PST573

MITSUMI System Reset PST573 System Reset Monolithic IC PST573 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 high reset type system reset IC was developed using high resistance process and low current circuit design technology. 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 10 ranks of detection voltage ICCH=450µA typ. ICCL=1µA typ. 0.65V typ. -6mA typ. 50mV typ. PST573 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 (PST573 M) TO-92A (PST573 ) contains detection voltage rank . * Applications 1. 2. 3. 4. 5. Reset circuits in microcomputers, CPUs and MPUs. Logic circuit reset circuits. Battery voltage check circuits. Back-up power supply switching circuits. Level detection circuits. Pin Assignment 1 2 3 1 2 3 VCC GND VOUT 1 3 1 2 VCC GND VOUT 2 3 TO-92A MMP-3A MITSUMI System Reset PST573 Equivalent Circuit Diagram Absolute Maximum Ratings Item Storage temperature Operating temperature Power supply voltage Allowable loss (Ta=25°C) Symbol TSTG TOPR VCC max. Pd Rating -40~+125 -20~+75 -0.3~10 200(MMP-3A) 300(TO-92A) Units °C °C V mW Electrical Characteristics Item Symbol (T...