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Maxim > Products > [Supervisors, Voltage Monitors, Sequencers] 
DS1811
5V EconoReset with Open Drain Output


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 128kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The DS1811 (5V) and DS1816 (3.3V) EconoResets are simple three-pin voltage monitors and power-on resets that hold reset for 150ms for stabilization after power returns to tolerance. The voltage monitor uses precision temperature reference and comparator circuits that detect out-of-tolerance conditions and generate an active low reset.

The open-drain output has an internal 5.5kΩ pull-up resistor for use in a wired-AND circuit.

EconoResets replace discrete components and save space, particularly in the new SOT-23 package. They can benefit any system that requires reliable processor operation, especially consumer products like printers, HVAC, energy management, cellular telephones, PDAs, and set-top boxes.

Key Features
  • Voltage monitor for power-fail detection
  • Active low reset
  • 150ms pause for stabilization
  • Efficient open-drain output with internal 5.5kΩ pull-up resistor
  • Maximum quiescent current of 40µA
  • Operating ranges:
    • 5V with 5%, 10% or 15% tolerance
    • -40°C to +85°C

Key Specifications:  Supervisors (1 Monitored Voltage)
Part Number Reset Thresh.
(V)		 Reset Out tRESET Watchdog Feature Reset Thresh. Accur.
(%)		 ICC
(µA)		 Price
Active Low min @ +25°C max See Notes
DS1811  3.3 to 5.5 Open Drain 85ms to 300ms No Watchdog 2.5 40 $0.40 @1k
See All Supervisors (1 Monitored Voltage) (274)

Diagram
DS1811: Block Diagram
Block Diagram

Application Notes
  		• Application Note 3316: Dallas Semiconductor Microprocessor Supervisor Selection Guide - DS1811

    Design Guides
  		• Microprocessor Supervisory (PDF)

    Reliability Reports
  		• Reliability Report: DS1811.pdf

    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: 1-18 of 18

    DS1811 Notes Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    DS1811R-10+T&R   5V-10%  
    		Active SOT;3 pin;8 mm²
    Outline Drawing: 21-0051 (PDF)
    Land Pattern: 90-0179 (PDF)
    Use pkgcode/variation: U3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1811R-15+T&R   5V-15%  
    		Active SOT;3 pin;8 mm²
    Outline Drawing: 21-0051 (PDF)
    Land Pattern: 90-0179 (PDF)
    Use pkgcode/variation: U3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1811R-5+T&R   5V-5%  
    		Active SOT;3 pin;8 mm²
    Outline Drawing: 21-0051 (PDF)
    Land Pattern: 90-0179 (PDF)
    Use pkgcode/variation: U3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1811R-5/T&R   5V-5%  
    		Active SOT;3 pin;8 mm²
    Outline Drawing: 21-0051 (PDF)
    Land Pattern: 90-0179 (PDF)
    Use pkgcode/variation: U3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811R-10/T&R   5V-10%  
    		Active SOT;3 pin;8 mm²
    Outline Drawing: 21-0051 (PDF)
    Land Pattern: 90-0179 (PDF)
    Use pkgcode/variation: U3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811R-15/T&R   5V-15%  
    		Active SOT;3 pin;8 mm²
    Outline Drawing: 21-0051 (PDF)
    Land Pattern: 90-0179 (PDF)
    Use pkgcode/variation: U3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811-5+  
    		Active TO92;3 pin;19.5 mm²
    Outline Drawing: 21-0248 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1811-10+  
    		Active TO92;3 pin;19.5 mm²
    Outline Drawing: 21-0248 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1811-5   5V-5% Monitor  
    		Active TO92;3 pin;19.5 mm²
    Outline Drawing: 21-0248 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811-10   5V-10% Monitor  
    		Active TO92;3 pin;19.5 mm²
    Outline Drawing: 21-0248 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811-15   5V-15% Monitor
    		Active TO92;3 pin;19.5 mm²
    Outline Drawing: 21-0248 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811-5/T&R   5V-5%  
    		Active TO92;3 pin;27.6 mm²
    Outline Drawing: 21-0250 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811-10/T&R   5V-10%  
    		Active TO92;3 pin;27.6 mm²
    Outline Drawing: 21-0250 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811-15/T&R   5V-15%  
    		Active TO92;3 pin;27.6 mm²
    Outline Drawing: 21-0250 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1811-10+T&R   5V-10%  
    		Active TO92;3 pin;27.6 mm²
    Outline Drawing: 21-0250 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1811-15+T&R   5V-15%  
    		Active TO92;3 pin;27.6 mm²
    Outline Drawing: 21-0250 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1811-5+T&R   5V-5%  
    		Active TO92;3 pin;27.6 mm²
    Outline Drawing: 21-0250 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1811-15+  
    		Active TO92;3 pin;19.5 mm²
    Outline Drawing: 21-0248 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Q3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

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    1999-11-19
    This page last modified: 2009-10-23


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