SL74HC221 - Dual Monostable Multivibrator
SL74HC221 Dual Monostable Multivibrator The SL74HC221 is identical in pinout to the LS/ALS221.
The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.
There are two trigger inputs, A INPUT (negative edge) and B INPUT (positive edge).
These inputs are valid for rising/falling signals The device may also be triggered by using the CLR input (positiveedge) because of the Schmitt-trigger input; after triggering the output mainta
