Low-Cost, Ultra-Small, 3µA Single-Supply Comparators

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The MAX9075/MAX9077 single/dual comparators are optimized for 3V and 5V single-supply applications. These comparators have a 580ns propagation delay and consume just 3µA per comparator. The combination of low-power, single-supply operation down to 2.1V, and ultra-small footprint makes these devices ideal for all portable applications.

The MAX9075/MAX9077 have a common-mode input voltage range of -0.2V to VCC - 1.2V. Unlike many comparators, there is no differential clamp between the inputs, allowing the differential input voltage range to extend rail-to-rail. All inputs and outputs tolerate a continuous short-circuit fault condition to either rail.

The design of the output stage limits supply-current surges while switching (typical of many other comparators), minimizing power consumption under dynamic conditions. Large internal push-pull output drivers allow rail-to-rail output swing with loads up to 2mA, making these devices ideal for interface with TTL/CMOS logic.

The MAX9075 single comparator is available in 5-pin SC70 and SOT23 packages, while the MAX9077 dual comparator is available in 8-pin SOT23, µMAX®, and SO packages.
MAX9075, MAX9077: Typical Operating Circuit MAX9075, MAX9077: Typical Operating Circuit Enlarge+

Key Features

  • 580ns Propagation Delay from Only 3µA
  • 2.1V to 5.5V Single-Supply Operation
  • Ground-Sensing Inputs
  • Rail-to-Rail Outputs
  • No Output Phase Inversion for Overdriven Inputs
  • No Differential Clamp Across Inputs
  • Available in Ultra-Small Packages
    • 5-Pin SC70 (MAX9075)
    • 8-Pin SOT23 (MAX9077)


  • Battery-Powered Systems
  • Digital-Line Receivers
  • IR Receivers
  • Keyless Entry
  • Threshold Detectors/Discriminators

See parametric specs for Comparators (97)

Part NumberComparatorstPD
Input RangeVSUPPLY (Total)
ICC per Comp.
Logic OutOper. Temp.
(typ)(min)(max)(max)(typ)(max)(See Notes)
MAX9075 1580to Neg. Rail2.15.55.218Push-Pull-40 to +85
$1.05 @1k
MAX9077 2
SOIC (N)/8
$1.15 @1k

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.
Request Reliability Report for: MAX9075 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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