MAX706R

+3V Voltage Monitoring, Low-Cost, µP Supervisory Circuits


Please check latest availability status for a specific part variant.

Description

The MAX706P/R/S/T, MAX706AP/AR/AS/AT, and MAX708R/S/T microprocessor (µP) supervisory circuits reduce the complexity and number of components required to monitor +3V power-supply levels in +3V to +5V µP systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components.

The MAX706P/R/S/T and MAX706AP/AR/AS/AT supervisory circuits provide the following four functions:
    1) A reset output during power-up, power-down, and brownout conditions.
    2) An independent watchdog output that goes low if the watchdog input has not been toggled within 1.6s.
    3) A 1.25V threshold detector for power-fail warning, low-battery detection, or for monitoring a power supply other than the main supply.
    4) An active-low, manual-reset input.
The only difference between the MAX706R/AR, MAX706S/AS, and MAX706T/AT is the reset-threshold voltage levels, which are 2.63V, 2.93V, and 3.08V, respectively. All have active-low reset output signals. The MAX706P/AP are identical to the MAX706R/AR, except the reset output signal is active-high. The watchdog timer function for the MAX706AP/AR/AS/AT disables when the WDI input is left open or connected to a high-impedance state of a low-leakage tri-state output.

The MAX708R/S/T provide the same functions as the MAX706R/S/T and MAX706AR/AS/AT except they do not have a watchdog timer. Instead, they provide both active-low RESET and RESET outputs. As with the MAX706, devices with R, S, and T suffixes have reset thresholds of 2.63V, 2.93V, and 3.08V, respectively.

These devices are available in 8-pin SO, DIP, and µMAX® packages and are fully specified over the operating temperature range.
MAX706AP, MAX706AR, MAX706AS, MAX706AT, MAX706P, MAX706R, MAX706S, MAX706T, MAX708R, MAX708S, MAX708T: Pin Configuration MAX706AP, MAX706AR, MAX706AS, MAX706AT, MAX706P, MAX706R, MAX706S, MAX706T, MAX708R, MAX708S, MAX708T: Pin Configuration Enlarge+

Key Features

  • µMAX Package, Small 8-Pin SO
  • Precision Supply-Voltage Monitors
    • 2.63V (MAX706P/R, MAX706AP/AR, and MAX708R)
    • 2.93V (MAX706S, MAX706AS, and MAX708S)
    • 3.08V (MAX706T, MAX706AT, and MAX708T)
  • 200ms Reset Time Delay
  • Debounced TTL/CMOS-Compatible Manual Reset Input
  • 100µA Quiescent Current
  • WDI Disable Feature (MAX706AP/AR/AS/AT)
  • Watchdog Timer: 1.6s Timeout
  • Reset Output Signal:
    • Active-High Only (MAX706P, MAX706AP)
    • Active-Low Only (MAX706R/S/T, MAX706AR/AS/AT)
    • Active-High and Active-Low (MAX708R/S/T)
  • Voltage Monitor for Power-Fail or Low-Battery Warning
  • 8-Pin Surface-Mount Package
  • Guaranteed active-low RESET Assertion to VCC = 1V

Applications/Uses

  • Battery-Powered Equipment
  • Computers
  • Controllers
  • Critical µP Power Monitoring
  • Intelligent Instruments
  • Portable Instruments
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX706P 2.5 to 3.3
Active High
Push-Pull
85ms to 300ms
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect
2.5200
PDIP/8
SOIC (N)/8
UMAX/8
$1.82 @1k
MAX706R 
Active Low
Push-Pull
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
CDIP/8
DICE SALES
PDIP/8
SOIC (N)/8
UMAX/8
$1.77 @1k
MAX706S 
Active Low
Push-Pull
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
CDIP/8
PDIP/8
SOIC (N)/8
UMAX/8
$1.77 @1k
MAX706T 
Active Low
Push-Pull
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
CDIP/8
PDIP/8
SOIC (N)/8
UMAX/8
$1.77 @1k
MAX708R 
Active High
Active Low
Push-Pull
No Watchdog-
PDIP/8
SOIC (N)/8
UMAX/8
$2.01 @1k
MAX708S 
Active High
Active Low
Push-Pull
No Watchdog-
CDIP/8
PDIP/8
SOIC (N)/8
UMAX/8
$3.01 @1k
MAX708T 
Active High
Active Low
Push-Pull
No Watchdog-
CDIP/8
PDIP/8
SOIC (N)/8
UMAX/8
$2.58 @1k
See All Supervisors (1 Monitored Voltage) (261)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Request Reliability Report for: MAX706R 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX706R PSPICE Macromodel
  • CAD Symbols and Footprints

  • MAX706RCSA+
  • MAX706RCUA+
  • MAX706RCUA+T
  • MAX706RCUA-T
  • MAX706REPA+
  • MAX706RESA+
  • MAX706RESA+T
  • MAX706RESA/GG8
  • MAX706REUA+
  • MAX706REUA+T
  • MAX706REUA-T
  • MAX706RMJA
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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