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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 Documentation

Technical Documents

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Featured Products

MAX49140 30ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparator

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
MAX40027 Dual 280ps High-Speed Comparator, Ultra-Low Dispersion with LVDS Outputs

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
MAX9065 Ultra-Small, nanoPower, Window Comparator in 4 UCSP and 5 SOT23

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
MAX44269 1.3mm x 1.3mm, Low-Power Dual Comparator

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
MAX44268 1.3mm x 1.3mm, Low-Power Dual Comparator with Reference

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

MAXREFDES179# Reference Design Board

MAXREFDES179# Reference Design Board

The MAXREFDES179 reference design is a complete Universal Serial Bus (USB) type-C PD solution fe...

MAXREFDES145#: 8-Channel IO-Link Master

The MAXREFDES145# is an IO-Link®-compliant, 8-port IO-Link master reference design that uses TEC...

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...

MAXREFDES1120: 3.3V/4A Synchronous Step-Down DC-DC Converter Using MAX15038

The MAXREFDES1120 is a synchronous step-down DC-DC converter using the MAX15038. The converter d...

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...

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...

MAXREFDES1261: Asset Tracker Power Management Platform

The MAXREFDES01261 is a reference design of power management platform for asset tracker.

MAXREFDES_LIDAR1#: Quad-Channel LiDAR Receiver Front-End Reference Design, MAX40662, MAX40026

This is a front end LiDAR reference design featuring a 4-channel APD, 4-channel high bandwidth T...

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 ...

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,...

MAXREFDES1265: Simple Keypad Interface Using the MAX32625PICO and MAX7360

The MAXREFDES1265 is a reference design showcasing the MAX7360 and MAX32625PICO that demonstrate...

MAXREFDES177# IO-Link Universal Analog IO

The MAXREFDES177# IO-Link®-compliant, universal analog IO reference design uses the MAX22515 IO-...