| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Number of Pins | 16 Pin |
| Case/Package | SOIC |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Unknown |
| Packaging | Tape & Reel (TR) |
General 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 allows jitter free triggering for inputs with transition rates as slow as 1 volt/second.
●Features
●■A dual, highly stable one-shot
●■Compensated for VCCand temperature variations
●■Pin-out identical to DM74LS123 (Note 1)
●■Output pulse width range from 30 ns to 70 seconds
●■Hysteresis provided at (B) input for added noise immunity
●■Direct reset terminates output pulse
●■Triggerable from CLEAR input
●■DTL, TTL compatible
●■Input clamp diodes
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