| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| LM339AD | STMicroelectronics | $0.3347 | Comparator, 4 Func, 4000uV Offset-Max, 1300ns Response Time, BIPolar, PDSO14 | LM239AD vs LM339AD |
Part Details for LM239AD by STMicroelectronics
Results Overview of LM239AD by STMicroelectronics
- Distributor Offerings: (3 listings)
- Number of FFF Equivalents: (1 replacement)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (1 option)
- CAD Models: (Available)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
LM239AD Information
LM239AD by STMicroelectronics is a Comparator.
Comparators are under the broader part category of Amplifier Circuits.
Amplifier circuits use external power to increase the amplitude of an input signal. They can be used to perform linear amplifications or logarithmic functions. Read more about Amplifier Circuits on our Amplifier Circuits part category page.
Price & Stock for LM239AD
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
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DISTI #
LM239AD-ND
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DigiKey | IC COMPARATOR 4CH 14-SO Container: Tube |
0 Tube |
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Buy Now | |
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Quest Components | QUAD COMPARATOR, 4000 UV OFFSET-MAX, 1300 NS RESPONSE TIME, CDIP14 | 885 |
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$0.5000 / $1.2500 | Buy Now |
|
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Quest Components | QUAD COMPARATOR, 4000 UV OFFSET-MAX, 1300 NS RESPONSE TIME, CDIP14 | 30 |
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$0.2400 / $0.2880 | Buy Now |
US Tariff Estimator: LM239AD by STMicroelectronics
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
LM239AD CAD Models
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LM239AD Part Data Attributes
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LM239AD
STMicroelectronics
Buy Now
Datasheet
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Compare Parts:
LM239AD
STMicroelectronics
Comparator, 4 Func, 4000uV Offset-Max, 1300ns Response Time, BIPolar, PDSO14
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| 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 | |
| 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 |
Alternate Parts for LM239AD
This table gives cross-reference parts and alternative options found for LM239AD. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM239AD, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
LM239AD Frequently Asked Questions (FAQ)
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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.
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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.
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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.
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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.
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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.