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MAX985, MAX986, MAX989, MAX990, MAX993, MAX994
Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators


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Status
Part Number Status
MAX985 Active: In Production. But some versions of the family are subject to Last Time Buy. See Ordering Information.
MAX986 Active: In Production.
MAX989 Active: In Production.
MAX990 Active: In Production.
MAX993 Active: In Production.
MAX994 Active: In Production.

Description
FULL DATA SHEET (PDF, 352kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail
The MAX985/MAX986/MAX989/MAX990/MAX993/MAX994 single/dual/quad micropower comparators feature low-voltage operation and rail-to-rail inputs and outputs. Their operating voltages range from 2.5V to 5.5V, making them ideal for both 3V and 5V systems. These comparators also operate with ±1.25V to ±2.75V dual supplies. They consume only 11µA of supply current while achieving a 300ns propagation delay.

Input bias current is typically 1.0pA, and input offset voltage is typically 0.5mV. Internal hysteresis ensures clean output switching, even with slow-moving input signals.

The output stage's unique design limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX985/MAX989/MAX993 have a push-pull output stage that sinks as well as sources current. Large internal output drivers allow rail-to-rail output swing with loads up to 8mA. The MAX986/MAX990/MAX994 have an open-drain output stage that can be pulled beyond VCC to 6V (max) above VEE. These open-drain versions are ideal for level translators and bipolar to single-ended converters.

The single MAX985 is available in a chip-scale package (UCSP™), significantly reducing the required PC board area. The single MAX985/MAX986 are available in 5-pin SC70 packages and the dual MAX989/MAX990 are available in 8-pin SOT23 packages.

Key Features   Applications/Uses
  • 11µA Quiescent Supply Current
  • 2.5V to 5.5V Single-Supply Operation
  • Common-Mode Input Voltage Range Extends 250mV Beyond the Rails
  • 300ns Propagation Delay
  • Push-Pull Output Stage Sinks and Sources 8mA Current (MAX985/MAX989/MAX993)
  • Open-Drain Output Voltage Extends Beyond VCC (MAX986/MAX990/MAX994)
  • Unique Output Stage Reduces Output Switching Current, Minimizing Overall Power Consumption
  • 80µA Supply Current at 1MHz Switching Frequency
  • No Phase Reversal for Overdriven Inputs
  • Available in Space-Saving Packages:
    • UCSP (MAX985)
    • SOT23 (MAX985/MAX986/MAX989/MAX990)
    • µMAX® (MAX989/MAX990)

 
  • Digital-Line Receivers
  • Ground/Supply Sensing
  • IR Receivers
  • Level Translators
  • Mobile Communications
  • Portable Battery-Powered Systems
  • Threshold Detectors
  • Window Comparators
  • Zero-Crossing Detectors

    Key Specifications:  Comparators
    Part Number Comp-
    arators
    tPD
    (ns)
    VCMVR Rail to Rail Input VSUPPLY (Total)
    (V)
    VSUPPLY (Total)
    (V)
    ICC per Comp.
    (µA)
    VOS
    (mV)
    VOS
    (mV)
    Logic Out Package/Pins Smallest Available Pckg.
    (mm2)
    Oper. Temp.
    (°C)
    Price
    typ to Neg. Rail min max max typ max max w/pins See Notes
    MAX985  1 300 Yes Yes 2.5 5.5 20 0.5 5
    CMOS
    TTL
    SC70/5
    SOIC(N)/8
    SOT/5
    UCSP/6
    2 -40 to +85 $0.44 @1k
    MAX986  1 Open Drain
    SC70/5
    SOIC(N)/8
    SOT/5
    5 $0.66 @1k
    MAX989  2
    CMOS
    TTL
    µMAX/8
    SOIC(N)/8
    SOT/8
    9 $1.05 @1k
    MAX990  2 Open Drain
    µMAX/8
    SOIC(N)/8
    SOT/8
    9 $1.05 @1k
    MAX993  4
    CMOS
    TTL
    SOIC(N)/14
    TSSOP/14
    33 $1.58 @1k
    MAX994  4 Open Drain
    SOIC(N)/14
    TSSOP/14
    33 $1.58 @1k
    See All Comparators (83)

    Diagram
    MAX985, MAX986, MAX989, MAX990, MAX993, MAX994: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-1229; Rev 4; 2007-02-19
    This page last modified: 2008-03-13


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