Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
eDesignSuite
Get Started
Partner products
Sales Briefcase
  • This family of devices consists of four independent precision-voltage comparators with an offset voltage specification as low as 2 mV maximum for LM339A, LM239A, and LM139A. Each comparator has been designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible.

    These comparators also have a unique characteristic in that the input common mode voltage range includes ground even though operated from a single power supply voltage.

    Key Features

    • Wide single supply voltage range or dual supplies for all devices: +2 to +36 V or ±1 V to ±18 V
    • Very low supply current (1.1 mA) independent of supply voltage
    • Low input bias current: 25 nA typ
    • Low input offset current: ±5 nA typ
    • Low input offset voltage: ±1 mV typ
    • Input common-mode voltage range includes ground
    • Low output saturation voltage: 250 mV typ;(ISINK = 4 mA)
    • Differential input voltage range equal to the supply voltage
    • TTL, DTL, ECL, MOS, CMOS compatible outputs

Recommended for you

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      ST-OPAMPS-APP

      Active

      Operational amplifier and comparator application for smartphones and tablets

      Simulators ST
      ST-OPAMPS-APP

      Description:

      Operational amplifier and comparator application for smartphones and tablets

CAD/EDA Symbols, Footprints and Models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LM239ADT
Active
SO-14 Industrial Ecopack3
LM239APT
Active
TSSOP-14 Industrial Ecopack3
LM239D
Active
SO-14 Industrial Ecopack3
LM239DT
Active
SO-14 Industrial Ecopack3
LM239PT
Active
TSSOP-14 Industrial Ecopack3
LM239QT
Active
VFQFPN 16 3x3x0.9 Industrial Ecopack3

LM239ADT

Package:

SO-14

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-14

Grade

Industrial

RoHS Compliance Grade

Ecopack3

LM239APT

Package:

TSSOP-14

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP-14

Grade

Industrial

RoHS Compliance Grade

Ecopack3

LM239D

Package:

SO-14

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-14

Grade

Industrial

RoHS Compliance Grade

Ecopack3

LM239DT

Package:

SO-14

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-14

Grade

Industrial

RoHS Compliance Grade

Ecopack3

LM239PT

Package:

TSSOP-14

Material Declaration**:

Marketing Status

Active

Package

TSSOP-14

Grade

Industrial

RoHS Compliance Grade

Ecopack3

LM239QT

Package:

VFQFPN 16 3x3x0.9

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 16 3x3x0.9

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
LM239APT Available at 8 distributors

Distributor availability ofLM239APT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2371 1 Order Now
YOSUN ASIA/PACIFIC 2500 1 Order Now
RS COMPONENTS EUROPE 5000 1 Order Now
AVNET AMERICA 25000 0 Order Now
ARROW EUROPE 15000 0 Order Now
ARROW AMERICA 20000 2500 Order Now
MOUSER WORLDWIDE 2280 1 Order Now
Farnell Element14 EUROPE 4475 1 Order Now

Distributor reported inventory date: 2020-09-26

Distributor Name

DIGIKEY

Stock

2371

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2500

Min.Order

1

Region

ASIA/PACIFIC Order Now

RS COMPONENTS

Stock

5000

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

25000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

15000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

20000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

2280

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4475

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-26

Buy now
Active
EAR99 NEC Tape And Reel TSSOP-14 -40 105 MOROCCO 0.199 / 1k
LM239D Available at 5 distributors

Distributor availability ofLM239D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6567 1 Order Now
RS COMPONENTS EUROPE 850 1 Order Now
ARROW EUROPE 2330 0 Order Now
MOUSER WORLDWIDE 6231 1 Order Now
RUTRONIK EUROPE 1050 50 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

6567

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

850

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2330

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

6231

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

1050

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

Buy now
Active
EAR99 NEC Tube SO-14 -40 105 MOROCCO 0.13 / 1k
LM239DT Available at 8 distributors

Distributor availability ofLM239DT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 29198 1 Order Now
COMPEL EUROPE 6230 1 Order Now
RS COMPONENTS EUROPE 8600 1 Order Now
AVNET AMERICA 7500 0 Order Now
ARROW EUROPE 30000 0 Order Now
ARROW AMERICA 10000 2500 Order Now
MOUSER WORLDWIDE 30938 1 Order Now
Farnell Element14 EUROPE 147500 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

29198

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

6230

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

8600

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

7500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

30000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

10000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

30938

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

147500

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

Buy now
Active
EAR99 NEC Tape And Reel SO-14 -40 105 MOROCCO 0.109 / 1k
LM239ADT Available at 8 distributors

Distributor availability ofLM239ADT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 903 1 Order Now
RS COMPONENTS EUROPE 600 1 Order Now
AVNET AMERICA 12500 0 Order Now
FUTURE WORLDWIDE 8141 1 Order Now
ARROW EUROPE 32500 0 Order Now
ARROW AMERICA 17500 2500 Order Now
MOUSER WORLDWIDE 6983 1 Order Now
Farnell Element14 EUROPE 2164 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

903

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

600

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

12500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

8141

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

32500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

17500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

6983

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2164

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

Buy now
Active
EAR99 NEC Tape And Reel SO-14 -40 105 MOROCCO 0.16 / 1k
LM239PT Available at 8 distributors

Distributor availability ofLM239PT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8325 1 Order Now
AVNET AMERICA 67500 0 Order Now
ARROW EUROPE 75000 0 Order Now
ARROW AMERICA 17000 1 Order Now
MOUSER WORLDWIDE 4043 1 Order Now
Farnell Element14 EUROPE 620 1 Order Now
ANGLIA Live EUROPE 55600 10 Order Now
RUTRONIK EUROPE 5000 2500 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

8325

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

67500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

75000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

17000

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

4043

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

620

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

55600

Min.Order

10

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

Buy now
Active
EAR99 NEC Tape And Reel TSSOP-14 -40 105 PHILIPPINES 0.116 / 1k
LM239QT Available at 4 distributors

Distributor availability ofLM239QT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1633 1 Order Now
AVNET AMERICA 3000 0 Order Now
MOUSER WORLDWIDE 4524 1 Order Now
Farnell Element14 EUROPE 3000 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

1633

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

4524

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

Buy now
Active
EAR99 NEC Tape And Reel VFQFPN 16 3x3x0.9 -40 105 MALAYSIA 0.116 / 1k

LM239APT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.199 / 1k

Distributor availability ofLM239APT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2371 1 Order Now
YOSUN ASIA/PACIFIC 2500 1 Order Now
RS COMPONENTS EUROPE 5000 1 Order Now
AVNET AMERICA 25000 0 Order Now
ARROW EUROPE 15000 0 Order Now
ARROW AMERICA 20000 2500 Order Now
MOUSER WORLDWIDE 2280 1 Order Now
Farnell Element14 EUROPE 4475 1 Order Now

Distributor reported inventory date: 2020-09-26

Distributor Name

DIGIKEY

Stock

2371

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2500

Min.Order

1

Region

ASIA/PACIFIC Order Now

RS COMPONENTS

Stock

5000

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

25000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

15000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

20000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

2280

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4475

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TSSOP-14

Operating Temperature (°C)

(min)

-40

(max)

105

Budgetary Price (US$)* / Qty

0.199 / 1k

Country of Origin

MOROCCO

LM239D

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.13 / 1k

Distributor availability ofLM239D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6567 1 Order Now
RS COMPONENTS EUROPE 850 1 Order Now
ARROW EUROPE 2330 0 Order Now
MOUSER WORLDWIDE 6231 1 Order Now
RUTRONIK EUROPE 1050 50 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

6567

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

850

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2330

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

6231

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

1050

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

ECCN (EU)

NEC

Packing Type

Tube

Package

SO-14

Operating Temperature (°C)

(min)

-40

(max)

105

Budgetary Price (US$)* / Qty

0.13 / 1k

Country of Origin

MOROCCO

LM239DT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.109 / 1k

Distributor availability ofLM239DT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 29198 1 Order Now
COMPEL EUROPE 6230 1 Order Now
RS COMPONENTS EUROPE 8600 1 Order Now
AVNET AMERICA 7500 0 Order Now
ARROW EUROPE 30000 0 Order Now
ARROW AMERICA 10000 2500 Order Now
MOUSER WORLDWIDE 30938 1 Order Now
Farnell Element14 EUROPE 147500 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

29198

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

6230

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

8600

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

7500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

30000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

10000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

30938

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

147500

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-14

Operating Temperature (°C)

(min)

-40

(max)

105

Budgetary Price (US$)* / Qty

0.109 / 1k

Country of Origin

MOROCCO

LM239ADT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.16 / 1k

Distributor availability ofLM239ADT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 903 1 Order Now
RS COMPONENTS EUROPE 600 1 Order Now
AVNET AMERICA 12500 0 Order Now
FUTURE WORLDWIDE 8141 1 Order Now
ARROW EUROPE 32500 0 Order Now
ARROW AMERICA 17500 2500 Order Now
MOUSER WORLDWIDE 6983 1 Order Now
Farnell Element14 EUROPE 2164 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

903

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

600

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

12500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

8141

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

32500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

17500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

6983

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2164

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-14

Operating Temperature (°C)

(min)

-40

(max)

105

Budgetary Price (US$)* / Qty

0.16 / 1k

Country of Origin

MOROCCO

LM239PT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.116 / 1k

Distributor availability ofLM239PT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8325 1 Order Now
AVNET AMERICA 67500 0 Order Now
ARROW EUROPE 75000 0 Order Now
ARROW AMERICA 17000 1 Order Now
MOUSER WORLDWIDE 4043 1 Order Now
Farnell Element14 EUROPE 620 1 Order Now
ANGLIA Live EUROPE 55600 10 Order Now
RUTRONIK EUROPE 5000 2500 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

8325

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

67500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

75000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

17000

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

4043

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

620

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

55600

Min.Order

10

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TSSOP-14

Operating Temperature (°C)

(min)

-40

(max)

105

Budgetary Price (US$)* / Qty

0.116 / 1k

Country of Origin

PHILIPPINES

LM239QT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.116 / 1k

Distributor availability ofLM239QT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1633 1 Order Now
AVNET AMERICA 3000 0 Order Now
MOUSER WORLDWIDE 4524 1 Order Now
Farnell Element14 EUROPE 3000 1 Order Now

Distributor reported inventory date: 2020-09-25

Distributor Name

DIGIKEY

Stock

1633

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

4524

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFQFPN 16 3x3x0.9

Operating Temperature (°C)

(min)

-40

(max)

105

Budgetary Price (US$)* / Qty

0.116 / 1k

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors