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/content/maximintegrated/en/products/analog/comparators 
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.
Technical Documentation
Featured Products
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
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 (VODÂ = 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 QualifiedÂ
- 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
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
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
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
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
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 (VODÂ = 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 QualifiedÂ
- 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
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
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
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
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
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...
MAXREFDES1104: Miniature, 5V/2A, Synchronous, No-Opto Flyback DC-DC Converter with 90% Efficiency Using MAX17690 and MAX17606
Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-med...
MAXREFDES96#: Single-Battery Charger and Fuel Gauge with Boost for Arduino Platforms
The MAXREFDES96# is an Arduino Uno R3-compatible board that provides battery charge, boost, and ...
MAXREFDES1037: 72W Offline Flyback Converter
The MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulato...
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
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...
MAXREFDES1104: Miniature, 5V/2A, Synchronous, No-Opto Flyback DC-DC Converter with 90% Efficiency Using MAX17690 and MAX17606
Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-med...
MAXREFDES96#: Single-Battery Charger and Fuel Gauge with Boost for Arduino Platforms
The MAXREFDES96# is an Arduino Uno R3-compatible board that provides battery charge, boost, and ...
MAXREFDES1037: 72W Offline Flyback Converter
The MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulato...
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