MAX6314

68HC11/Bidirectional-Compatible µP Reset Circuit

Industry's Only Motorola 68HCxx/Bidirectional-Compatible SOT Reset IC


Please check latest availability status for a specific part variant.

Description

The MAX6314 low-power CMOS microprocessor (µP) supervisory circuit is designed to monitor power supplies in µP and digital systems. The MAX6314's active-low RESET output is bidirectional, allowing it to be directly connected to µPs with bidirectional reset inputs, such as the 68HC11. It provides excellent circuit reliability and low cost by eliminating external components and adjustments. The MAX6314 also provides a debounced manual reset input.

This device performs a single function: it asserts a reset signal whenever the VCC supply voltage falls below a preset threshold or whenever manual reset is asserted. Reset remains asserted for an internally programmed interval (reset timeout period) after VCC has risen above the reset threshold or manual reset is deasserted.

The MAX6314 comes with factory-trimmed reset threshold voltages in 100mV increments from 2.5V to 5V. Preset timeout periods of 1ms, 20ms, 140ms, and 1120ms (minimum) are also available. The device comes in a SOT143 package.

For a µP supervisor with an open-drain reset pin, see the MAX6315 data sheet.
MAX6314: Typical Operating Circuit MAX6314: Typical Operating Circuit Enlarge+

Key Features

  • Small SOT143 Package
  • Active-Low RESET Output Simplifies Interface to Bidirectional Reset I/Os
  • Precision Factory-Set VCC Reset Thresholds:
    • 100mV Increments from 2.5V to 5V
  • ±1.8% Reset Threshold Accuracy at TA = +25°C
  • ±2.5% Reset Threshold Accuracy over temp.
  • Four Reset Timeout Periods Available:
    • 1ms, 20ms, 140ms, or 1120ms (minimum)
  • Immune to Short VCC Transients
  • 5µA Supply Current
  • Pin-Compatible with MAX811

Applications/Uses

  • Computers: Desktop, Workstation, Server
  • Controllers
  • Critical µP and µC Power Monitoring
  • Intelligent Instruments
  • Portable Battery-Powered Equipment
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX6314 2.5 to 3.3Bidirectional85ms to 300msNo WatchdogManual Reset1.812
SOT23/4
$1.34 @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 939 Choosing Supervisor Outputs

Quality and Environmental Data

Product Reliability Reports: MAX6314.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Topmark Coding MAX6314

CAD Symbols and Footprints

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  • 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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    Type ID PDF Title
    Tutorial 939 Choosing Supervisor Outputs