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

Fast Comparator with Most Compact Overall Solution for Automotive Applications

Product Details

The MAX49140 is a single high-speed comparator optimized for systems powered from a 3V or 5V supply. The MAX49140 combines high speed, low power, and rail-to-rail inputs. Propagation delay is 30ns, while supply current is only 100µA (typ).

The input common-mode range of the device extends up to both power-supply rails. The output pulls to within 0.3V of either supply rail without external pullup circuitry, making the device ideal for interfacing 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 MAX49140 is offered in tiny, 5-pin SC70 package and is fully specified over -40°C to +125°C automotive temperature range. The device is AEC-Q100 qualified.

Key Features

  • 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

Applications/Uses

  • 3V/5V Systems
  • Car Battery-Powered Systems
  • Line Receivers
  • Sampling Circuits
  • Threshold Detectors/Discriminators
  • Zero-Crossing Detectors
Parametric specs for Comparators
tPD (ns) (typ) 30
VOS (mV) (max) 5
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) 200
Logic Out Push-Pull
Oper. Temp. (°C) -40 to +125
Package/Pins SC70-CU/5
Budgetary
Price (See Notes)
$0.99 @1k
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Simplified Block Diagram

MAX49140: Simplified Block Diagram MAX49140: Simplified Block Diagram Zoom icon

Technical Docs

Design & Development

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Description

The MAX49140 evaluation kit (EV kit) is a fully assembled and tested circuit board that evaluates the MAX49140 30ns, rail-to-rail single supply comparator.

The MAX49140 EV kit comes with a MAX49140AXK/V+ installed that operates off a VDD supply between 2.7V and 5.5V. The MAX49140AXK/V+ is fully specified over -40°C to +125°C automotive temperature range and is AEC-Q100 qualified.

View Details

Features

  • 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
  • Proven PCB Layout
  • Fully Assembled and Tested

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Support & Training

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

Parameters

Parametric specs for Comparators
tPD (ns) (typ) 30
VOS (mV) (max) 5
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) 200
Logic Out Push-Pull
Oper. Temp. (°C) -40 to +125
Package/Pins SC70-CU/5
Budgetary
Price (See Notes)
$0.99 @1k

Key Features

  • 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

Applications/Uses

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

Description

The MAX49140 is a single high-speed comparator optimized for systems powered from a 3V or 5V supply. The MAX49140 combines high speed, low power, and rail-to-rail inputs. Propagation delay is 30ns, while supply current is only 100µA (typ).

The input common-mode range of the device extends up to both power-supply rails. The output pulls to within 0.3V of either supply rail without external pullup circuitry, making the device ideal for interfacing 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 MAX49140 is offered in tiny, 5-pin SC70 package and is fully specified over -40°C to +125°C automotive temperature range. The device is AEC-Q100 qualified.

Simplified Block Diagram

MAX49140: Simplified Block Diagram MAX49140: Simplified Block Diagram 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.