LM139 Low Power Low Offset Voltage Quad Comparator – Datasheet

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LM139 series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mV max for all four comparators. The IC has a wide range of working conditions a wide range of working voltages and possesses direct interfacing capability with almost every PMOS, CMOS, and NMOS device. Moreover, the IC offers a wide array of features such as high noise immunity, ESD barring/reduction, and exceptionally low power dissipation.

Voltage Comparator

A voltage comparator is a simple electronic configuration, that compares two voltages at two different levels, and then switches the output to wither LOW or HIGH state with respect to a voltage that is at a higher level then the other. In other words, a voltage comparator compares the magnitude of two voltage inputs and determines which is the largest of the two. There are two main types of voltage comparators:

  1. Non inverting Comparators
  2. Inverting Comparators

LM139 Pinout

LM139 Pin Configuration

Pin NoPin NameDescription
1OUTPUT 2Output Of Comparator 2
2OUTPUT 1Output Of Comparator 1
3V+Positive Supply
4INV-INPUT 1Inverting Input Of Comparator 1
5NON-INV-INPUT 1Non Inverting Input Of Comparator 1
6INV-INPUT 2Inverting Input Of Comparator 2
7NON-INV-INPUT 2Non Inverting Input Of Comparator 2
8INV-INPUT 3Inverting Input Of Comparator 3
9NON-INV-INPUT 3Non Inverting Input Of Comparator 3
10INV-INPUT 4Inverting Input Of Comparator 4
11NON-INV-INPUT 4Non Inverting Input Of Comparator 4
12GNDGround Pin
13OUTPUT 4Output Of Comparator 4
14OUTPUT 3Output Of Comparator 3

Order Codes

Part NoTemp: Range
LM139/LM139A −55˚C to +125˚C
LM239/LM239A−25˚C to +85˚C
LM339/LM339A0˚C to +70˚C

LM139 Features

  • Wide supply voltage range
  • LM139/139A Series 2 to 36 VDC or ±1 to ±18 VDC
  • Very low supply current drain (0.8 mA) — independent of supply voltage
  • Low input biasing current: 25 nA
  • Low input offset current: ±5 nA
  • Offset voltage: ±3 mV
  • Input common-mode voltage range includes GND
  • Differential input voltage range equal to the power supply voltage
  • Low output saturation voltage: 250 mV at 4 mA

Application

  • Limit comparators
  • Simple analog to digital converters
  • Pulse
  • Square wave
  • Time delay generators
  • Wide range VCO
  • MOS clock timers
  • Multivibrators
  • High voltage digital logic gates

LM139 Datasheet

You can download this datasheet for LM139 Low Power Quad Voltage Comparator from the link given below:

See Also: CD4584 Hex Schmitt Trigger – Datasheet | CD4536 Programmable Timer – Datasheet | CD4075 Triple 3-Input OR Gate – Datasheet