The DM74121 is a monostable multivibrator featuring bothpositive and negative edge triggering with complementaryoutputs. An internal 2kΩ timing resistor is provided fordesign convenience minimizing component count and layoutproblems. this device can be used with a single externalcapacitor. Inputs (A) are active-LOW trigger transitioninputs and input (B) is and active-HIGH transition Schmitttriggerinput that allows jitter-free triggering from inputs withtransition rates as slow as 1 volt/second. A high immunityto VCC noise of typically 1.5V is also provided by internalcircuitry at the input stage.To obtain optimum and trouble free operation please readoperating rules and one-shot application notes carefullyand observe recommendations.
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