SN54LS221 Datasheet PDF

DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS Each multivibrator of the LS221 features a negative-transition-triggered input and a positive-transition-triggered input either of which can be used as an inhibit input. Pulse triggering occurs at a voltage level and is not related to the transition time of the input pulse. Schmitt-trigger input circuitry for B input allows jitter-free triggering for inputs as slow as 1 volt/ second, prov.

D Dual Versions of Highly Stable SN54121 and SN74121 One Shots D SN54221 and SN74221 Demonstrate Electrical and Switching Characteristics That Are Virtually Identical to the SN54121 and SN74121 One Shots D Pinout Is Identical to the SN54123, SN74123, SN54LS123, and SN74LS123 D Overriding Clear Terminates Output Pulse TYPE SN54221 SN74221 SN54LS221 SN74LS221 MAXIMUM OUTPUT PULSE LENGTH(S) 21 28 49 70 description/ordering information The ’221 an.