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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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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

MAXREFDES1263: True Wireless Stereo Cradle and Earbuds

This solution demonstrates a small size, low power, high effective, high accuracy power manageme...

MAXREFDES1165: 32-Channel Industrial Digital I/O Module

The MAXREFDES1165 is a complete, 32-channel industrial digital I/O module comprising 16 digital ...

MAXREFDES150#: Pocket IO PLC Development Platform

Pocket IO™ integrates 30 IO's consisting of Analog I/Os, Digital I/Os, RS485, Encoder / Motor Co...

MAXREFDES145#: 8-Channel IO-Link Master

The MAXREFDES145# is an IO-Link®-compliant, 8-port IO-Link master reference design that uses TEC...
MAXREFDES179# Reference Design Board

MAXREFDES179# Reference Design Board

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

MAXREFDES9002: C-source Reference for Operating the DS28E18 from Cortex-M4 GPIO Pins

Extend an I2C and SPI interface using the DS28E18 with included M4 compatible 1-Wire API and C-d...

MAXREFDES1258: 1200W DC-DC Buck Converter Using the MAX15157B

The MAXREFDES1258 is a 1200W, 12V 4-phase DC-DC buck converter that can deliver up to 100A load ...

MAXREFDES1275: 1A,3-Channel LED Driver in Buck Configuration using MAX20050 and its dimming control using MAX32630FTHR

The MAX20050 is a high-brightness LED driver for automotive exterior lighting applications.

Remote Monitoring System Sends Email via SMS

Remote monitoring of temperature and an analogue signal via E-mails. On meeting certain alarm co...

MAXREFDES1089: Miniature, 12V/250mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.7% Efficiency

Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-med...

MAXREFDES1091: Miniature, 12V/250mA, No-Opto Flyback DC-DC Converter with 91% Efficiency Using MAX17690 Reference Design

Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-med...

MAXREFDES1171: Low-Power Fault Indicators

The MAXREFDES1171 uses Maxim® low-power chips for power grid fault indicators based on the low-p...

MAXREFDES1168: 7V/200mA or 5V/100mA, Iso-Buck DC-DC Converter Using the MAX17681A

The MAX17681/MAX17681A is a high-voltage, highefficiency, iso-buck DC-DC converter designed to p...

MAXREFDES1099: Miniature, 24V/500mA, No-Opto Flyback DC-DC Converter with 93% Efficiency Using the MAX17690

Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-med...

MAXREFDES1141: 2.4W DC-DC Flyback Converter Using the MAX17596

The MAX17596 is a peak-current-mode controller for designing wide input-voltage flyback regulato...