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5-Pin µP Supervisory Circuits with Watchdog and Manual Reset

Versatile, Customizable SOT Reset + Watchdog ICs Offer 3,224 Unique Options

Product Details

The MAX6316–MAX6322 family of microprocessor (µP) supervisory circuits monitors power supplies and microprocessor activity in digital systems. It offers several combinations of push/pull, open-drain, and bidirectional (such as Motorola 68HC11) reset outputs, along with watchdog and manual reset features. The Selector Guide below lists the specific functions available from each device.

These devices are available in 26 factory-trimmed reset threshold voltages (from 2.5V to 5V, in 100mV increments), featuring four minimum power-on reset timeout periods (from 1ms to 1.12s), and four watchdog timeout periods (from 6.3ms to 25.6s). Thirteen standard versions are available with an order increment requirement of 2500 pieces (see Standard Versions table in the full data sheet); contact the factory for availability of other versions, which have an order increment requirement of 10,000 pieces.

The MAX6316–MAX6322 are offered in a miniature 5-pin SOT23 package.

Key Features

  • Integrated Configuration Enables Flexible Designs
    • Available in 26 Reset- Threshold Voltages
      • 2.5V to 5V, in 100mV Increments
    • Four Reset Timeout Periods
      • 1ms, 20ms, 140ms, or 1.12s (min)
    • Four Watchdog Timeout Periods
      • 6.3ms, 102ms, 1.6s, or 25.6s (typ)
    • Four Reset Output Stages
      • Active-High, Push/Pull
      • Active-Low, Push/Pull
      • Active-Low, Open-Drain
      • Active-Low, Bidirectional
  • Integrated Features Increases Robustness
    • Guaranteed Reset Valid to VCC = 1V
    • Immune to Short-Negative VCC Transients
  • Saves Board Space
    • No External Components
    • Small 5-Pin SOT23 Package
    • AEC-Q100 Qualified

Applications/Uses

  • Computers
  • Controllers
  • Embedded Control Systems
  • Intelligent Instruments
  • Portable Battery-Powered Equipment
  • Portable Computers
Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 1.5
Reset Out Active Low
Push-Pull
tRESET (min) 1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Watchdog Feature Input (WDI)
Watchdog Timeout 1s to 2s
<1s
>2s
Supervisor Features Manual Reset
ICC (µA) (max) 12
Package/Pins SOIC(N)/8
Budgetary
Price (See Notes)
$1.94 @1k
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Simplified Block Diagram

MAX6316, MAX6316M, MAX6317, MAX6318, MAX6319, MAX6320, MAX6321, MAX6322: Typical Operating Circuit MAX6316, MAX6316M, MAX6317, MAX6318, MAX6319, MAX6320, MAX6321, MAX6322: Typical Operating Circuit Zoom icon

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Parameters

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 1.5
Reset Out Active Low
Push-Pull
tRESET (min) 1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s
Watchdog Feature Input (WDI)
Watchdog Timeout 1s to 2s
<1s
>2s
Supervisor Features Manual Reset
ICC (µA) (max) 12
Package/Pins SOIC(N)/8
Budgetary
Price (See Notes)
$1.94 @1k

Key Features

  • Integrated Configuration Enables Flexible Designs
    • Available in 26 Reset- Threshold Voltages
      • 2.5V to 5V, in 100mV Increments
    • Four Reset Timeout Periods
      • 1ms, 20ms, 140ms, or 1.12s (min)
    • Four Watchdog Timeout Periods
      • 6.3ms, 102ms, 1.6s, or 25.6s (typ)
    • Four Reset Output Stages
      • Active-High, Push/Pull
      • Active-Low, Push/Pull
      • Active-Low, Open-Drain
      • Active-Low, Bidirectional
  • Integrated Features Increases Robustness
    • Guaranteed Reset Valid to VCC = 1V
    • Immune to Short-Negative VCC Transients
  • Saves Board Space
    • No External Components
    • Small 5-Pin SOT23 Package
    • AEC-Q100 Qualified

Applications/Uses

  • Computers
  • Controllers
  • Embedded Control Systems
  • Intelligent Instruments
  • Portable Battery-Powered Equipment
  • Portable Computers

Description

The MAX6316–MAX6322 family of microprocessor (µP) supervisory circuits monitors power supplies and microprocessor activity in digital systems. It offers several combinations of push/pull, open-drain, and bidirectional (such as Motorola 68HC11) reset outputs, along with watchdog and manual reset features. The Selector Guide below lists the specific functions available from each device.

These devices are available in 26 factory-trimmed reset threshold voltages (from 2.5V to 5V, in 100mV increments), featuring four minimum power-on reset timeout periods (from 1ms to 1.12s), and four watchdog timeout periods (from 6.3ms to 25.6s). Thirteen standard versions are available with an order increment requirement of 2500 pieces (see Standard Versions table in the full data sheet); contact the factory for availability of other versions, which have an order increment requirement of 10,000 pieces.

The MAX6316–MAX6322 are offered in a miniature 5-pin SOT23 package.

Simplified Block Diagram

MAX6316, MAX6316M, MAX6317, MAX6318, MAX6319, MAX6320, MAX6321, MAX6322: Typical Operating Circuit MAX6316, MAX6316M, MAX6317, MAX6318, MAX6319, MAX6320, MAX6321, MAX6322: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal