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Outline This IC functions in a variety of CPU systems and other logic systems, to detect power supply voltage and reset the system accurately when power is turned on or interrupted. This ultra-low current consumption low reset type system reset IC has a built-in fixed delay time generating circuit. It is ideal for use in multi-CPU systems because a fast-rising output waveform can be obtained. Features 1. Ultra-low current consumption ICCH=7.5µA typ. ICCL=400µA typ. 2. Low operating limit voltage 0.65V typ. 3. Output current high for ON 30mA typ. 4. Hysteresis voltage provided in detection voltage 50mV typ. 5. Built-in delay circuit with excellent delay time 50mV typ. temperature characteristics 6. 10 ranks of detection voltage PST574 C : 4.5V typ. H : 3.1V typ. D : 4.2V typ. I : 2.9V typ. E : 3.9V typ. J : 2.7V typ. F : 3.6V typ. K : 2.5V typ. G : 3.3V typ. L : 2.3V typ. Applications 1. Reset circuits in microcomputers, CPUs and MPUs (especially multi-CPU sets) 2. Logic circuit reset circuits. 3. Battery voltage check circuits. 4. Back-up power supply switching circuits. 5. Level detection circuits.
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