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40ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators

Product Details

The MAX9140/MAX9141 are single and the MAX9142/MAX9144 are dual/quad high-speed comparators optimized for systems powered from a 3V or 5V supply. The MAX9141 features latch enable and device shutdown. These devices combine high speed, low power, and rail-to-rail inputs. Propagation delay is 40ns, while supply current is only 150µA per comparator.

The input common-mode range of the devices extends beyond both power-supply rails. The outputs pull to within 0.3V of either supply rail without external pullup circuitry, making these devices ideal for interface with both CMOS and TTL logic. All input and output pins can tolerate a continuous short-circuit fault condition to either rail. Internal hysteresis ensures clean output switching, even with slow-moving input signals.

The devices are higher-speed, lower-power, and lower-cost upgrades to industry-standard comparators MAX941/MAX942/MAX944.

The MAX9140 are offered in tiny 5-pin SC70 and SOT23 packages. The MAX9141 and MAX9142 are available in 8-pin SOT23 and SO packages, while the MAX9144 is available in both 14-pin SO and TSSOP packages. 

Key Features

  • Fast, 40ns Propagation Delay (10mV Overdrive)
  • Low Power
    • 150µA Supply Current Per Comparator (3V)
  • Optimized for 3V and 5V Applications
  • Rail-to-Rail Input Voltage Range
  • Low, 500µV Offset Voltage
  • Internal Hysteresis for Clean Switching
  • Outputs Swing 300mV of Power Rails
  • CMOS/TTL-Compatible Outputs
  • Output Latch (MAX9141 Only)
  • Shutdown Function (MAX9141 Only)
  • Available in SC70 and SOT23 Packages
  • AEC-Q100 Qualified (MAX9140AAXK/V+T Only)

Applications/Uses

  • 3V/5V Systems
  • Battery-Powered Systems
  • Line Receivers
  • Sampling Circuits
  • Threshold Detectors/Discriminators
  • Zero-Crossing Detectors
Parametric specs for Comparators
tPD (ns) (typ) 40
VOS (mV) (max) 2
VSUPPLY (Total) (V) (min) 2.7
VSUPPLY (Total) (V) (max) 5.5
# Comparators 1
Input Range Rail to Rail
to Neg. Rail
ICC per Comp. (µA) (max) 320
Logic Out Push-Pull
Oper. Temp. (°C) -40 to +85
-40 to +125
Package/Pins SOIC (N)/8
SOT23/8
Budgetary
Price (See Notes)
$0.82 @1k
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Simplified Block Diagram

MAX9140, MAX9141, MAX9142, MAX9144: Pin Configurations MAX9140, MAX9141, MAX9142, MAX9144: Pin Configurations Zoom icon

Technical Docs

Design & Development

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Parameters

Parametric specs for Comparators
tPD (ns) (typ) 40
VOS (mV) (max) 2
VSUPPLY (Total) (V) (min) 2.7
VSUPPLY (Total) (V) (max) 5.5
# Comparators 1
Input Range Rail to Rail
to Neg. Rail
ICC per Comp. (µA) (max) 320
Logic Out Push-Pull
Oper. Temp. (°C) -40 to +85
-40 to +125
Package/Pins SOIC (N)/8
SOT23/8
Budgetary
Price (See Notes)
$0.82 @1k

Key Features

  • Fast, 40ns Propagation Delay (10mV Overdrive)
  • Low Power
    • 150µA Supply Current Per Comparator (3V)
  • Optimized for 3V and 5V Applications
  • Rail-to-Rail Input Voltage Range
  • Low, 500µV Offset Voltage
  • Internal Hysteresis for Clean Switching
  • Outputs Swing 300mV of Power Rails
  • CMOS/TTL-Compatible Outputs
  • Output Latch (MAX9141 Only)
  • Shutdown Function (MAX9141 Only)
  • Available in SC70 and SOT23 Packages
  • AEC-Q100 Qualified (MAX9140AAXK/V+T Only)

Applications/Uses

  • 3V/5V Systems
  • Battery-Powered Systems
  • Line Receivers
  • Sampling Circuits
  • Threshold Detectors/Discriminators
  • Zero-Crossing Detectors

Description

The MAX9140/MAX9141 are single and the MAX9142/MAX9144 are dual/quad high-speed comparators optimized for systems powered from a 3V or 5V supply. The MAX9141 features latch enable and device shutdown. These devices combine high speed, low power, and rail-to-rail inputs. Propagation delay is 40ns, while supply current is only 150µA per comparator.

The input common-mode range of the devices extends beyond both power-supply rails. The outputs pull to within 0.3V of either supply rail without external pullup circuitry, making these devices ideal for interface with both CMOS and TTL logic. All input and output pins can tolerate a continuous short-circuit fault condition to either rail. Internal hysteresis ensures clean output switching, even with slow-moving input signals.

The devices are higher-speed, lower-power, and lower-cost upgrades to industry-standard comparators MAX941/MAX942/MAX944.

The MAX9140 are offered in tiny 5-pin SC70 and SOT23 packages. The MAX9141 and MAX9142 are available in 8-pin SOT23 and SO packages, while the MAX9144 is available in both 14-pin SO and TSSOP packages. 

Simplified Block Diagram

MAX9140, MAX9141, MAX9142, MAX9144: Pin Configurations MAX9140, MAX9141, MAX9142, MAX9144: Pin Configurations Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal