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LM139J - Texas Instruments

Description: Quad Comparators

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Symbol
LM139J - Texas Instruments - PCB symbol
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PCB Footprints
LM139J - Texas Instruments PCB footprint - Ceramic Dual-In-Line Packages - Ceramic Dual-In-Line Packages - CDIP 14
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3D Models
LM139J - Texas Instruments - 3D model - Ceramic Dual-In-Line Packages - CDIP 14
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LM139J Details

  • Manufacturer Part Number:

    LM139J

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    14

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Amplifier Type:

    COMPARATOR

  • Average Bias Current-Max (IIB):

    0.3 µA

  • Bias Current-Max (IIB) @25C:

    0.025 µA

  • Input Offset Voltage-Max:

    5000 µV

  • JESD-30 Code:

    R-GDIP-T14

  • JESD-609 Code:

    e0

  • Length:

    19.94 mm

  • Number of Functions:

    4

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -55 °C

  • Output Type:

    OPEN-COLLECTOR; OPEN-DRAIN

  • Package Body Material:

    CERAMIC, GLASS-SEALED

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP14,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Packing Method:

    TUBE

  • Qualification Status:

    Not Qualified

  • Response Time-Nom:

    1300 ns

  • Screening Level:

    MIL-STD-883

  • Seated Height-Max:

    5.08 mm

  • Supply Current-Max:

    2 mA

  • Supply Voltage Limit-Max:

    36 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Temperature Grade:

    MILITARY

  • Terminal Finish:

    Tin/Lead (Sn/Pb)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

LM139J Frequently Asked Questions (FAQs)

  • The maximum voltage that can be applied to the input pins is the supply voltage (Vcc) + 0.3V. Exceeding this voltage can cause damage to the device.
  • To prevent oscillation, ensure that the input signals are properly filtered and decoupled, and that the output is properly loaded. Additionally, consider adding hysteresis to the comparator by connecting a resistor and capacitor between the output and the non-inverting input.
  • The minimum input voltage required for the comparator to function correctly is typically around 1.5V to 2V below the supply voltage (Vcc). Operating the comparator below this voltage may result in incorrect output states.
  • No, the LM139J is a comparator, not an amplifier. It is designed to compare two input voltages and output a digital signal indicating which input is higher. It is not suitable for amplifying small signals.
  • The pull-up resistor value depends on the load current required and the output voltage swing. A general rule of thumb is to choose a resistor value that limits the output current to 1-2mA. A higher value resistor may be required for higher output voltage swings.

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LM139J Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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LM139J Alternates

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Image Part Number Model
Part Image LM139JB Texas Instruments

Comparator, 4 Func, 5000uV Offset-Max, 1300ns Response Time, BIPolar, CDIP14
Part Image CA0139E Rochester Electronics LLC

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Part Image LM139N Texas Instruments

Comparator, 4 Func, 9000uV Offset-Max, 1300ns Response Time, BIPolar, PDIP14
Part Image 7700801CA Fairchild Semiconductor Corporation

Comparator, 1 Func, 5000uV Offset-Max, BIPolar, CDIP14
Part Image PM139Y Rochester Electronics LLC

Comparator, 4 Func, 9000uV Offset-Max, 1300ns Response Time, BIPolar, CDIP14
For a full list of alternate parts for LM139J, check out Findchips.com