| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| BU7251SG-TR | ROHM Semiconductor | $0.5312 | Comparator, 1 Func, 11000uV Offset-Max, 50ns Response Time, CMOS, PDSO5 | LM397MFX vs BU7251SG-TR |
| LM7805-220M | TT Electronics Power and Hybrid / Semelab Limited | Check for Price | Fixed Positive Standard Regulator, 5V, PSFM3 | LM397MFX vs LM7805-220M |
| NJU7142F | New Japan Radio Co Ltd | Check for Price | Comparator, 1 Func, 10000uV Offset-Max, 500ns Response Time, CMOS, PDSO5 | LM397MFX vs NJU7142F |
| LM7805-220M | TT Electronics Resistors | Check for Price | Fixed Positive Standard Regulator, 5V, PSFM3 | LM397MFX vs LM7805-220M |
| NJU7116F | New Japan Radio Co Ltd | Check for Price | Comparator, 1 Func, 2500uV Offset-Max, 3300ns Response Time, CMOS, PDSO5 | LM397MFX vs NJU7116F |
Part Details for LM397MFX by Texas Instruments
Results Overview of LM397MFX by Texas Instruments
- Distributor Offerings: (3 listings)
- Number of FFF Equivalents: (5 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (10 options)
- 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.
Applications
Internet of Things (IoT)
Environmental Monitoring
Industrial Automation
Transportation and Logistics
Agriculture Technology
Telecommunications
Automotive
Education and Research
Computing and Data Storage
Aerospace and Defense
Healthcare
Electronic Manufacturing
Renewable Energy
Robotics and Drones
LM397MFX Information
LM397MFX 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.
Available Datasheets
| Part # | Manufacturer | Description | Datasheet |
|---|---|---|---|
| LM397MFX/NOPB | Texas Instruments | Single General Purpose Voltage Comparator 5-SOT-23 -40 to 85 |
Price & Stock for LM397MFX
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
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DISTI #
LM397MFXTR-ND
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DigiKey | IC COMPARATOR 1CH SOT-23-5 Min Qty: 3000 Container: Tape & Reel |
0 Tape & Reel |
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$0.2852 / $0.3060 | Buy Now |
|
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Chip Stock | Single General Purpose Voltage Comparator 5-SOT-23 -40 to 85 | 28130 |
|
RFQ | |
|
|
Win Source Electronics | Comparator Single ±15V/30V 5-Pin SOT-23 T/R / IC COMPARATOR VOLT SGL SOT23-5 | 36560 |
|
$0.2346 / $0.3519 | Buy Now |
US Tariff Estimator: LM397MFX 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.
LM397MFX CAD Models
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LM397MFX Part Data Attributes
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LM397MFX
Texas Instruments
Buy Now
Datasheet
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Compare Parts:
LM397MFX
Texas Instruments
Comparator, 1 Func, 10000uV Offset-Max, 940000ns Response Time, PDSO5
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| Pbfree Code | No | |
| Part Life Cycle Code | Obsolete | |
| Part Package Code | SOT-23 | |
| Package Description | Sot-23, 5 Pin | |
| Pin Count | 5 | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.60 | |
| Amplifier Type | Comparator | |
| Average Bias Current-Max (IIB) | 0.4 µA | |
| Bias Current-Max (IIB) @25C | 0.25 µA | |
| Input Offset Voltage-Max | 10000 µV | |
| JESD-30 Code | R-PDSO-G5 | |
| JESD-609 Code | e0 | |
| Length | 2.9 Mm | |
| Moisture Sensitivity Level | 1 | |
| Neg Supply Voltage Limit-Max | ||
| Neg Supply Voltage-Nom (Vsup) | ||
| Number of Functions | 1 | |
| Number of Terminals | 5 | |
| Operating Temperature-Max | 85 °C | |
| Operating Temperature-Min | -40 °C | |
| Output Type | Open-Collector | |
| Package Body Material | Plastic/Epoxy | |
| Package Code | LSSOP | |
| Package Equivalence Code | TSOP5/6,.11,37 | |
| Package Shape | Rectangular | |
| Package Style | Small Outline, Low Profile, Shrink Pitch | |
| Peak Reflow Temperature (Cel) | 260 | |
| Qualification Status | Not Qualified | |
| Response Time-Nom | 940000 Ns | |
| Seated Height-Max | 1.22 Mm | |
| Supply Current-Max | 2 Ma | |
| Supply Voltage Limit-Max | 30 V | |
| Supply Voltage-Nom (Vsup) | 5 V | |
| Surface Mount | Yes | |
| Temperature Grade | Industrial | |
| Terminal Finish | Tin Lead | |
| Terminal Form | Gull Wing | |
| Terminal Pitch | 0.953 Mm | |
| Terminal Position | Dual | |
| Width | 1.6 Mm |
Alternate Parts for LM397MFX
This table gives cross-reference parts and alternative options found for LM397MFX. 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 LM397MFX, 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.
LM397MFX Frequently Asked Questions (FAQ)
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Texas Instruments provides a recommended PCB layout in the application note SLVAE04, which includes guidelines for component placement, trace routing, and thermal management to ensure optimal performance and minimize noise.
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To ensure stability, follow the guidelines in the datasheet for selecting the output capacitor and resistor values. Additionally, ensure that the input and output capacitors are placed close to the device, and use a low-ESR capacitor for the output. Also, consider adding a small resistor in series with the output capacitor to dampen oscillations.
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Although the datasheet specifies a maximum input voltage of 15V, it's recommended to limit the input voltage to 12V to ensure reliable operation and prevent damage to the device.
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Use the equations provided in the datasheet to calculate the power dissipation based on the input voltage, output voltage, and output current. Then, use the thermal resistance values provided in the datasheet to estimate the junction temperature. Consider using thermal simulation tools or thermal analysis software to get a more accurate estimate.
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The LM397MFX is rated for operation up to 125°C, but its performance and reliability may degrade at high temperatures. Consider using a heat sink or thermal management techniques to keep the junction temperature below 100°C for optimal performance and reliability.