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LM339 VOLTAGE COMPARATOR IC

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Tonomech offers LM339 VOLTAGE COMPARATOR IC.

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In stock

LM339 is a voltage comparator IC from LMx39x series and is manufactured by many industries. The devices consist of four independent voltage comparators that are designed to operate from a single power supply. Also operation from dual supplies is possible, as long as the difference between the two supplies is 2 V to 36 V.

 

LM339 Pin Configuration

LM339 is a 14 pin device as shown in above pin diagram. Here we will name the pinout of all four comparators on the chip and describe function of each pin.

Pin Name  Description
1 1OUT Output pin of the comparator 1
2 2OUT Output pin of the comparator 2
3 VCC Power supply
4 2IN- Negative input pin of the comparator 2
5 2IN+ Positive input pin of the comparator 2
6 1IN- Negative input pin of the comparator 1
7 1IN+ Positive input pin of the comparator 1
8 3IN- Negative input pin of the comparator 3
9 3IN+ Positive input pin of the comparator 3
10 4IN- Negative input pin of the comparator 4
11 4IN+ Positive input pin of the comparator 4
12 GND Ground
13 4OUT Output pin of the comparator 4
14 3OUT Output pin of the comparator 3

 

The device is available in many packages; a designer can choose one depending on their requirement.

 

Features and Electrical Characteristics of LM339

  • Four individually operated voltage comparators
  • Low noise interference among comparators
  • Single Supply Operation: +3.0 V to +36 V
  • Dual  Supply Operation: +18V and -18V
  • Low Input Bias Current: 25 nA
  • Low Input Offset Current: ±5.0 nA
  • Low Input Offset Voltage
  • Input Common Mode Voltage Range to GND
  • Low Output Saturation Voltage: 130 mV @ 4.0 mA
  • TTL and CMOS compatible
  • ESD Clamps on the inputs increase reliability without affecting device operation
  • Pb−Free, Halogen Free/BFR Free and RoHS compliant

Applications

  • Oscillators
  • Voltage comparators
  • Peak detectors
  • Logic voltage translation
  • Power supervision
  • Industrial
  • Measuring instruments
  • Automotive
  • Operating voltage range: +4.75 to +5.25V
  • Recommended operating voltage: +5V
  • Maximum supply voltage:7V
  • Maximum current allowed to draw through each gate output: 8mA
  • TTL outputs
  • Low power consumption
  • Typical Rise Time: 18ns
  • Typical Fall Time: 18ns
  • Operating temperature:0°C  to 70°C
  • Storage Temperature: -65°C  to 150°C

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