Ultra Low Power, Excellent EMI Immunity, Rail-to-Rail Input, CMOS Comparator

Data Sheet



This product is under development, and specifications are subject to change without notice.


  • Ultra Low Power (
    -NJU77210/NJU77220(Single) 0.7µA
    -NJU77212/NJU77222(Dual) 0.6µA/ch)
  • Integrated EMI Filter (EMIRR = 100dB (f = 1.8GHz))
  • Rail-to-Rail Input
    - Common-Mode Input Voltage Range (V to V+)
  • Dynamic Transient Stabilizer TM
    - Rail-to-Rail Input with no propagation delay fluctuation
  • 5.5V Input Tolerant
  • Output Drive Current (
    - Sink (Vo = 1V) 20mA
    - Source (Vo = 2V, NJU7721x) 20mA)
  • Push-Pull Output (NJU7721x)
  • Open-Drain Output (NJU7722x)
  • Supply Voltage (1.7V to 5.5V)
  • Propagation Delay (9.8μs)
  • Lead-less Small Package (
    DFN6-G1 (ESON6-G1) (1.6 x 1.6 mm)
    DFN8-U1 (ESON8-U1) (2.0 x 2.0 mm))
  • Standard Small Package (
    SOT-23-5, SC-88A
    MSOP8 (VSP8))

General Description

The NJU7721x / NJU7722x series are Rail-to-Rail input comparator featuring ultralow supply current of 0.6µA per channel (single channel is 0.7µA). Designed to operate from 1.7V to 5.5V, and rail-to-rail input voltage range, make them suitable for use in a wide variety of battery-powered single supply applications. The NJU7721x, NJU7722x series features the newly developed circuit technology Dynamic Transient Stabilizer TM realizes rail-to-rail input with suppressed fluctuation of propagation delay time. Integrated high EMI immunity can reduced malfunctions caused by RF-noises from mobile phones and other electronic devices. Also, the input voltage can be input up to 5.5V beyond the positive supply rail, and no output inversion even in this state. These make them well suited for precision voltage monitoring in harsh, noisy environments. NJU7721x / NJU7722x series are available in ultra-small, leadless package measuring 1.6 mm x 1.6 mm (DFN6) and 2.0 mm x 2.0 mm (DFN8), and industrial standard leaded packages SOT-23-5, SC-88A, and MSOP8 (VSP8).

* Dynamic Transient Stabilizer ™

It is a circuit technology that suppresses fluctuations in propagation delay time even if the reference voltage for voltage detection fluctuates.


  • Portable and battery-powered devices
  • Alarm and Monitoring Circuits
  • Gas / Smoke Detector
  • Servo drive position sensor
  • Window comparators
  • Voltage Level Translators

Design Simulation Models

Package Information

Part NumberPackage OutlinePLPPinsMaterial Declaration (RoHS/Halogen)Terminal FinishWeight(mg) (Reference)Reflow solderingFlow solderingIron solderingPacking ConditionMSLSolder Foot Print
NJU77222RMSOP8(VSP8)-8-Sn2Bi21YesYesYesNon dry pack1
NJU77222KU1DFN8-U1(ESON8-U1)-8-Sn2Bi5.3Yes--Non dry pack1

Sample & Buy

Part NumberPackagesStatusPacking SpecificationSampleBuy
NJU77222RMSOP8(VSP8)(U.D.)Contact UsSales Support
NJU77222KU1DFN8-U1(ESON8-U1)(U.D.)Contact UsSales Support

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