74LVC1G123DC,125

NXP  74LVC1G123DC,125  芯片, 多谐振荡器, 单稳态, VSSOP-8

The 74LVC1G123DC is a single retriggerable Monostable Multivibrator with schmitt trigger inputs. Output pulse width 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 A or the active high-going edge input B. By repeating this process, the output pulse period Q = high can be made as long as desired. Alternatively an output delay can be terminated at any time by a low-going edge on input CLR, which also inhibits the triggering. Third, an internal connection from CLR to the input gates makes it possible to trigger the circuit by a high-going signal at input CLR. Inputs can be driven from either 3.3 or 5V devices. This feature allows the use of these devices as translators in a mixed 3.3 and 5V environment.

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High noise immunity

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CMOS low power consumption

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DC Triggered from active high or active low inputs

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Retriggerable for very long pulses up to 100% duty factor

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Direct reset terminates output pulse

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Schmitt trigger on all inputs

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Power-on-reset on outputs

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Latch-up performance exceeds 100mA

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Direct interface with TTL levels