MAX6344

6-Pin µP Reset Circuit with Power-Fail Comparator


Please check latest availability status for a specific part variant.

Description

The MAX6342-MAX6345 family of microprocessor (µP) supervisory circuits monitors power supplies in digital systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components.

The MAX6342-MAX6345 provide factory-trimmed VCC reset threshold voltages from 2.33V to 4.63V and operate with supply voltages between +1V and +5.5V. A +1.25V threshold detector allows for a power-fail warning, for low-battery detection, or for monitoring another power supply. The MAX6342 contains an active-low MR input and an active-low push-pull reset. The MAX6343 and MAX6344 are identical to the MAX6342 except they provide an active-low, open-drain reset and an active-high, push-pull reset, respectively. The MAX6345 provides a second reset output in place of the active-low MR input to give it an active-high push-pull reset and an active-low push-pull reset.

All of the devices are packaged in a miniature 6-pin SOT23.
MAX6342, MAX6343, MAX6344, MAX6345: Typical Operating Circuit MAX6342, MAX6343, MAX6344, MAX6345: Typical Operating Circuit Enlarge+

Key Features

  • Small 6-Pin SOT23 Package
  • Precision Factory-Set VCC Reset Thresholds Between 2.33V and 4.63V
  • Guaranteed Active-Low RESET Valid to VCC = +1V
  • 100ms min Reset Pulse Width
  • Debounced CMOS-Compatible Manual-Reset Input
  • Voltage Monitor for Power-Fail or Low-Battery Warning

Applications/Uses

  • Embedded Control Systems
  • Multivoltage Systems
  • Network Equipment
  • Portable Battery-Powered Equipment
  • Portable Computing
  • Telecom Equipment
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX6342 
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Push-Pull
85ms to 300msNo Watchdog
Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect
1.540
SOT23/6
$1.46 @1k
MAX6343 
Active Low
Open Drain
SOT23/6
$1.42 @1k
MAX6344 
Active High
Push-Pull
SOT23/6
$1.65 @1k
MAX6345 
Active High
Active Low
Push-Pull
SOT23/6
$1.42 @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.

Technical Documents

Tutorial 720 Keep the Product Working—Microprocessor Supervisors Offer Big Insurance in Small Packages

Quality and Environmental Data

Product Reliability Reports: MAX6344.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX6344LUT+
  • MAX6344LUT+T
  • MAX6344MUT+
  • MAX6344MUT+T
  • MAX6344SUT+
  • MAX6344SUT+T
  • 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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