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Микросхема 74HC123D.653, Два моностабильных мультивибратора с повторным …

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Склад №55 дней27,17руб.25,05руб.24,46руб.23,87руб.23,17руб.22,34руб.21,17руб.19,05руб.

Характеристики

74HC123D.653, Два моностабильных мультивибратора с повторным …The 74HC123D is a dual retriggerable Monostable Multivibrator with a reset. It is pin compatible with low-power Schottky TTL (LSTTL). It comes with an output pulse width control. The Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower input rise and fall times. The output pulse is controlled by three methods, first — the basic pulse is programmed by selection of an external resistor (REXT) and capacitor (CEXT). Second — Once triggered, the basic output pulse width may be extended by retriggering the gated active low-going edge input (nA) or the active high-going edge input (nB). By repeating this process, the output pulse period (nQ = high, nQ = low) can be made as long as desired. Alternatively an output delay can be terminated at any time by a low-going edge on input nRD, which also inhibits the triggering. Third — an internal connection from nRD to the input gates makes it possible to trigger.

• DC triggered from active high or active low inputs
• Retriggerable for very long pulses up to 100% duty factor
• Direct reset terminates output pulse
• Schmitt-trigger action on all inputs except for the reset input
• Complies with JEDEC standard No. 7A