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Maxim continues to innovate with the recent introduction of low pin count comparators that do not require a separate power pin. We offer advanced products in the following categories.

Integrated Reference Comparators
These general-purpose comparators have variable speed responses and are available in different s...
High Speed Comparators
Our high-speed comparators offer fast propagation delay and fast rise and fall times, and suppor...
Low Power Comparators
This group of comparators includes products with low quiescent current and very small packages l...

Technical Documentation

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Technical Documents

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Featured Products

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MAX49140 30ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparator
The MAX49140 is a single high-speed comparator optimized for systems powered from a 3V or 5V sup...
  • Fast, 30ns Propagation Delay (10mV Overdrive)
  • Low-Power 100μA Supply Current (VDD = 3V)
  • Optimized for 3V and 5V Applications
  • Rail-to-Rail Input Voltage Range
  • Low, 500µV Offset Voltage
  • Internal Hysteresis for Clean Switching
  • Output Swing 300mV of Power Rails
  • CMOS/TTL-Compatible Outputs
  • Small SC70 Package
  • AEC-Q100 Qualified
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MAX40027 Dual 280ps High-Speed Comparator, Ultra-Low Dispersion with LVDS Outputs
The MAX40027 is a single-supply, dual high-speed comparator with a typical propagation delay of ...
  • Fast Propagation Delay: 280ps, Typ
  • Low Overdrive Dispersion: 25ps (VOD = 10mV to 1V)
  • Supply Voltage 2.7V to 3.6V
  • 45.9mW at 2.7V Supply (Each Comparator)
  • Power-Efficient LVDS Outputs
  • -40°C to +125°C Temperature Range
  • Automotive AEC-Q100 Qualified 
  • Small, 3mm x 2mm TDFN Package with Side-Wettable Flanks
MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP
The MAX9644/MAX9645/MAX9646 are small, single comparators, ideal for a wide variety of portable ...
  • Tiny, 1mm x 1mm x 0.6mm 4-Bump UCSP
    • Footprint = Two 0402 Resistors
    • Also Available in a 5-Pin SOT23 Package
  • Ultra-Low Operating Current (700nA max)
  • -0.3V to +5.5V Input Voltage Range
  • Internal 0.2V Reference Trimmed to 1% Accuracy
  • 15µs Propagation Delay
  • -40°C to +85°C Extended Temperature Range
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MAX9065 Ultra-Small, nanoPower, Window Comparator in 4 UCSP and 5 SOT23
The MAX9065 is an ultra-small, low-power, window comparator ideal for a wide variety of portable...
  • Tiny 1mm x 1mm 4-Bump UCSP
    • Footprint = Two 0402 Resistors
    • Also Available in 5-Pin SOT23 Package
  • Ultra-Low Power Operating Current
    • 1µA (max)
  • -0.3V to +5.5V Input Voltage Range
  • 1.0V to 5.5V VCC Range
  • 3.0V and 4.2V Trigger Points
  • -40°C to +85°C Extended Temperature Range
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MAX44269 1.3mm x 1.3mm, Low-Power Dual Comparator
The MAX44269 is an ultra-small and low-power dual comparator ideal for battery-powered applicati...
  • Ultra-Low Power Consumption
    • 0.5µA per Comparator
  • Ultra-Small 1.3mm x 1.3mm WLP Package
  • Guaranteed Operation Down to VCC = 1.8V
  • Input Common-Mode Voltage Range Extends 200mV Beyond-the-Rails
  • 6V Tolerant Inputs Independent of Supply
  • Open-Drain Outputs
  • Internal Filters Enhance RF Immunity
  • Crowbar-Current-Free Switching
  • Internal Hysteresis for Clean Switching
  • No Output Phase Reversal for Overdriven Inputs
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MAX44268 1.3mm x 1.3mm, Low-Power Dual Comparator with Reference
The MAX44268 is an ultra-small and low-power dual comparator ideal for battery-powered applicati...
  • Ultra-Low Power Consumption
    • 0.7µA per Comparator
  • Ultra-Small 1.3mm × 1.3mm WLP Package
  • Internal 1.236V ±1% Reference
  • Guaranteed Operation Down to VCC = 1.8V
  • Input Common-Mode Voltage Range Extends 200mV Beyond-the-Rails
  • 6V Tolerant Inputs Independent of Supply
  • Open-Drain Outputs
  • Internal Filters Enhance RF Immunity
  • Crowbar-Current-Free Switching
  • Internal Hysteresis for Clean Switching
  • No Output Phase Reversal for Overdriven Inputs

Reference Designs

MAXREFDES1255: 4-Switch Buck-Boost Converter
MAXREFDES1255 is a 4-switch buck boost converter used to generate a positive step-up/stepdown ou...
MAXREFDES1252: Miniature, 14.5V/1.2A, No-Opto Flyback DC-DC Converter with 91.7% Efficiency Using MAX17690
The MAXREFDES1238 is a single-input, 6 output, scalable power solution. It meets the Xilinx Vers...
MAXREFDES1249: Miniature Universal Input 36W AC-DC Flyback Converter using the MAX17595
The MAXREFDES1249 is a Universal Input (86 to 305VAC) Offline isolated power supply, delivers 36...
MAXREFDES1261: Asset Tracker Power Management Platform
The MAXREFDES01261 is a reference design of power management platform for asset tracker.
MAXREFDES1244: Miniature, 5V/1.2A, No-Opto Flyback DC-DC Converter with 88% Efficiency Using MAX17690
The MAXREFDES1244 illustrates technique using the No Opto Flyback converter to generate isolated...
MAXREFDES1251: Single Output Flyback Converter Using MAX17596
MAXREFDES1251 is based on MAX17596 flyback converter. The MAX17596 is a peak-current-mode contro...
MAXREFDES179# Reference Design Board
The MAXREFDES179 reference design is a complete Universal Serial Bus (USB) type-C PD solution fe...
MAXREFDES104#: Health Sensor Platform 3.0
HSP3 is a unique evaluation and development platform in a wearable form factor that demos the fu...
MAXREFDES1269: 5V/20A, Synchronous Step-Down Converter Using the MAX20098
The MAXREFDES1269 demonstrates how to build a DC-DC buck converter using the MAX20098 step-down ...
MAXREFDES220#: Finger Heart Rate and Pulse Oximeter Smart Sensor with Digital Signal Processing
Integrated solution for heart rate, pulse oximetry, blood oxygen saturation, and blood pressure ...
MAXREFDES177# IO-Link Universal Analog IO
The MAXREFDES177# IO-Link®-compliant, universal analog IO reference design uses the MAX22515 IO-...
MAXREFDES1256: 49W DC-DC Flyback Converter Using MAX17597
The MAXREFDES1256 is an isolated power supply capable of delivering 7V at up to 7A load current.
MAXREFDES1233: 1.8V/10A Core Power Supply for CPUs, Microcontrollers, FPGAs, or DDR2 Interfaces Using the MAX20710
The MAXREFDES1233 provides the internal core voltage (VCCINT) for CPUs, microcontrollers, FPGAs,...
MAXREFDES1238: Scalable, Single Input, 6 Output, Power Solution for the Versal ACAP Platform
In this design a single 12V input supplies a circuit which outputs 6 separate rails ranging from...
MAXREFDES103#: Wrist-Based SpO2, HR, and HRV Health Sensor Platform
The MAXREFDES103# is a full wrist-worn wearable reference design for heart-rate, heart-rate vari...