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MAX9021, MAX9022, MAX9024
Micropower, Ultra-Small, Single/Dual/Quad Single-Supply Comparators


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Description
FULL DATA SHEET (PDF, 696kB)
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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

    Key Specifications:   Comparators
    Part Number Number per Pkg. Typ Prop. Delay (ns) Input CMVR to Neg. Rail Min. Total Supply (V) Max. Total Supply (V) Max. Supply Current per Comp. (µA) Typ VOS (mV) Logic Output Latched Outputs Complementary Outputs Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
    MAX9021  1 3000 Yes 2.5 5.5 5 1 CMOS
    TTL
    TTL/CMOS
    No No SC-70/5
    SOT-23/5
    5 -40 to +125 $0.29 @ 1k
    MAX9022  2 SOIC/8
    SOT-23/8
    uMAX/8
    9 $0.42 @ 1k
    MAX9024  4 SOIC/14
    TSSOP/14
    33 $0.62 @ 1k
    See All Comparators (83)
    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.

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

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



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