Description
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 active-high transition Schmitt-trigger input that allo
Features
- 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 seconds Y Hysteresis provided at (B) input for added noise
immunity Y Direct reset terminates output pulse Y Triggerable from CLEAR input Y DTL TTL compatible Y Input clamp diodes
Note 1 The pin-out is identical to ’LS123 but functionally it is not refer to Operating Rules 10 in this datasheet
Functional.
DM74LS221 Datasheet
