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LM239AD - STMicroelectronics

Description: Low-power quad voltage comparators SO-14 , 2V to 32V , 250mV , -65°C to +150°C

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LM239AD - STMicroelectronics - PCB symbol
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PCB Footprints
LM239AD - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO-14
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3D Models
LM239AD - STMicroelectronics - 3D model - Small Outline Packages - SO-14
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LM239AD Details

  • Manufacturer Part Number:

    LM239AD

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    ROHS COMPLIANT, PLASTIC, MICRO, SOP-14

  • Pin Count:

    14

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Amplifier Type:

    COMPARATOR

  • Average Bias Current-Max (IIB):

    0.3 µA

  • Bias Current-Max (IIB) @25C:

    0.1 µA

  • Input Offset Voltage-Max:

    4000 µV

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e4

  • Length:

    8.65 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    4

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    105 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Type:

    OPEN-COLLECTOR

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP14,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TUBE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Response Time-Nom:

    1300 ns

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    2 mA

  • Supply Voltage Limit-Max:

    32 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    40

  • Width:

    3.9 mm

LM239AD 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, add hysteresis to the comparator by connecting a small resistor (e.g., 1kΩ) between the output and the non-inverting input. This creates a small voltage difference between the input voltages, ensuring a stable output.
  • The minimum voltage difference required between the input pins to guarantee a valid output is typically around 2-5mV, depending on the specific application and noise conditions. However, it's recommended to maintain a voltage difference of at least 10-20mV for reliable operation.
  • No, the LM239AD is a comparator, not an amplifier. It's designed to compare two input voltages and produce a digital output, not to amplify a signal. Using it as an amplifier can lead to unstable operation and incorrect results.
  • When the input voltages are equal, the output of the comparator is undefined. To handle this situation, you can add a small capacitor (e.g., 10nF) between the output and ground to filter out any noise or oscillations. Alternatively, you can use a separate circuit to detect when the input voltages are equal and take appropriate action.

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LM239AD Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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