Maxim > Products > Amplifiers > MAX9021, MAX9022, MAX9024
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MAX9021, MAX9022, MAX9024

Micropower, Ultra-Small, Single/Dual/Quad Single-Supply Comparators

 Overview   Design Resources   Ordering Info   Related Products   All   

Status Explanations for product status codes

Part Number Status
MAX9021 Active: In Production.
MAX9022 Active: In Production.
MAX9024 Active: In Production. But some versions of the family are Not Recommended for New Designs. See Ordering Information.

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.

Data Sheet

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Key Features

  • 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)
 

Applications/Uses

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

Key Specifications:

Comparators
Part Number Comp-
arators
tPD
(ns)
Input Range VSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Comp.
(µA)
VOS
(mV)
VOS
(mV)
Logic Out Oper. Temp.
(°C)
Budgetary
Price
typ min max max typ max See Notes
MAX9021  1 3000 to Neg. Rail 2.5 5.5 5 1 8 Push-Pull -40 to +125 $0.36 @1k
MAX9022  2 $0.55 @1k
MAX9024  4 $0.64 @1k
See All Comparators (84)

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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.



Diagram

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

Technical Documents

App Note 3444  Light Is On When Power Is Out
App Note 4234  AC-Based Continuity Tester Finds Single-Ended Faults

Product Guides

Amplifiers and Comparators (PDF)

Reliability Reports

Reliability Report: MAX9021.pdf MAX9022.pdf
Show FIT data for:
Request Reliability Report for:

Ordering Information

Filters: Part Number Package: Temperature: Tape and Reel Sample
Part Number Free
Sample
Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR *
Temp RoHS/Lead-Free?
Materials Analysis
MAX9021AUK+  
Active SOT;5 pin;9 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9021AUK+T    
Active SOT;5 pin;9 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9021AUK-T    
Active SOT;5 pin;9 mm²
-40°C to +125°C RoHS/Lead-Free: No
Materials Analysis
MAX9021AXK+  
Active SC-70;5 pin;SC70;
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9021AXK+T    
Active SC-70;5 pin;SC70;5 pin
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9021AXK-T    
Active SC-70;5 pin;SC70;5 pin
-40°C to +125°C RoHS/Lead-Free: No
Materials Analysis
MAX9022AKA+  
Active SOT;8 pin;9 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9022AKA+T    
Active SOT;8 pin;9 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9022AKA-T    
Active SOT;8 pin;9 mm²
-40°C to +125°C RoHS/Lead-Free: No
Materials Analysis
MAX9022ASA    
Active SOIC(N);8 pin;30.9 mm²
-40°C to +125°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
MAX9022ASA+  
Active SOIC(N);8 pin;30.9 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9022ASA+T    
Active SOIC(N);8 pin;30.9 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9022ASA-T    
Active N.SO;8 pin
-40°C to +125°C See data sheet
MAX9022AUA    
Active µMAX;8 pin;15.6 mm²
-40°C to +125°C RoHS/Lead-Free: No
Materials Analysis
MAX9022AUA+  
Active µMAX;8 pin;15.6 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9022AUA+T    
Active µMAX;8 pin;15.6 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9022AUA-T    
Active µMAX;8 pin;15.6 mm²
-40°C to +125°C RoHS/Lead-Free: No
Materials Analysis
MAX9024ASD    
Active SOIC(N);14 pin;54.2 mm²
-40°C to +125°C RoHS/Lead-Free: No
Materials Analysis
MAX9024ASD+  
Active SOIC(N);14 pin;54.2 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9024ASD+T    
Active SOIC(N);14 pin;54.2 mm²
-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
MAX9024ASD-T    
Active N.SO;14 pin
-40°C to +125°C See data sheet
MAX9024AUD    
Active TSSOP;14 pin;33.4 mm²
-40°C to +125°C RoHS/Lead-Free: No
Materials Analysis
MAX9024AUD+  
Active TSSOP;14 pin;33.4 mm²
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9024AUD+T    
Active TSSOP;14 pin
-40°C to +125°C See data sheet
MAX9024AUD-T    
Active TSSOP;14 pin
-40°C to +125°C See data sheet
MAX9024AUD/V+  
NRND TSSOP;
-40°C to +125°C See data sheet
MAX9024AUD/V+T    
NRND TSSOP;
-40°C to +125°C See data sheet

Notes:
  1. Other options and links for purchasing parts are listed at: http://www.maximintegrated.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

Topmark Coding MAX9021
Topmark Coding MAX9022
New Product Press Release   2000-12-27 ]

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Information Index

Overview

 

Design Resources

 

Ordering Info

 

Related Products

 
Description
Key Features
Applications/Uses
Key Specifications
Diagram
Notes and Comments
  Data Sheet
Technical Documents
Evaluation Kits
Reliability Reports
Software/Models
  Price and Availability
Samples
Buy Online
Package Information
Lead-Free Information
  Similar Products by Function
Similar Products by Application
Evaluation Kits
Products with Similar Part Numbers
Products Used With This
 
Document Ref.: 19-1842 Rev 2; 2007-01-18
This page last modified: 2007-06-14