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Maxim > Products > Supervisors, Voltage Monitors, Sequencers 
DS1233
5V EconoReset


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Data Sheet
FULL DATA SHEET (PDF, 136kB)
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Description

The DS1233 EconoReset monitors two vital conditions for a microprocessor: power supply and external override. A precision temperature-compensated reference and comparator circuit are used to monitor the status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 350ms to allow the power supply and processor to stabilize. The second function of the DS1233 is pushbutton reset control. The DS1233 debounces a pushbutton closure and will generate a 350ms reset pulse upon release.

Key Features
  • Automatically restarts microprocessor after power failure
  • Monitors pushbutton for external override
  • Internal circuitry debounces pushbutton switch
  • Maintains reset for 350ms after VCC returns to an in-tolerance condition or pushbutton released
  • Accurate 5%, 10%, or 15% microprocessor 5V power supply monitoring
  • Reduces need for discrete components
  • Precision temperature-compensated voltage reference and voltage sensor
  • Low-cost TO-92 package or surface-mount SOT-223 package
  • Internal 5kΩpull-up resistor
  • Operating temperature of -40°C to +85°C

Key Specifications:   Supervisors (1 Monitored Voltage)
Part Number Reset Threshold Range (V) Active-Low Reset Output Min. Reset Timeout Range Watchdog Feature Supervisor Features Reset Thresh. Acc. (% @+25°C) Max. ICC (µA) Price**
DS1233  3.3 to 5.5 Open Drain with Internal Pull-Up 250ms to 450ms No Watchdog Manual Reset 2.5 50 $0.61 @ 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.

Application Notes
  		• Application Note 51: How to Save Data During a Power Fail without Corrupting It - DS1233
  		• Application Note 3316: Dallas Semiconductor Microprocessor Supervisor Selection Guide - DS1233

    Evaluation Kits
    none

    Design Guides
  		• Microprocessor Supervisory (PDF)

    Reliability Reports
  		• Reliability Report: DS1233.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: 1-26 of 26

    DS1233 Notes Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    DS1233Y-10/T&R+C05  
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233Z-10+T&R   5V-10% 2500/Reel
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233Z-15   5V-15% Monitor
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233Z-10   5V-10% Monitor
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233Z-5   5V-5% Monitor
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233Z-15/T&R   5V-15% 2500/Reel
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233Z-10/T&R   5V-10% 2500/Reel
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233Z-15+T&R   5V-15% 2500/Reel
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233Z-5/T&R   5V-5%, 2500/Reel
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233Z-10+  
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233Z-5+  
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233Z-15+  
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233Z-5+T&R   5V-5% 2500/Reel
    		ST223;3 pin;
    Dwg: 21-0264 (PDF)
    Use pkgcode/variation: K3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233-15/T&R/STR  
    		TO92;3 pin;
    Dwg: 21-0248 (PDF)
    Use pkgcode/variation: Q3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233-10+  
    		TO92;3 pin;
    Dwg: 21-0248 (PDF)
    Use pkgcode/variation: Q3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233-10+T&R   5V-10% 2000/Reel
    		TO92;3 pin;
    Dwg: 21-0250 (PDF)
    Use pkgcode/variation: Q3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233-5+T&R   5V-5% 2000/Reel
    		TO92;3 pin;
    Dwg: 21-0250 (PDF)
    Use pkgcode/variation: Q3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233-5+   5V-5%
    		TO92;3 pin;
    Dwg: 21-0248 (PDF)
    Use pkgcode/variation: Q3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233-15+T&R   5V-15% 2000/Reel
    		TO92;3 pin;
    Dwg: 21-0250 (PDF)
    Use pkgcode/variation: Q3+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1233-15/T&R   5V-15% 2000/Reel
    		TO92;3 pin;
    Dwg: 21-0250 (PDF)
    Use pkgcode/variation: Q3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233-10/T&R   5V-10%, 2000/Reel
    		TO92;3 pin;
    Dwg: 21-0250 (PDF)
    Use pkgcode/variation: Q3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233-5/T&R   5V-5% 2000/Reel
    		TO92;3 pin;
    Dwg: 21-0250 (PDF)
    Use pkgcode/variation: Q3-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233-15   5V-15% Monitor
    		TO92;3 pin;
    Dwg: 21-0248 (PDF)
    Use pkgcode/variation: Q3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233-10   5V-10%
    		TO92;3 pin;
    Dwg: 21-0248 (PDF)
    Use pkgcode/variation: Q3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233-5   5V-5% Monitor
    		TO92;3 pin;
    Dwg: 21-0248 (PDF)
    Use pkgcode/variation: Q3-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1233-15+  
    		TO92;3 pin;
    Dwg: 21-0248 (PDF)
    Use pkgcode/variation: Q3+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

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    2002-02-22
    This page last modified: 2007-07-25




             


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