View tc51n-series datasheet:

TC51 M 1µA Voltage Detector with Output Delay Features General Description • Precise Detection Thresholds: ±2.0% The TC51 is a very low power, open drain output, CMOS voltage detector with built-in delay. It is • Small Package: 3-Pin SOT-23A particularly well-suited for battery powered applications • Low Supply Current: Typ. 1µA because of its extremely low 1µA operating current and • Wide Detection Range: 1.6V to 6.0V small surface-mount packaging. Each part is laser- • Wide Operating Voltage Range: 0.7V to 10V trimmed to the desired threshold voltage, which can be • Built-in Delay Circuit: 50msec to 200 msec specified from 1.6V to 6.0V. The standard built-in output delay is 50msec-200msec. • Open-Drain Output The device includes a comparator, low-c