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Maxim > Products > Supervisors, Voltage Monitors, Sequencers 
MAX6394
High-Accuracy µP Reset Circuit

µP Supervisor Provides the Highest Accuracy at 1%


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Data Sheet
FULL DATA SHEET (PDF, 132kB)
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Description
The MAX6394 low-power CMOS microprocessor (µP) supervisory circuit is designed to monitor power supplies in µP and digital systems. It offers excellent circuit reliability by providing 1% accurate thresholds over temperature and by eliminating external components and adjustments. The MAX6394 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. Active-low 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 MAX6394's open-drain active-low RESET output can be pulled up to a voltage higher than VCC.

The MAX6394 comes with factory-trimmed reset threshold voltages from 2.4V to 4.8V. Preset timeout periods of 0.7ms, 14ms, 105ms, and 826ms are also available. The device comes in a SOT143 package.

Key Features   Applications/Uses
  • ±0.6% Threshold Accuracy at TA = +25°C
  • ±1.0% Threshold Accuracy from -40°C to +125°C
  • Small SOT143 Package
  • Open-Drain Active-Low RESET Output Can Exceed VCC
  • Precision, Factory-Set VCC Reset Thresholds: Nine Options from 2.4V to 4.8V
  • Four Reset Timeout Periods Available: 0.7ms, 14ms, 105ms, and 826ms (minimum)
  • Immune to Short VCC Transients
  • 5µA Supply Current

 
  		• Computers
  		• Controllers
  		• Critical µP and µC Power Monitoring
  		• Intelligent Instruments
  		• Portable/Battery-Powered Equipment

    Diagram
    MAX6394: Typical Operating Circuit
    Typical Operating Circuit

    Evaluation Kits
    none

    Design Guides
  		• Microprocessor Supervisory (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-72 of 72

    MAX6394 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6394US480D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US455D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6394US455D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US455D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US455D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US455D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US445D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US445D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US317D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US317D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US300D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US300D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US240D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US294D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US445D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US317D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US317D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US455D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6394US455D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US480D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US480D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6394US480D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6394US480D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US480D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US480D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US480D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US470D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US470D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US470D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US470D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US470D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US470D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US470D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US470D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US455D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US445D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US317D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US240D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US240D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US445D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US317D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US310D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6394US445D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US300D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US240D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US310D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6394US310D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US310D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US294D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US294D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US317D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US240D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6394US317D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US240D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US294D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US300D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US300D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US300D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US300D4+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US300D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US310D1+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US310D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US310D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US310D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US294D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US445D2+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US240D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6394US294D2+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US294D1+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US294D3+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US240D4+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6394US445D3+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +125°C See data sheet
    Materials Analysis

    More Information
  		• Topmark Coding: MAX6394
  		• New Product Press Release 2008-05-22 

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    Document Ref.: 19-3202; Rev 0; 2008-02-12
    This page last modified: 2008-04-09




             


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