SN74LS221 Description
DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS Each multivibrator of the LS221 .SN74LS221 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 triSN74LS221 Applications
* pulse stability will only be limited by the accuracy of external timing components. Jitter-free operation is maintained over the full temperature and VCC ranges for greater than six decades of timing capacitance (10 pF to 10 µF), and greater than one decade of timing resistance (2.0 to 70 kΩ for th
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