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Features and Benefits

  • Reduced Power Requirements
    • Ultra-Low 125nA (typ) Supply Current
    • 1.1V to 5.5V Operating Supply Range
  • Configurable Circuit Enables Flexible Designs
    • Factory-Set Reset Threshold Options from 1.575V to 4.625V in Approximately 100mV Increments
    • Capacitor-Adjustable Reset Timeout
    • Capacitor-Adjustable Watchdog Timeout (MAX16056/MAX16058)
    • Watchdog Timer Capacitor Open Detect Function
    • Optional Watchdog Disable Function (MAX16056/MAX16058)
    • Manual-Reset Input
    • Push-Pull or Open-Drain Active-Low RESET Output Options
  • Integrated Features Increases System Robustness
    • Power-Supply Transient Immunity
    • Guaranteed Active-Low RESET Valid for VCC ≥ 1.1V
  • Saves Board Space
    • 3mm x 3mm TDFN Package

Product Details

The MAX16056–MAX16059 are ultra-low-current 125nA (typ) microprocessor (µP) supervisory circuits that monitor a single system supply voltage. These devices assert an active-low reset signal whenever the VCC supply voltage drops below the factory trimmed reset threshold, manual reset is pulled low, or the watchdog timer runs out (MAX16056/MAX16058). The reset output remains asserted for an adjustable reset timeout period after VCC rises above the reset threshold. Factory-trimmed reset threshold voltages are offered from 1.575V to 4.625V in approximately 100mV increments (see Table 1 in the full data sheet).

These devices feature adjustable reset and watchdog timeout using external capacitors. The MAX16056/MAX16058 contain a watchdog timer with a watchdog select input (WDS) that multiplies the watchdog timeout period by 128. The MAX16057/MAX16059 do not have the watchdog feature.

The MAX16056–MAX16059 are available in either push-pull or open-drain output-type configurations (see the Ordering Information in the full data sheet). These devices are fully specified over the -40°C to +125°C automotive temperature range. The MAX16056/MAX16058 are available in the 8-pin TDFN package, and the MAX16057/MAX16059 are available in the 6-pin TDFN package.


  • Glucose Monitors/Patient Monitors
  • Metering/HVAC
  • MP3 Players/Pagers
  • PDAs/Cell Phones
  • Portable/Battery-Powered Equipment

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Reference Designs (1)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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