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Maxim > Products > [Amplifiers and Comparators]  [Automotive] 
MAX9021, MAX9022, MAX9024
Micropower, Ultra-Small, Single/Dual/Quad Single-Supply Comparators


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 696kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX9021/MAX9022/MAX9024 single/dual/quad comparators are optimized for low-power consumption while still providing a fast output response. They are designed for single-supply applications from 2.5V to 5.5V, but can also operate from dual supplies. These comparators have a 3µs propagation delay and consume 2.8µA of supply current per comparator over the -40°C to +125°C operating temperature range. The combination of low-power, single-supply operation down to 2.5V, and ultra-small footprint makes these devices ideal for portable applications.

The MAX9021/MAX9022/MAX9024 have 4mV of built-in hysteresis to provide noise immunity and prevent oscillations even with a slow-moving input signal. The input common-mode range extends from the negative supply to within 1.1V of the positive supply. The design of the comparator-output stage substantially reduces switching current during output transitions, eliminating powersupply glitches.

The MAX9021 single comparator is available in tiny 5-pin SC70 and SOT23 packages. The MAX9022 dual comparator is available in 8-pin SOT23, µMAX®, and SO packages, and the MAX9024 quad comparator is available in 14-pin TSSOP and SO packages.

Key Features   Applications/Uses
  • Low-Cost Solution Available in Space-Saving SC70 Packages (Half the Size of SOT23)
  • Low 2.8µA Supply Current
  • 3µs Propagation Delay
  • Internal 4mV Comparator Hysteresis
  • Comparator Output Swings Rail-to-Rail
  • 2.5 to 5.5V Single-Supply Voltage Range
  • No Phase Reversal for Overdriven Inputs
  • Space-Saving Packages
    • 5-Pin SC70 (MAX9021)
    • 8-Pin SOT23 (MAX9022)
    • 8-Pin µMAX (MAX9022)
    • 14-Pin TSSOP (MAX9024)

 
  		• Battery-Powered
  		• Digital Line Receivers
  		• Keyless Entry Systems
  		• Mobile Communications
  		• Photodiode Preamps
  		• Portable Systems
  		• Sensor-Signal Detection
  		• Threshold Detectors/Discriminators

    Diagram
    MAX9021, MAX9022, MAX9024: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 3444: Light Is On When Power Is Out - MAX9021
  		• Application Note 4234: AC-Based Continuity Tester Finds Single-Ended Faults - MAX9022

    Design Guides
  		• Amplifiers and Sensors (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• 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.


    Devices: 1-24 of 24

    MAX9021 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9021AXK+  
    		Active SC70;5 pin;5 mm²
    Outline Drawing: 21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9021AXK-T    
    		Active SC70;5 pin;5 mm²
    Outline Drawing: 21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9021AXK+T    
    		Active SC70;5 pin;5 mm²
    Outline Drawing: 21-0076 (PDF)
    Land Pattern: 90-0188 (PDF)
    Use pkgcode/variation: X5+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9021AUK-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
    MAX9021AUK+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
    MAX9022 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9022ASA    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9022ASA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX9022ASA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9022ASA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX9022AKA+  
    		Active SOT;8 pin;9 mm²
    Outline Drawing: 21-0078 (PDF)
    Land Pattern: 90-0176 (PDF)
    Use pkgcode/variation: K8+5*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9022AKA-T    
    		Active SOT;8 pin;9 mm²
    Outline Drawing: 21-0078 (PDF)
    Land Pattern: 90-0176 (PDF)
    Use pkgcode/variation: K8-5*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9022AKA+T    
    		Active SOT;8 pin;9 mm²
    Outline Drawing: 21-0078 (PDF)
    Land Pattern: 90-0176 (PDF)
    Use pkgcode/variation: K8+5*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9022AUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9022AUA-T    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9022AUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9022AUA+T    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9024 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9024ASD    
    		Active SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9024ASD-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX9024ASD+  
    		Active SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9024ASD+T    
    		Active SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9024AUD    
    		Active TSSOP;14 pin;33 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0113 (PDF)
    Use pkgcode/variation: U14-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9024AUD-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX9024AUD+  
    		Active TSSOP;14 pin;33 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0113 (PDF)
    Use pkgcode/variation: U14+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9024AUD+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet

    More Information
  		• Topmark Coding: MAX9021 MAX9022
  		• New Product Press Release 2000-12-27 

    Related Products
    MAX9075, MAX9077 Low-Cost, Ultra-Small, 3µA Single-Supply Comparators
    MAX9030, MAX9031, MAX9032, MAX9034 Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators

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    Document Ref.: 19-1842; Rev 2; 2007-01-18
    This page last modified: 2007-06-14


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