ’LS123 (Note 1) Y Output pulse width range from 30 ns to 70 secon.
The DM74LS221 is a dual monostable multivibrator with Schmitt-trigger input Each device has three inputs permitting the choice of either leading-edge or trailing-edge triggering Pin (A) is an active-low trigger transition input and pin (B) is an acti.
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