| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| LM139AD | Texas Instruments | $1.4997 | Comparator, 4 Func, 2000uV Offset-Max, 1300ns Response Time, BIPolar, PDSO14 | LM139FKB vs LM139AD |
| 5962R9673802VCX | National Semiconductor Corporation | Check for Price | Comparator, 4 Func, 2000uV Offset-Max, BIPolar, CDIP14 | LM139FKB vs 5962R9673802VCX |
| LM139J/NOPB | Texas Instruments | Check for Price | Comparator, 4 Func, 9000uV Offset-Max, 1300ns Response Time, BIPolar, CDIP14 | LM139FKB vs LM139J/NOPB |
| 5962-8773901CX | National Semiconductor Corporation | Check for Price | Comparator, 4 Func, 4000uV Offset-Max, 5000ns Response Time, BIPolar, CDIP14 | LM139FKB vs 5962-8773901CX |
| LM139A/BCA | YAGEO Corporation | Check for Price | Comparator, 4 Func, 4000uV Offset-Max, 1300ns Response Time, BIPolar, CDIP14 | LM139FKB vs LM139A/BCA |
| LM139AJ/883 | National Semiconductor Corporation | Check for Price | Comparator, 4 Func, 2000uV Offset-Max, 1000ns Response Time, BIPolar, CDIP14 | LM139FKB vs LM139AJ/883 |
| 5962R9673802VCA | Texas Instruments | Check for Price | Comparator, 4 Func, 2000uV Offset-Max, BIPolar, CDIP14 | LM139FKB vs 5962R9673802VCA |
| LM239AM | Fairchild Semiconductor Corporation | Check for Price | Comparator, 4 Func, 4000uV Offset-Max, 1300ns Response Time, BIPolar, PDSO14 | LM139FKB vs LM239AM |
| LM139AN | NXP Semiconductors | Check for Price | Comparator, PDIP14 | LM139FKB vs LM139AN |
| LM139AJ | Atmel Corporation | Check for Price | Comparator | LM139FKB vs LM139AJ |
Part Details for LM139FKB by Texas Instruments
Results Overview of LM139FKB by Texas Instruments
- Distributor Offerings: (2 listings)
- Number of FFF Equivalents: (0 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (10 options)
- CAD Models: (Request Part)
- 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.
LM139FKB Information
LM139FKB by Texas Instruments 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 LM139FKB
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
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Vyrian | Comparator, 4 Func, 9000uV Offset-Max, 1300ns Response Time, BIPolar, CQCC20 | 8107 |
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RFQ | |
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Win Source Electronics | Quad Differential Comparator 20-LCCC -55 to 125 | 47 |
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$21.7314 / $32.5970 | Buy Now |
US Tariff Estimator: LM139FKB by Texas Instruments
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.
LM139FKB Part Data Attributes
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LM139FKB
Texas Instruments
Buy Now
Datasheet
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Compare Parts:
LM139FKB
Texas Instruments
Comparator, 4 Func, 5000uV Offset-Max, 1300ns Response Time, BIPolar, CQCC20
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| Pbfree Code | Yes | |
| Part Life Cycle Code | Active | |
| Part Package Code | QLCC | |
| Package Description | Lccc-20 | |
| Pin Count | 20 | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.90 | |
| 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 | S-CQCC-N20 | |
| JESD-609 Code | e0 | |
| Length | 8.89 Mm | |
| Number of Functions | 4 | |
| Number of Terminals | 20 | |
| Operating Temperature-Max | 125 °C | |
| Operating Temperature-Min | -55 °C | |
| Output Type | Open-Collector; Open-Drain | |
| Package Body Material | Ceramic, Metal-Sealed Cofired | |
| Package Code | QCCN | |
| Package Equivalence Code | LCC20,.35SQ | |
| Package Shape | Square | |
| Package Style | Chip Carrier | |
| Packing Method | Tube | |
| Qualification Status | Not Qualified | |
| Response Time-Nom | 1300 Ns | |
| Screening Level | Mil-Std-883 | |
| Seated Height-Max | 2.03 Mm | |
| Supply Current-Max | 2 Ma | |
| Supply Voltage Limit-Max | 36 V | |
| Supply Voltage-Nom (Vsup) | 5 V | |
| Surface Mount | Yes | |
| Technology | Bipolar | |
| Temperature Grade | Military | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Terminal Form | No Lead | |
| Terminal Pitch | 1.27 Mm | |
| Terminal Position | Quad | |
| Width | 8.89 Mm |
Alternate Parts for LM139FKB
This table gives cross-reference parts and alternative options found for LM139FKB. 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 LM139FKB, 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.
LM139FKB 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 ensure a stable output, make sure to add a pull-up resistor to the output pin, and also add a small capacitor (e.g. 10nF) between the output and ground to filter out any noise or oscillations.
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The minimum input voltage difference required for the comparator to switch is typically around 1-2mV, but this can vary depending on the specific application and noise conditions.
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No, the LM139FKB 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.
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When the input voltages are very close or equal, the comparator may oscillate or produce an unstable output. To handle this, you can add hysteresis to the input signals using resistors and capacitors, or use a Schmitt trigger circuit to provide a clean switching threshold.