This IC functions in a variety of CPU systems and other logic systems, to detect supply voltage and reset the system accurately when the power is turned on or interrupted. It incorporates a fixed-delay time generation circuit. In particular, this IC is a system reset IC which realizes ultra-small size and low current consumption.

1.	Fixed delay time setting by counter timer
2.	Low operating limit voltage	0.65V typ.
3.	Hysteresis voltage provided for detection voltage	50mV typ.
4.	Low current consumption	ICCH=15µA typ.
5.	3 models are available for different delay times.	PST596   50ms PST597   100ms PST598   200ms
6.	Each model has 10 detection voltage ranks.	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.

SOT-25A (PST59XN) (with manual reset pin)

*The box represents a rank of detection voltage.


1. Reset circuits for microcomputers, CPUs and MPUs
2. Reset circuits for logic circuits
3. Battery voltage check circuits
4. Back-up power supply switching circuits
5. Level detection circuits
6. Mechanical reset circuits