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Maxim > Products > Supervisors, Voltage Monitors, Sequencers 
MAX6443, MAX6444, MAX6445, MAX6446, MAX6447, MAX6448, MAX6449, MAX6450, MAX6451, MAX6452
µP Reset Circuits with Long Manual Reset Setup Period

µP Reset Circuits with Long Manual-Reset Setup Period Eliminate Unwanted Reset Conditions in Front-Panel Applications


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Data Sheet
FULL DATA SHEET (PDF, 276kB)
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Description
The MAX6443-MAX6452 low-current microprocessor reset circuits feature single or dual manual reset inputs with an extended 6.72s setup period. Because of the extended setup period, short switch closures (nuisance resets) are ignored.

On all devices, the reset output asserts when any of the monitored supply voltages drops below its specified threshold. The reset output remains asserted for the reset timeout period (210ms typ) after all monitored supplies exceed their reset thresholds. The reset output is one-shot pulse asserted for the reset timeout period (140ms min) when selected manual reset input(s) are held low for an extended setup timeout period of 6.72s. These devices ignore manual reset transitions of less than 6.72s (typ).

The MAX6443-MAX6448 are single fixed-voltage µP supervisors. The MAX6443/MAX6444 have a single extended manual reset input. The MAX6445/MAX6446 have two extended manual reset inputs. The MAX6447/ MAX6448 have one extended and one immediate manual reset input.

The MAX6449-MAX6452 have one fixed-threshold µP supervisor and one adjustable-threshold µP supervisor. The MAX6449/MAX6450 have two delayed manual reset inputs. The MAX6451/MAX6452 have one delayed and one immediate manual reset input.

The MAX6443-MAX6452 have an active-low RESET with push-pull or open-drain output logic options. These devices, offered in small SOT packages, are fully guaranteed over the extended temperature range (-40°C to +85°C).

Key Features   Applications/Uses
  • Single- or Dual-Supply Voltage Monitors
  • Precision Factory-Set Reset Thresholds from 1.6V to 4.6V
  • Adjustable Threshold to Monitor Voltages Down to 0.63V (MAX6449-MAX6452)
  • Single or Dual Manual Reset Inputs with Extended 6.72s Setup Period
  • Optional Short Setup Time Manual Reset Input (MAX6447/MAX6448 and MAX6451/MAX6452)
  • Immune to Short Voltage Transients
  • Low 6µA Supply Current
  • Guaranteed Valid Reset Down to VCC = 1.0V
  • Active-Low RESET (Push-Pull or Open-Drain) Outputs
  • 140ms (min) Reset Timeout Period
  • Small SOT143 and SOT23 Packages

 
  		• Automotive
  		• Consumer Electronics
  		• DVD Players
  		• Industrial Equipment
  		• Medical Devices
  		• Modems
  		• MP3 Players
  		• Set-Top Boxes

    Key Specifications:   Pushbutton Devices
    Part Number Number of Monitored Voltages Manual Reset Feature MR1 Setup Time MR2 Setup Time Reset Threshold Range (V) Active-Low Reset Output Min. Reset Timeout Range Reset Thresh. Acc. (% @+25°C) Max. ICC (µA) Package Price**
    MAX6443  1 Extended Setup Period 6.72s  -  1.2 to 1.79
    1.8 to 2.49
    2.5 to 3.29
    3.3 to 4.99     		Push-Pull 85ms to 300ms 2.5 16 SOT-143/4 $0.99 @ 1k
    MAX6444  1  -  Open Drain SOT-143/4 $0.99 @ 1k
    MAX6445  1 6.72s Push-Pull SOT-23/5 $1.09 @ 1k
    MAX6446  1 6.72s Open Drain SOT-23/5 $1.09 @ 1k
    MAX6447  1 1µs Push-Pull SOT-23/5 $1.09 @ 1k
    MAX6448  1 1µs Open Drain SOT-23/5 $1.09 @ 1k
    MAX6449  2 6.72s Push-Pull SOT-23/6 $1.50 @ 1k
    MAX6450  2 6.72s Open Drain SOT-23/6 $1.50 @ 1k
    MAX6451  2 1µs Push-Pull SOT-23/6 $1.50 @ 1k
    MAX6452  2 1µs Open Drain SOT-23/6 $1.50 @ 1k
    See All Pushbutton Devices (17)
    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.

    Evaluation Kits
    none

    Design Guides
  		• MICROPROCESSOR SUPERVISORY (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Reliability Report: MAX6447UKxxL.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 360

    1 2 3 4  --->

    MAX6443 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6443US22L+T  



    		-40°C to +85°C See data sheet
    MAX6443US17L+T  



    		-40°C to +85°C See data sheet
    MAX6443US22L+  



    		-40°C to +85°C See data sheet
    MAX6443US17L+  



    		-40°C to +85°C See data sheet
    MAX6443US44L+  



    		-40°C to +85°C See data sheet
    MAX6443US44L+T  



    		-40°C to +85°C See data sheet
    MAX6443US17L  



    		-40°C to +85°C See data sheet
    MAX6443US22L  



    		-40°C to +85°C See data sheet
    MAX6443US44L  



    		-40°C to +85°C See data sheet
    MAX6443US31L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6443US31L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6443US16L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US46L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US16L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US23L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US26L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US46L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US29L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US23L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US26L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US31L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US29L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US16L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US31L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US16L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US29L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US17L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6443US22L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6443US23L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US26L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US29L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US44L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6443US46L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6443US23L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US26L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6443US46L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6444US17L+  



    		-40°C to +85°C See data sheet
    MAX6444US22L+  



    		-40°C to +85°C See data sheet
    MAX6444US22L+T  



    		-40°C to +85°C See data sheet
    MAX6444US31L+  



    		-40°C to +85°C See data sheet
    MAX6444US31L+T  



    		-40°C to +85°C See data sheet
    MAX6444US44L+  



    		-40°C to +85°C See data sheet
    MAX6444US44L+T  



    		-40°C to +85°C See data sheet
    MAX6444US17L+T  



    		-40°C to +85°C See data sheet
    MAX6444US31L  



    		-40°C to +85°C See data sheet
    MAX6444US17L  



    		-40°C to +85°C See data sheet
    MAX6444US44L  



    		-40°C to +85°C See data sheet
    MAX6444US22L  



    		-40°C to +85°C See data sheet
    MAX6444US26L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US23L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US46L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US16L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US29L  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US26L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US23L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US46L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US16L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US29L+  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US16L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US46L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US29L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US29L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US16L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US23L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US26L+T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6444US31L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6444US17L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6444US22L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6444US23L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US26L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US46L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6444US44L-T  
    		SOT-143;4 pin;
    Dwg: 21-0052 (PDF)
    Use pkgcode/variation: U4-1*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX6445 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6445UK44L+  



    		-40°C to +85°C See data sheet
    MAX6445UK17L+T  



    		-40°C to +85°C See data sheet
    MAX6445UK17L+  



    		-40°C to +85°C See data sheet
    MAX6445UK22L+  



    		-40°C to +85°C See data sheet
    MAX6445UK22L+T  



    		-40°C to +85°C See data sheet
    MAX6445UK31L+  



    		-40°C to +85°C See data sheet
    MAX6445UK31L+T  



    		-40°C to +85°C See data sheet
    MAX6445UK44L+T  



    		-40°C to +85°C See data sheet
    MAX6445UK31L  



    		-40°C to +85°C See data sheet
    MAX6445UK44L  



    		-40°C to +85°C See data sheet
    MAX6445UK17L  



    		-40°C to +85°C See data sheet
    MAX6445UK22L  



    		-40°C to +85°C See data sheet
    MAX6445UK46L+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6445UK16L  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6445UK23L  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6445UK26L  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6445UK23L+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6445UK16L+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6445UK26L+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6445UK29L+  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6445UK29L  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6445UK46L  
    		SOT-23;5 pin;
    Dwg: 21-0057 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6445UK17L-T