General Description
The MAX807 microprocessor (µP) supervisory circuit reduces the complexity and number of components needed to monitor power-supply and battery-control functions in µP systems. A 70µA supply current makes the MAX807 ideal for use in portable equipment, while a 2ns chip-enable propagation delay and 250mA output current capability (20mA in battery-backup mode) make it suitable for larger, higher-performance equipment.
   
Features
♦ Precision 4.675V (MAX807L), 4.425V (MAX807M),
    or 4.575V (MAX807N) Voltage Monitoring
♦ 200ms Power-OK/Reset Time Delay
♦ RESET and RESET Outputs
♦ Independent Watchdog Timer
♦ 1µA Standby Current
♦ Power Switching
    250mA in VCC Mode
    20mA in Battery-Backup Mode
♦ On-Board Gating of Chip-Enable Signals;
    2ns CE Gate Propagation Delay
♦ MaxCap® and SuperCap® Compatible
♦ Voltage Monitor for Power Fail
♦ Backup-Battery Monitor
♦ Guaranteed RESET Valid to VCC = 1V
♦ ±1.5% Low-Line Threshold Accuracy 52mV above
    Reset Threshold
   
Applications
    Computers
    Controllers
    Intelligent Instruments
    Critical µP Power Monitoring
    Portable/Battery-Powered Equipment