Quad, Low-Power, General Purpose Differential Comparator - LP339


Quad, Low-Power, General Purpose Differential Comparator


The LP239, LP339, LP2901 are low-power quadruple differential comparators. Each device consists of four independent voltage comparators designed specifically to operate from a single power supply and typically to draw 60-µA drain current over a wide range of voltages. Operation from split power supplies is also possible and the ultralow power supply drain current is independent of the power supply voltage.

Applications include limit comparators, simple analog-to-digital converters, pulse generators, squarewave generators, time delay generators, voltage controlled oscillators, multivibrators, and high-voltage logic gates. The LP239, LP339, LP2901 were specifically designed to interface with the CMOS logic family. The ultra-low power-supply current makes these products desirable in battery-powered applications.

The LP239 is characterized for operation from –25°C to 85°C. The LP339 is characterized for operation from 0°C to 70°C. The LP2901 is characterized for operation from –40°C to 85°C.


  • Wide Supply-Voltage Range . . . 3V to 30 V
  • Ultralow Power Supply Current Drain . . . 60 µA Typ
  • Low Input Biasing Current . . . 3 nA
  • Low Input Offset Current . . . ±0.5 nA
  • Low Input Offset Voltage . . . ±2 mV
  • Common-Mode Input Voltage Includes Ground
  • Output Voltage Compatible With MOS and CMOS Logic
  • High Output Sink-Current Capability
    (30 mA at VO = 2V)
  • Power Supply Input Reverse-Voltage Protected
  • Single-Power-Supply Operation
  • Pin-for-Pin Compatible With LM239, LM339, LM2901

The LP239 is obsolete and is no longer supplied.

View more

Parametrics Compare all products in Comparator

Vs (Min) (V)
Vs (Max) (V)
tRESP Low - to - High (us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Iq per channel (Max) (mA)
Output Type
Input Bias Current (+/-) (Max) (nA)
Number of Channels (#)
VICR (Max) (V)
VICR (Min) (V)
Operating Temperature Range (C)
Approx. Price (US$)
LP339 LP2901 LP2901-Q1
5     3     3    
30     30     30    
1.3     8     8    
5     5     5    
0.025     0.25     0.25    
Open Collector
Open Drain    
Open Collector
Open Drain    
Open Collector
Open Drain    
25     25     25    
4     4     4    
Out     Out     Out    
3.5     28.5     28.5    
0     0     0    
Catalog     Catalog     Automotive    
0 to 70     -40 to 85     -40 to 85    
0.27 | 1ku     0.30 | 1ku     0.39 | 1ku    

Featured tools and software

Click Here