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74HCT221

Part Number	74HCT221
Manufacturer	nexperia
Description	Dual non-retriggerable monostable multivibrator
Published	Jul 23, 2019
Detailed Description	74HCT221 Dual non-retriggerable monostable multivibrator with reset Rev. 3 — 26 October 2016 Product data sheet 1. G...
Datasheet	74HCT221 PDF File

Overview

74HCT221 Dual non-retriggerable monostable multivibrator with reset Rev.
3 — 26 October 2016 Product data sheet 1.
General description The 74HCT221 is a dual non-retriggerable monostable multivibrator.
Each multivibrator features edge-triggered inputs (nA and nB), either of which can be used as an enable input.
Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse.
Schmitt-trigger input circuitry for the nB inputs allow jitter-free triggering from inputs with slow transition rates, providing the circuit with excellent noise immunity.
Once triggered, the outputs (nQ, nQ) are independent of further transitions of nA and nB inputs.
The output pulse width is defined by the following relationship: tW = 0.
7  CEXT  REXT The output pulses can be terminated by the active LOW reset inputs (nRD).
Pulse width stability is achieved through internal compensation and is virtually independent of VCC and temperature.
In most a...

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