The IMP811/IMP812 are low-power supervisors designed to monitorvoltage levels of 3.0V, 3.3V and 5.0V power supplies in low-powermicroprocessor (μP), microcontroller (μC) and digital systems. Each featuresa debounced manual reset input. The IMP811/812 are improveddrop-in replacements for the Maxim MAX811/812 with extendedtemperature specifications to 105°C.A reset signal is issued if the power supply voltage drops below a presetthreshold and is asserted for at least 140ms after the supply has risenabove the reset threshold. The IMP811 has an active-low output RESETthat is guaranteed to be in the correct state for VCC down to 1.1V. TheIMP812 has an active-high output RESET. The reset comparator isdesigned to ignore fast transients on VCC .Low power consumption makes the IMP811/IMP812 ideal for use inportable and battery-operated equipment. Available in a compact 4-pinSOT143 package, the devices use minimal board space.
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