MAX998:Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators

The MAX976/MAX978/MAX998 dual/quad/single, high-speed, low-power comparators are optimized for +3V/+5V single-supply applications. They achieve a 20ns propagation delay while consuming only 225µA supply current per comparator. The MAX998 features a low-power shutdown mode that places the output in a high-impedance state and reduces supply current to 1nA. The MAX976/MAX978/MAX998 inputs have a common-mode voltage range that extends 200mV below ground. Their outputs are capable of rail-to-rail operation without external pullup circuitry, making these devices ideal for interface with CMOS/TTL logic. All inputs and outputs can tolerate a continuous short-circuit fault condition to either rail. The comparators' internal hysteresis ensures clean output switching, even with slow-moving input signals. For space-critical applications, the single MAX998 is available in a 6-pin SOT23 package, the dual MAX976 is available in an 8-pin µMAX® package, and the quad MAX978 is available in a 16-pin QSOP package.

Key Features
  • Single-Supply Operation Down to 2.7V
  • 20ns Propagation Delay
  • 225µA Supply Current
  • 1nA Shutdown Supply Current
  • Rail-to-Rail Outputs
  • Ground-Sensing Inputs
  • Internal Hysteresis Ensures Clean Switching
  • Available in Space-Saving Packages
    • SOT23 (MAX998)
    • µMAX (MAX976)
    • QSOP (MAX978)
MAX976, MAX978, MAX998: Typical Operating Circuit
MAX976, MAX978, MAX998: Typical Operating Circuit
Applications/Uses
  • 3V Systems
  • Battery-Powered Applications
  • Digital-Line Receivers
  • IR Receivers
  • Threshold Detectors/Discriminators
DataSheet
titleDownload file
MAX976-MAX998 Data SheetMAX976-MAX998.pdf
Parametrics
Part NumberComp-
arators
tPD
(ns)
Input RangeVSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Comp.
(µA)
VOS
(mV)
VOS
(mV)
Logic OutOper. Temp.
(°C)
Package/PinsBudgetary
Price
typminmaxmaxtypmaxSee Notes
MAX976220to Neg. Rail2.75.56500.22Push-Pull-40 to +85µMAX/8
SOIC(N)/8
$2.97 @1k
MAX9784QSOP/16
SOIC(N)/16
$3.32 @1k
MAX9981SOIC(N)/8
SOT/6
$2.12 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX998ESANo Longer AvailableMAX998ESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX998ESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX998ESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX998ESA-TNo Longer AvailableMAX998ESA+TSOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX998EUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX998EUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX998EUT-TNo Longer AvailableMAX998EUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
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