View max6457-max6460 datasheet:

19-2534; Rev 0; 7/02 High-Voltage, Low-Current Voltage Monitors in SOT Packages General Description Features The MAX6457–MAX6460 high supply voltage, low-power Wide Supply Voltage Range, 4V to 28V voltage monitors operate over a 4V to 28V supply voltage range. Each device includes a precision bandgap refer- Internal 2.25V ±2.5% Reference ence, one or two low-offset voltage comparators, internal Low Current (3.5µA typ at 12V) threshold hysteresis, power good or reset timeout options, and one or two high-voltage open-drain outputs. Open-Drain N-Channel Output (28V Compliant) Two external resistors (three for window detection) set the Internal Threshold Hysteresis Options trip threshold voltages. (0.5%, 5%, 8.3%) The MAX6457 is a single voltage monitor for undervoltage