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Maxim > Products > Supervisors, Voltage Monitors, Sequencers  Automotive 
MAX6340, MAX6421, MAX6422, MAX6423, MAX6424, MAX6425, MAX6426
Low-Power, SC70/SOT µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay


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Data Sheet
FULL DATA SHEET (PDF, 264kB)
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Description
The MAX6340/MAX6421–MAX6426 low-power microprocessor supervisor circuits monitor system voltages from 1.6V to 5V. These devices perform a single function: they assert a reset signal whenever the VCC supply voltage falls below its reset threshold. The reset output remains asserted for the reset timeout period after VCC rises above the reset threshold. The reset timeout is externally set by a capacitor to provide more flexibility.

The MAX6421/MAX6424 have an active-low, push-pull reset output. The MAX6422 has an active-high, push-pull reset output and the MAX6340/MAX6423/MAX6425/MAX6426 have an active-low, open-drain reset output. The MAX6421/MAX6422/MAX6423 are offered in 4-pin SC70 or SOT143 packages. The MAX6340/MAX6424/MAX6425/MAX6426 are available in 5-pin SOT23-5 packages.

Key Features   Applications/Uses
  • Monitor System Voltages from 1.6V to 5V
  • Capacitor-Adjustable Reset Timeout Period
  • Low Quiescent Current (1.6µA typ)
  • Three RESET Output Options
    • Push-Pull Active-Low RESET
    • Push-Pull RESET
    • Open-Drain Active-Low RESET
  • Guaranteed Reset Valid to VCC = 1V
  • Immune to Short VCC Transients
  • Small 4-Pin SC70, 4-Pin SOT143, and 5-Pin SOT23 Packages
  • MAX6340 Pin Compatible with LP3470
  • MAX6424/MAX6425 Pin Compatible with NCP300–NCP303, MC33464/MC33465, S807/S808/S809, and RN5VD
  • MAX6426 Pin Compatible with PST92XX

 
  		• Automotive
  		• Battery-Powered Computers/Controllers
  		• Computers
  		• Critical µP Monitoring
  		• Embedded Controllers
  		• Intelligent Instruments
  		• Medical Equipment
  		• Portable Equipment
  		• Set-Top Boxes

    Key Specifications:   Supervisors (1 Monitored Voltage)
    Part Number Reset Threshold Range (V) Active-Low Reset Output Active-High Reset Output Min. Reset Timeout Range Watchdog Feature Reset Thresh. Acc. (% @+25°C) Max. ICC (µA) Price**
    MAX6340  1.2 to 1.8
    1.8 to 2.5
    2.5 to 3.3
    3.3 to 5.5     		Open Drain  -  15ms to 85ms
    1ms to 15ms
    300ms to 1s
    85ms to 300ms
    <1ms
    >1s
    Adjustable     		No Watchdog 1.5 2.5 $0.91 @ 1k
    MAX6421  Push-Pull  -  $0.91 @ 1k
    MAX6422   -  Push-Pull $0.91 @ 1k
    MAX6423  Open Drain  -  $0.91 @ 1k
    MAX6424  Push-Pull  -  $0.91 @ 1k
    MAX6425  Open Drain  -  $0.91 @ 1k
    MAX6426  Open Drain  -  $0.91 @ 1k
    See All Supervisors (1 Monitored Voltage) (268)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX6340, MAX6421, MAX6422, MAX6423, MAX6424, MAX6425, MAX6426: Typical Operating Circuit
    Typical Operating Circuit

    Evaluation Kits
    none

    Design Guides
  		• Microprocessor Supervisory (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Reliability Report: MAX6421xSxx.pdf MAX6422xSxx.pdf
  		• 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.


    Filter:

    Devices: 1-100 of 1400

    1 2 3 4 5 6 7 8 9 10 11 12 13 14  --->

    MAX6340 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6340UK17+  



    		-40°C to +85°C See data sheet
    MAX6340UK30+T  



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    MAX6340UK33+  



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    MAX6340UK33+T  



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    MAX6340UK34+  



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    MAX6340UK34+T  



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    MAX6340UK35+  



    		-40°C to +85°C See data sheet
    MAX6340UK35+T  



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    MAX6340UK36+  



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    MAX6340UK36+T  



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    MAX6340UK37+T  



    		-40°C to +85°C See data sheet
    MAX6340UK38+  



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    MAX6340UK38+T  



    		-40°C to +85°C See data sheet
    MAX6340UK39+  



    		-40°C to +85°C See data sheet
    MAX6340UK30+  



    		-40°C to +85°C See data sheet
    MAX6340UK27+T  



    		-40°C to +85°C See data sheet
    MAX6340UK27+  



    		-40°C to +85°C See data sheet
    MAX6340UK18+  



    		-40°C to +85°C See data sheet
    MAX6340UK18+T  



    		-40°C to +85°C See data sheet
    MAX6340UK19+  



    		-40°C to +85°C See data sheet
    MAX6340UK19+T  



    		-40°C to +85°C See data sheet
    MAX6340UK20+  



    		-40°C to +85°C See data sheet
    MAX6340UK20+T  



    		-40°C to +85°C See data sheet
    MAX6340UK21+  



    		-40°C to +85°C See data sheet
    MAX6340UK21+T  



    		-40°C to +85°C See data sheet
    MAX6340UK23+  



    		-40°C to +85°C See data sheet
    MAX6340UK24+  



    		-40°C to +85°C See data sheet
    MAX6340UK24+T  



    		-40°C to +85°C See data sheet
    MAX6340UK25+  



    		-40°C to +85°C See data sheet
    MAX6340UK25+T  



    		-40°C to +85°C See data sheet
    MAX6340UK39+T  



    		-40°C to +85°C See data sheet
    MAX6340UK40+  



    		-40°C to +85°C See data sheet
    MAX6340UK45+T  



    		-40°C to +85°C See data sheet
    MAX6340UK47+  



    		-40°C to +85°C See data sheet
    MAX6340UK37+  



    		-40°C to +85°C See data sheet
    MAX6340UK47+T  



    		-40°C to +85°C See data sheet
    MAX6340UK48+  



    		-40°C to +85°C See data sheet
    MAX6340UK48+T  



    		-40°C to +85°C See data sheet
    MAX6340UK49+  



    		-40°C to +85°C See data sheet
    MAX6340UK49+T  



    		-40°C to +85°C See data sheet
    MAX6340UK45+  



    		-40°C to +85°C See data sheet
    MAX6340UK42+  



    		-40°C to +85°C See data sheet
    MAX6340UK50+  



    		-40°C to +85°C See data sheet
    MAX6340UK41+T  



    		-40°C to +85°C See data sheet
    MAX6340UK42+T  



    		-40°C to +85°C See data sheet
    MAX6340UK43+  



    		-40°C to +85°C See data sheet
    MAX6340UK41+  



    		-40°C to +85°C See data sheet
    MAX6340UK40+T  



    		-40°C to +85°C See data sheet
    MAX6340UK43+T  



    		-40°C to +85°C See data sheet
    MAX6340UK44+  



    		-40°C to +85°C See data sheet
    MAX6340UK50  



    		-40°C to +85°C See data sheet
    MAX6340UK25  



    		-40°C to +85°C See data sheet
    MAX6340UK27  



    		-40°C to +85°C See data sheet
    MAX6340UK17  



    		-40°C to +85°C See data sheet
    MAX6340UK24  



    		-40°C to +85°C See data sheet
    MAX6340UK23  



    		-40°C to +85°C See data sheet
    MAX6340UK22  



    		-40°C to +85°C See data sheet
    MAX6340UK21  



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    MAX6340UK20  



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    MAX6340UK19  



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    MAX6340UK22+  



    		-40°C to +85°C See data sheet
    MAX6340UK18  



    		-40°C to +85°C See data sheet
    MAX6340UK49  



    		-40°C to +85°C See data sheet
    MAX6340UK48  



    		-40°C to +85°C See data sheet
    MAX6340UK47  



    		-40°C to +85°C See data sheet
    MAX6340UK42  



    		-40°C to +85°C See data sheet
    MAX6340UK37  



    		-40°C to +85°C See data sheet
    MAX6340UK35  



    		-40°C to +85°C See data sheet
    MAX6340UK34  



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    MAX6340UK33  



    		-40°C to +85°C See data sheet
    MAX6340UK38  



    		-40°C to +85°C See data sheet
    MAX6340UK40  



    		-40°C to +85°C See data sheet
    MAX6340UK41  



    		-40°C to +85°C See data sheet
    MAX6340UK30  



    		-40°C to +85°C See data sheet
    MAX6340UK43  



    		-40°C to +85°C See data sheet
    MAX6340UK44  



    		-40°C to +85°C See data sheet
    MAX6340UK45  



    		-40°C to +85°C See data sheet
    MAX6340UK39  



    		-40°C to +85°C See data sheet
    MAX6340UK36  



    		-40°C to +85°C See data sheet
    MAX6340UK31+T  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK17+T  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6340UK31+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK32+T  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK23+T  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6340UK44+T  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6340UK50+T  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6340UK32+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK16+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK29  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6340UK32  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6340UK31  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6340UK28+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK28  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6340UK26+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK16  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6340UK29+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK46  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6340UK26  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6340UK46+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6340UK17-T  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C See data sheet
    Materials Analysis

    Filter:

    Devices: 1-100 of 1400

    1 2 3 4 5 6 7 8 9 10 11 12 13 14  --->


    More Information
  		• Topmark Coding: MAX6340 MAX6421 MAX6422 MAX6423 MAX6424 MAX6425 MAX6426
  		• New Product Press Release 2002-11-19  2002-07-24 

    Related Products
    MAX6301, MAX6302, MAX6303, MAX6304 +5V, Low-Power, µP Supervisory Circuits with Adjustable Reset/Watchdog
    MAX6412, MAX6413, MAX6414, MAX6415, MAX6416, MAX6417, MAX6418, MAX6419, MAX6420 Low-Power, Single/Dual-Voltage µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay
    MAX6381, MAX6382, MAX6383, MAX6384, MAX6385, MAX6386, MAX6387, MAX6388, MAX6389, MAX6390 SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits

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