Maxim > Products > Automotive > MAX823, MAX823L, MAX823M, ...
Maxim > Products > Supervisors, Voltage Monitors, Sequencers > MAX823, MAX823L, MAX823M, ...

MAX823, MAX823L, MAX823M, MAX823R, MAX823S, MAX823T, MAX823Y, MAX823Z, MAX824, MAX824L, MAX824M, MAX824R, MAX824S, MAX824T, MAX824Y, MAX824Z, MAX825, MAX825L, MAX825M, MAX825R, MAX825S, MAX825T, MAX825Y, MAX825Z

5-Pin Microprocessor Supervisory Circuits with Watchdog Timer and Manual Reset

Industry's-First SOT Reset ICs with Watchdog and Manual Reset
 Overview   Technical Documents   Ordering Info   Related Products   User Comments (0)   All   


Status Explanations for product status codes

Active: In Production.

Description

The MAX823/MAX824/MAX825 microprocessor (µP) supervisory circuits combine reset output, watchdog, and manual reset input functions in 5-pin SOT23 and SC70 packages. They significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX823/MAX824/MAX825 are specifically designed to ignore fast transients on VCC.

Seven preprogrammed reset threshold voltages are available (see Reset Threshold Table in the full data sheet). All three devices have an active-low reset output, which is guaranteed to be in the correct state for VCC down to 1V. The MAX823 also offers a watchdog input and manual reset input. The MAX824 offers a watchdog input and a complementary active-high reset. The MAX825 offers a manual reset input and a complementary active-high reset. The Selector Guide explains the functions offered in this series of parts.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 5 (PDF, 212kB)
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Key Features

  • Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power Supplies
  • Operating Current:
    • 6µA (MAX823L/M) (SC70)
    • 2µA (MAX825T/S/R/Z/Y) (SC70)
  • Fully Specified Over Temperature
  • 140ms min Power-On Reset
  • Guaranteed active-low RESET Valid to VCC = 1V
  • Power-Supply Transient Immunity
  • Watchdog Timer with 1.6s Timeout (MAX823/MAX824)
  • Manual Reset Input (MAX823/MAX825)
  • No External Components
 

Applications/Uses

  • Automotive Electronics
  • Computers and Controllers
  • Critical µP Monitoring
  • Embedded Controllers
  • Intelligent Instruments
  • Portable Battery-Powered Equipment
   

Key Specifications:

Supervisors (1 Monitored Voltage)
Part Number Reset Thresh.
(V)		 Reset Out tRESET Watchdog Feature Watchdog Timeout Supervisor Features ICC
(µA)		 Budgetary Price
min max See Notes
MAX823 
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Push-Pull
 85ms to 300ms Input (WDI) 1s to 2s Manual Reset 24 $1.15 @1k
MAX824 
Active High
Active Low
Push-Pull
 Input (WDI) 1s to 2s - 24 $1.21 @1k
MAX825 
Active High
Active Low
Push-Pull
 No Watchdog - Manual Reset 12 $1.15 @1k
See All Supervisors (1 Monitored Voltage) (274)
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 prices and delivery, please see the price and availability page or contact an authorized distributor.


  • Active-low reset with manual reset and watchdog timer (MAX823)
  • Active-low reset and active-high reset with watchdog timer (MAX824)
  • Active-low reset and active-high reset with manual reset (MAX825)
    		•

    Diagram

    MAX823, MAX823L, MAX823M, MAX823R, MAX823S, MAX823T, MAX823Y, MAX823Z, MAX824, MAX824L, MAX824M, MAX824R, MAX824S, MAX824T, MAX824Y, MAX824Z, MAX825, MAX825L, MAX825M, MAX825R, MAX825S, MAX825T, MAX825Y, MAX825Z: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes

    Tutorial 279   Supervisory Circuits Keep Your Microprocessor Under Control
    Tutorial 720   Keep the Product Working—Microprocessor Supervisors Offer Big Insurance in Small Packages
    Application Note 1050   Reset Circuit Ensures Valid Supply Voltage
    Application Note 1926   Watchdogs Improve System Reliability—How to Choose the Right Part
    Application Note 3741   Analog ICs for Low Voltage Systems

    Product Guides

    Microprocessor Supervisory (PDF)

    Reliability Reports

    Reliability Report: MAX823.pdf MAX823R.pdf MAX823S.pdf MAX823T.pdf MAX823Z.pdf MAX824L.pdf MAX824M.pdf MAX824S.pdf MAX825T.pdf
    Show FIT data for:
    Request Reliability Report for:

    Software/Models

    MAX823T IBIS Model

    Ordering Information

    Filters: Part Number: Package: Temperature: Tape and Reel Sample
    Devices: 51-100 / 100 <-- Previous   1 2  Next -->
    Part Number Free
    Sample    		 Buy Status Explanations for product status codes Package:
    TYPE PINS FOOTPRINT
    DRAWING  CODE/VAR *     		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX824REUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX824REXK+  
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824REXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824REXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX824SEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824SEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824SEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX824SEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824SEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX824TEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    Part Number Free
    Sample    		 Buy Status Explanations for product status codes Package:
    TYPE PINS FOOTPRINT
    DRAWING  CODE/VAR *     		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX824TEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824TEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX824TEXK+  
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824TEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824TEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX824YEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX824ZEXK+  
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824ZEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX824ZEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825LEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    Part Number Free
    Sample    		 Buy Status Explanations for product status codes Package:
    TYPE PINS FOOTPRINT
    DRAWING  CODE/VAR *     		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX825LEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825LEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825LEXK+  
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825LEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825LEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825MEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825MEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825MEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825MEXK+  
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825MEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    Part Number Free
    Sample    		 Buy Status Explanations for product status codes Package:
    TYPE PINS FOOTPRINT
    DRAWING  CODE/VAR *     		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX825MEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825REUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825REUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825REUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825REXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825SEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825SEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825SEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825SEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825SEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    Part Number Free
    Sample    		 Buy Status Explanations for product status codes Package:
    TYPE PINS FOOTPRINT
    DRAWING  CODE/VAR *     		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX825TEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825TEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825TEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing:21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825TEXK+  
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825TEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825TEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825YEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825YEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX825ZEXK+T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX825ZEXK-T    
    		Active SC70;5 pin;5.3 mm²
    Outline Drawing:21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    Devices: 51-100 / 100 <-- Previous   1 2  Next -->

    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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

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    More Information

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    Topmark Coding MAX824
    Topmark Coding MAX825
    New Product Press Release [ 2000-10-05 ]


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    Document Ref.: 19-0487 Rev 5; 2006-03-14
    This page last modified: 2010-05-14

     


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