PST574

MITSUMI System Reset PST574 System Reset Monolithic IC PST574 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. 2. 3. 4. 5. Ultra-low current consumption Low operating limit voltage Output current high for ON Hysteresis voltage provided in detection voltage Built-in delay circuit with excellent delay time temperature characteristics 6. 10 ranks of detection voltage ICCH=7.5µA typ. ICCL=400µA typ. 0.65V typ. 30mA typ. 50mV typ. 50mV typ. PST574 C : 4.5V typ. D : 4.2V typ. E : 3.9V typ. F : 3.6V typ. G : 3.3V typ. H : 3.1V typ. I : 2.9V typ. J : 2.7V typ. K : 2.5V typ. L : 2.3V typ. Package MMP-3A (PST574 M) TO-92A (PST574 ) contains detection voltage rank . * Applications 1. 2. 3. 4. 5. Reset circuits in microcomputers, CPUs and MPUs (especially multi-CPU sets) Logic circuit reset circuits. Battery voltage check circuits. Back-up power supply switching circuits. Level detection circuits. Pin Assignment 1 2 3 VCC GND VOUT 1 3 1 2 VCC GND VOUT 2 3 1 2 3 MMP-3A TO-92A MITSUMI System Reset PST574 Equivalent Circuit Diagram Absolute Maximum Ratings Item Storage temperature Operating temperature Power suppl...