MAX985

Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators


Please check latest availability status for a specific part variant.

Description

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.
MAX985, MAX986, MAX989, MAX990, MAX993, MAX994: Typical Operating Circuit MAX985, MAX986, MAX989, MAX990, MAX993, MAX994: Typical Operating Circuit Enlarge+

Key Features

  • 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)

Applications/Uses

  • Digital-Line Receivers
  • Ground/Supply Sensing
  • IR Receivers
  • Level Translators
  • Mobile Communications
  • Portable Battery-Powered Systems
  • Threshold Detectors
  • Window Comparators
  • Zero-Crossing Detectors
Part NumberComp-
arators
tPD
(ns)
Input RangeVSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Comp.
(µA)
VOS
(mV)
VOS
(mV)
Logic OutOper. Temp.
(°C)
Package/PinsBudgetary
Price
typminmaxmaxtypmaxSee Notes
MAX985 1300
Rail to Rail
to Neg. Rail
2.55.5200.55Push-Pull-40 to +85
SC70/5
SOIC (N)/8
SOT23/5
UCSP (B)/6
$0.55 @1k
MAX986 1Open Drain
SC70/5
SOIC (N)/8
SOT23/5
$0.80 @1k
MAX989 2Push-Pull
SOIC (N)/8
SOT23/8
UMAX/8
$1.15 @1k
MAX990 2Open Drain
SOIC (N)/8
SOT23/8
UMAX/8
$1.12 @1k
MAX993 4Push-Pull
SOIC (N)/14
TSSOP/14
$2.07 @1k
MAX994 4Open Drain
SOIC (N)/14
TSSOP/14
$1.90 @1k
See All Comparators (95)
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.

CAD Symbols and Footprints

  • MAX985EBT+G45
  • MAX985EBT+TG45
  • MAX985ESA+
  • MAX985ESA+T
  • MAX985EUK+
  • MAX985EUK+T
  • MAX985EXK+
  • MAX985EXK+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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