General Description
Maxim’s MAX8211 and MAX8212 are CMOS micropower voltage detectors that warn microprocessors (µPs) of power failures. Each contains a comparator, a 1.5V bandgap reference, and an open-drain n-channel output driver. Two external resistors are used in conjunction with the internal reference to set the trip voltage to the desired level. A hysteresis output is also included, allowing the user to apply positive feedback for noise-free output switching.

FEATUREs
♦ µP Power-Fail Warning
♦ Improved 2nd Source for ICL8211/ICL8212
♦ Low-Power CMOS Design
♦ 5µA Quiescent Current
♦ On-Board Hysteresis Output
♦ ±40mV Threshold Accuracy (±3.5%)
♦ 2.0V to 16.5V Supply-Voltage Range
♦ Define Output Current Limit (MAX8211)
♦ High Output Current Capability (MAX8212)

APPLICATIONs
  µP Voltage Monitoring
  Undervoltage Detection
  Overvoltage Detection
  Battery-Backup Switching
  Power-Supply Fault Monitoring
  Low-Battery Detection