SN74LV123APWR

TEXAS INSTRUMENTS  SN74LV123APWR.  芯片, 单稳多谐振荡器, 8.3NS, TSSOP-16

The is a dual retriggerable Monostable Multivibrator designed for 2 to 5.5V VCC operation. It features output pulse-duration control by three methods. In the first method, the A input is low and the B input goes high. In the second method, the B input is high and the A\ input goes low. In the third method, the A\ input is low, the B input is high and the clear CLR/ input goes high. The output pulse duration is programmable by selecting external resistance and capacitance values. The external timing capacitor must be connected between Cext and Rext/Cext positive and an external resistor connected between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. The output pulse duration also can be reduced by taking CLR\ low.

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Support mixed-mode voltage operation on all ports

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Schmitt-trigger circuitry on A\, B and CLR\ inputs for slow input transition rates

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Edge triggered from active-high or active-low gated logic inputs

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Ioff Supports partial-power-down mode operation

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Retriggerable for very long output pulses, up to 100% duty cycle

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Overriding clear terminates output pulse

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Glitch-free power-up reset on outputs

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Latch-up performance exceeds 100mA per JESD 78, Class II

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Green product and no Sb/Br