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LM139AJB - Texas Instruments

Description: Comparator Differential Open-Collector, CMOS, MOS, TTL 14-CDIP

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LM139AJB - Texas Instruments - PCB symbol
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PCB Footprints
LM139AJB - Texas Instruments PCB footprint - Ceramic Dual-In-Line Packages - Ceramic Dual-In-Line Packages - J0014A-021
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LM139AJB - Texas Instruments - 3D model - Ceramic Dual-In-Line Packages - J0014A-021
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LM139AJB Details

  • Manufacturer Part Number:

    LM139AJB

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    14

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.33.00.01

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Amplifier Type:

    COMPARATOR

  • Average Bias Current-Max (IIB):

    0.025 µA

  • Bias Current-Max (IIB) @25C:

    0.025 µA

  • Input Offset Voltage-Max:

    2000 µV

  • JESD-30 Code:

    R-GDIP-T14

  • JESD-609 Code:

    e0

  • Length:

    19.56 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:

    6.67 mm

LM139AJB 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 1.5V. Below this voltage, the comparator may not function correctly or may not function at all.
  • No, the LM139AJB 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 designed to amplify signals.
  • The pull-up resistor value depends on the load current required and the output voltage. A general rule of thumb is to choose a resistor value that limits the output current to 10-20mA. For example, if the output voltage is 5V and the load current is 10mA, a 1kΩ pull-up resistor would be suitable.

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LM139AJB 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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