The LM809/810 microprocessor supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.
Precise monitoring of 3V, 3.3V, and 5V supply voltages
Superior upgrade to MAX809/810
Fully specified over temperature
140ms min. Power-On Reset pulse width, 240ms typical
Active-low RESET Output (LM809)
Active-high RESET Output (LM810)
Guaranteed RESET Output valid for VCC≥1V
Low Supply Current, 15µA typ.
Power supply transient immunity