Part Details for LM311DR2 by onsemi
Results Overview of LM311DR2 by onsemi
- Distributor Offerings: (4 listings)
- Number of FFF Equivalents: (4 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (10 options)
- 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.
LM311DR2 Information
LM311DR2 by onsemi 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 LM311DR2
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
LM311DR2
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Avnet Americas | - Tape and Reel (Alt: LM311DR2) RoHS: Not Compliant Min Qty: 2500 Package Multiple: 2500 Lead time: 111 Weeks, 0 Days Container: Reel | 0 |
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RFQ | |
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Bristol Electronics | 461 |
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RFQ | ||
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Rochester Electronics | Comparator, 1 Func, 10000uV Offset-Max, 200ns Response Time, BIPolar, PDSO8 RoHS: Compliant Status: Obsolete Min Qty: 1 | 1051 |
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$0.1392 / $0.2245 | Buy Now |
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Chip 1 Exchange | INSTOCK | 451 |
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RFQ |
Part Details for LM311DR2
LM311DR2 CAD Models
LM311DR2 Part Data Attributes
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LM311DR2
onsemi
Buy Now
Datasheet
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Compare Parts:
LM311DR2
onsemi
Comparator, Single, SOIC-8 Narrow Body, 2500-REEL
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| Pbfree Code | No | |
| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | ONSEMI | |
| Part Package Code | SOIC-8 Narrow Body | |
| Package Description | SOIC-8 | |
| Pin Count | 8 | |
| Manufacturer Package Code | 751-07 | |
| Reach Compliance Code | not_compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Factory Lead Time | 111 Weeks | |
| Samacsys Manufacturer | onsemi | |
| Amplifier Type | COMPARATOR | |
| Average Bias Current-Max (IIB) | 0.3 µA | |
| Input Offset Voltage-Max | 10000 µV | |
| JESD-30 Code | R-PDSO-G8 | |
| JESD-609 Code | e0 | |
| Length | 4.9 mm | |
| Moisture Sensitivity Level | 1 | |
| Neg Supply Voltage Limit-Max | -18 V | |
| Neg Supply Voltage-Nom (Vsup) | -15 V | |
| Number of Functions | 1 | |
| Number of Terminals | 8 | |
| Operating Temperature-Max | 70 °C | |
| Operating Temperature-Min | ||
| Output Type | OPEN-COLLECTOR | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | SOP | |
| Package Equivalence Code | SOP8,.25 | |
| Package Shape | RECTANGULAR | |
| Package Style | SMALL OUTLINE | |
| Peak Reflow Temperature (Cel) | 235 | |
| Qualification Status | Not Qualified | |
| Response Time-Nom | 200 ns | |
| Seated Height-Max | 1.75 mm | |
| Supply Voltage Limit-Max | 18 V | |
| Supply Voltage-Nom (Vsup) | 15 V | |
| Surface Mount | YES | |
| Technology | BIPOLAR | |
| Temperature Grade | COMMERCIAL | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Terminal Form | GULL WING | |
| Terminal Pitch | 1.27 mm | |
| Terminal Position | DUAL | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Width | 3.9 mm |
Alternate Parts for LM311DR2
This table gives cross-reference parts and alternative options found for LM311DR2. 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 LM311DR2, 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.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| LM311DR | Texas Instruments | $0.1588 | High Speed, 30V, Differential Comparator With Strobes 8-SOIC 0 to 70 | LM311DR2 vs LM311DR |
| LM311DG4 | Texas Instruments | $0.2740 | High Speed, 30V, Differential Comparator With Strobes 8-SOIC 0 to 70 | LM311DR2 vs LM311DG4 |
| LM311DRG4 | Texas Instruments | Check for Price | High Speed, 30V, Differential Comparator With Strobes 8-SOIC 0 to 70 | LM311DR2 vs LM311DRG4 |
| LM311DE4 | Texas Instruments | Check for Price | High Speed, 30V, Differential Comparator With Strobes 8-SOIC 0 to 70 | LM311DR2 vs LM311DE4 |
LM311DR2 Frequently Asked Questions (FAQ)
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The LM311DR2 is a high-speed comparator, and as such, it requires careful PCB design and layout to minimize noise and ensure reliable operation. It is recommended to keep the input traces short and away from noise sources, use a solid ground plane, and decouple the power supply with a 0.1uF capacitor. Additionally, it is recommended to use a low-ESR capacitor for the output filter capacitor (CF) to minimize ringing and oscillations.
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The output pull-up resistor (RP) value depends on the specific application and the load connected to the output. A general rule of thumb is to choose a value that is low enough to ensure a fast rise time, but high enough to limit the current and prevent excessive power consumption. A typical value for RP is in the range of 1kΩ to 10kΩ. It is also important to consider the output capacitance and the load capacitance when selecting the RP value.
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The LM311DR2 is a high-speed comparator with a response time of 40ns, which corresponds to a maximum frequency of operation of around 10MHz. However, the actual frequency of operation depends on the specific application, the input signal frequency, and the output load. It is recommended to consult the datasheet and perform simulations or testing to determine the maximum frequency of operation for a specific application.
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No, the LM311DR2 is a comparator, not a voltage regulator or amplifier. It is designed to compare two input voltages and output a digital signal indicating which input is higher. It is not designed to regulate voltage or amplify signals. Using the LM311DR2 as a voltage regulator or amplifier can lead to unstable operation, oscillations, or even damage to the device.
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When the output of the LM311DR2 is not connected to a load, it is recommended to connect a pull-down resistor (RD) to ground to prevent the output from floating. The value of RD should be chosen to be high enough to limit the current, but low enough to ensure a fast fall time. A typical value for RD is in the range of 10kΩ to 100kΩ.