
LM311D Linear - Comparators by Texas Instruments
LM311D is a Linear - Comparators from Texas Instruments in 8-SOIC packaging. It is commonly reviewed for IC DIFF COMP W/STROBE 8-SOIC. This page lists current TrustCompo stock, tier pricing, package data, datasheet access, compliance attributes, Hong Kong warehouse shipping options, payment confirmation, and RFQ options for buyers verifying this exact ordering code.
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Key specifications
- Part Number
LM311D
- Internal code
TCE000074628
- Package
8-SOIC
- Manufacturer
- Texas Instruments
Key specifications
- Series
-
- Min Quantity
1
- Category
- Integrated Circuits (ICs)
- Sub Category
- Linear - Comparators
- Description
IC DIFF COMP W/STROBE 8-SOIC
- key Attributes
-
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Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
Environmental management discipline across warehouse and operating workflows.
ESD Control
Electrostatic handling standards to help protect sensitive components.
RFQ checklist
Order process
Confirm the core buying details for LM311D before RFQ, PO release, and shipment planning.
- 1
Confirm MPN
Use the exact part number, manufacturer, package, and approval constraints in the RFQ.
- 2
Check stock and price
Verify live availability, MOQ, lead time, final unit price, and tax terms before PO release.
- 3
Align documents
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- 4
Arrange shipment
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Before PO release
Part confirmation
- Exact MPN confirmed: LM311D
- Package to verify: 8-SOIC
Commercial confirmation
- Live stock and lead time confirmed by RFQ
- Final price and tax terms confirmed before PO release
Fulfillment & documents
- Ship-from location: Hong Kong warehouse
- Shipping method: DHL, FedEx, UPS, or buyer forwarder account
Product overview
Product overview
Review the sourcing context for LM311D from Texas Instruments, including product identity, application fit, package notes, and purchasing considerations.
The LM311D is a high-speed voltage comparator manufactured by Texas Instruments. It is designed for a variety of applications, including signal conditioning, level detection, and waveform shaping. Here’s a detailed description of its features and characteristics:
Package and Pin Configuration
The LM311D typically comes in a dual-in-line package (DIP) format, which is a standard 8-pin configuration. The pins are arranged in two rows, making it easy to integrate into breadboards or PCB designs. The pinout includes:
- Inverting Input (Pin 2): This is where the voltage to be compared is applied.
- Non-Inverting Input (Pin 3): This is the reference voltage input.
- Output (Pin 6): This pin provides the output signal, which indicates the result of the comparison.
- Ground (Pin 4): This pin is connected to the circuit ground.
- VCC (Pin 8): This is the power supply pin, typically connected to a voltage source ranging from 5V to 30V.
- Compensation (Pin 1): This pin is used for frequency compensation, allowing for stable operation in various conditions.
- Open Collector Output (Pin 7): This output can sink current but requires an external pull-up resistor to function properly.
Electrical Characteristics
- Supply Voltage: The LM311D operates with a supply voltage range of 5V to 30V, making it versatile for different applications.
- Input Voltage Range: The input voltage can range from the negative supply voltage to the positive supply voltage.
- Output Voltage Swing: The output can swing close to the ground level when in the low state, making it suitable for interfacing with TTL logic levels.
- Propagation Delay: The LM311D features a fast response time, with a typical propagation delay of around 200 ns, allowing it to handle high-speed signals.
- Input Offset Voltage: The input offset voltage is typically around 2 mV, ensuring accurate comparisons.
Performance Features
- High Speed: The LM311D is designed for high-speed applications, making it suitable for use in fast signal processing circuits.
- Low Power Consumption: It consumes low power, which is beneficial for battery-operated devices.
- Hysteresis: The device can be configured to include hysteresis, which helps to prevent oscillation in noisy environments.
Applications
The LM311D is widely used in various applications, including:
- Zero-Crossing Detectors: To detect when an AC signal crosses zero volts.
- Level Shifters: To convert signals from one voltage level to another.
- Pulse Width Modulation (PWM): For generating PWM signals in motor control applications.
- Analog-to-Digital Converters: As a comparator stage in ADC circuits.
Conclusion
The LM311D from Texas Instruments is a versatile and reliable voltage comparator that offers high-speed performance and low power consumption. Its wide supply voltage range and ability to handle various input signals make it a popular choice in both industrial and consumer electronics applications. Whether used in simple signal detection or complex control systems, the LM311D provides accurate and efficient performance.
Technical parameters
Parameters
Compare grouped LM311D parameters from Texas Instruments, including package, series, key attributes, and technical values used for engineering and sourcing review.
Product Attribute
Part Status
Active
Product Attribute
Lead Free
Lead Free
Product Attribute
Packaging
Tube
Product Attribute
Lifecycle Status
ACTIVE (Last Updated: 2 days ago)
Product Attribute
Mounting Type
Surface Mount
Product Attribute
Factory Lead Time
6 Weeks
| Parameter | Value |
|---|---|
Part Status Lifecycle status of the part, such as active or obsolete. Indicates availability and long-term support from the manufacturer. Check this before design-in to avoid last-time buys or supply disruptions. Verify with the datasheet or distributor for current status. | Active |
Lead Free Indicates whether the component is manufactured without lead, complying with RoHS and similar regulations. Check this attribute to ensure environmental compliance for your market. Verify against the datasheet for exact material declarations. | Lead Free |
Packaging Indicates the form of delivery for the component, such as tape and reel, tube, or tray. This affects handling, storage, and assembly processes. Verify the packaging type matches your production requirements and equipment compatibility. | Tube |
Lifecycle Status Current stage in the product's lifecycle, such as Active, Obsolete, or End of Life. This indicates availability and long-term supply risk. Check this before designing in a part to ensure it will be available for your product's production lifetime. | ACTIVE (Last Updated: 2 days ago) |
Mounting Type Specifies how the component is attached to the PCB, such as through-hole or surface mount. This affects assembly processes, thermal performance, and mechanical strength. Buyers should verify compatibility with their manufacturing capabilities and design requirements. | Surface Mount |
Factory Lead Time Indicates the typical duration from order confirmation to shipment from the manufacturer's facility. This helps you plan production schedules and inventory. Verify current lead times with your distributor or supplier, as they may vary based on order quantity, product availability, and market conditions. | 6 Weeks |
Termination Describes the method used to connect the component to the circuit board, such as solder, press-fit, or wire wrap. This affects assembly processes, reliability, and repairability. Check the termination type against your PCB footprint and soldering process to ensure compatibility. | SMD/SMT |
Categories Lists the product categories or classifications assigned to this component, such as connectors, capacitors, or modules. This helps in filtering and comparing similar parts. Review the categories to ensure the component fits your application and to find alternative parts in the same class. | Integrated Circuits (ICs) |
Terminal Position Position of the terminals on the package, such as dual-in-line, gull-wing, or J-lead. This affects PCB layout, soldering, and thermal performance. Engineers must ensure the terminal position matches the footprint and assembly capabilities of their manufacturing line. | DUAL |
Peak Reflow Temperature (Cel) Maximum temperature during reflow soldering that the component can withstand. This is critical for solder joint reliability and preventing damage. Verify that the peak reflow temperature is compatible with your soldering profile and the component's moisture sensitivity level. | 260 |
Terminal Form Describes the physical configuration of the component's leads or pads, such as through-hole, surface mount, or gull-wing. This affects PCB layout, soldering process, and mechanical fit. Confirm compatibility with your assembly method and footprint. | GULL WING |
Manufacturer Identifies the company that designed and produced the component. Buyers often filter by manufacturer to ensure brand reliability, quality standards, and supply chain consistency. Verify the manufacturer against the datasheet and official packaging to avoid counterfeit parts. | Texas |
Max Junction Temperature (Tj) Specifies the highest temperature the semiconductor junction can sustain without damage or degradation. Compare this limit with your operating conditions and thermal management to ensure reliable performance. Verify against the datasheet for derating curves and long-term reliability. | 150°C |
Width Physical width of the component body, typically in millimeters. Essential for PCB footprint design and mechanical fit. Verify against the datasheet to ensure proper clearance and compatibility with your board layout and enclosure. | 3.91mm |
Height Physical height of the component, measured from the mounting surface to the topmost point. This dimension is critical for clearance in compact assemblies and for ensuring proper fit within enclosures. Always verify against the datasheet for tolerance and mounting considerations. | 1.75mm |
Package / Case Physical package or case type of the component, defining its dimensions, mounting style, and thermal characteristics. Common types include SMD, through-hole, BGA, and QFN. Choose the package that fits your PCB layout and assembly process. Verify the exact package code in the datasheet for footprint compatibility. | 8-SOIC (0.154, 3.90mm Width) |
Operating Temperature Specifies the ambient temperature range within which the component reliably functions. Compare this with your application's thermal environment to ensure proper operation. Always verify against the datasheet for derating curves and maximum ratings. | 0°C~70°C |
Operating Supply Voltage Specifies the voltage range within which the component operates correctly. Check the datasheet to ensure your power supply meets the minimum and maximum limits, as exceeding them can damage the device or cause malfunction. | 28V |
Subcategory A more specific classification within the main product category, such as 'Ceramic Capacitor' under 'Capacitors'. This helps narrow down search results and compare similar components. Use it to filter products with similar characteristics and intended applications. | Comparator |
Sub-Categories Indicates the specific product subcategories or classifications within the broader component family. Helps narrow down search results and identify the exact type of component needed for your design. Review the subcategory to ensure compatibility with your application. | Linear - Comparators |
Weight Specifies the physical weight of the electronic component, important for logistics, shipping cost, and mechanical design. Verify the exact weight in the datasheet or packaging information, as it may vary with packaging type and quantity. | 72.603129mg |
Number Of Functions Specifies the count of independent functions or channels integrated into a single component package. This helps engineers determine if the part can handle multiple signal paths or operations simultaneously. Verify against the datasheet to ensure the device meets your circuit's functional requirements. | 1 |
Radiation Hardening Indicates if the component is designed to withstand ionizing radiation in space, nuclear, or high-energy physics applications. Compare radiation-tolerant vs. radiation-hardened parts for mission-critical designs. Verify the total ionizing dose (TID) and single-event effect (SEE) ratings in the datasheet. | No |
Mounting Type Specifies how the component attaches to the PCB or assembly, such as surface mount, through-hole, or chassis mount. This affects soldering process, mechanical stability, and thermal performance. Verify compatibility with your board layout and assembly capabilities. | Surface Mount |
Pb-Free Code Indicates whether the component is lead-free per RoHS or other directives. Buyers use this to verify environmental compliance and avoid restricted substances. Always confirm with the datasheet or certificate of compliance. | yes |
Supply Voltage Specifies the nominal operating voltage that must be applied to the component for proper function. Verify this value against your system's power rail and the datasheet's absolute maximum ratings to ensure reliable operation and avoid damage. | 15V |
Number Of Circuits Specifies the total number of independent electrical paths or circuits within the component. This is critical for connectors, switches, and relay arrays to match the required wiring scheme. Always verify against the datasheet to ensure the circuit count meets your application's needs. | 1 |
Technology Manufacturing technology or process used for the component, such as thin film, thick film, or semiconductor process. Affects performance, stability, and cost. Confirm the technology matches your application requirements and environmental conditions. | BIPOLAR |
Type Select the component category that best matches your application, such as resistor, capacitor, diode, or connector. This classification helps narrow down the correct part family and ensures compatibility with your circuit design. Verify the type against the datasheet to avoid mismatches. | General Purpose |
Output Current Per Channel Specifies the maximum current each output channel can source or sink continuously. Compare this value with your load requirements to ensure the driver or amplifier can handle the current without overheating or damage. Always verify against the datasheet for absolute maximum ratings and derating curves. | 50mA |
Number Of Pins Total number of pins or contacts on the component. This determines the footprint and mating connector requirements. Always match the pin count to your PCB layout and connector specification to ensure proper electrical and mechanical connection. | 8 |
Number Of Terminations Indicates the total number of electrical connection points on the component, such as pins or pads. This is critical for PCB footprint design and assembly. Verify it matches the package specification to ensure proper soldering and connectivity. | 8 |
Pin Count Total number of pins or terminals on the component package. Essential for footprint design, PCB layout, and connector mating. Verify against the datasheet to ensure compatibility with your board and assembly process. | 8 |
Length Specifies the physical length of the component body, typically in millimeters. This dimension is critical for PCB layout and mechanical fit. Verify against the datasheet to ensure proper clearance and alignment in your design. | 4.9mm |
Input Offset Voltage (Vos) The DC voltage difference between the two input terminals of an operational amplifier or comparator. It indicates how closely the device matches ideal behavior. Compare this value across devices to ensure precision in your circuit design, and verify it against the datasheet for your operating conditions. | 2mV |
Output Current Current supplied at the output, indicating the load-driving capability of the component. This is crucial for ensuring the component can drive downstream circuitry without overheating or voltage drop. Compare with your load requirements and check the datasheet for maximum ratings. | 50mA |
Quiescent Current Quiescent current is the current drawn by the device when it is in standby or no-load condition. It affects battery life in portable applications. Compare this value across similar components to ensure low power consumption. Always verify against the datasheet for your specific operating conditions. | 7.5mA |
Max Supply Current Maximum current drawn from the power supply under specified operating conditions. Compare this value across similar components to estimate power consumption and thermal load. Always verify against the datasheet for your exact supply voltage and load scenario. | 7.5mA |
Nominal Supply Current Typical current drawn from the supply under nominal operating conditions. Compare this value across similar components to estimate power consumption and thermal behavior. Always verify against the datasheet for your specific voltage and load conditions. | 5.1mA |
Ambient Temperature Range High Defines the upper limit of ambient temperature for reliable operation without thermal damage or performance degradation. Ensure your system's cooling keeps the component below this threshold. Check the datasheet for derating curves and thermal resistance values. | 70°C |
Input Bias Current Specifies the DC current flowing into the input terminals of an operational amplifier or other analog IC. It affects offset voltage and signal accuracy. Compare values when selecting precision amplifiers, and verify against the datasheet for your operating conditions. | 250nA |
Max Input Current Specifies the highest continuous current the input pin can safely handle without damage or performance degradation. Compare this limit with your circuit's expected input current to ensure reliable operation. Always verify against the datasheet's absolute maximum ratings for your specific operating conditions. | 250nA |
Base Part Number Identifies the core product family without package, grade, or option suffixes. Use this to compare equivalent components across manufacturers and to locate the primary datasheet. Verify the full ordering code against the manufacturer's specification before design-in. | LM311 |
Input Offset Voltage (Max) Maximum DC voltage difference between the inverting and non-inverting inputs of an operational amplifier. This parameter indicates how closely the amplifier matches ideal behavior. Compare it with the datasheet to ensure precision for your application. | 7.5mV @ ±15V |
Response Time Time required for the device to respond to an input change. Critical for sensors, comparators, and protection circuits. Verify against the datasheet to ensure it meets your system's speed and latency requirements. | 165 ns |
Input Bias Current (Max) Maximum DC current flowing into the input pins of an op-amp or comparator. It affects offset voltage and precision in high-impedance circuits. Compare this value with your signal source impedance to ensure accuracy. Always verify against the datasheet for your operating conditions. | 0.25μA @ ±15V |
Output Type Specifies the electrical form of the output signal, such as digital, analog, or open collector. This determines how the component interfaces with your circuit. Verify the output type against your system requirements and the datasheet to ensure proper signal compatibility and avoid logic level mismatches. | MOS, Open-Collector, Open-Emitter, TTL |
Manufacturer'S Part No. The unique part number assigned by the original component manufacturer. Use this to cross-reference datasheets, verify specifications, and ensure the exact component matches your design requirements. Always confirm the number against the manufacturer's official documentation. | LM311D |
| Parameter | Value |
|---|---|
Terminal Finish Specifies the plating material on component terminals, affecting solderability, corrosion resistance, and long-term reliability. Compare finishes like tin, gold, or silver for your assembly process and environmental requirements. Verify against datasheet for compliance. | Nickel/Palladium/Gold (Ni/Pd/Au) |
Average Bias Current-Max (IIB) Specifies the maximum average input bias current, a key parameter for precision op-amps. Lower values reduce offset errors in high-impedance circuits. This is crucial for sensor signal conditioning and medical instrumentation. Always verify this value against your circuit's error budget. | 0.25μA |
Negative Supply Voltage (Nominal) Specifies the nominal negative supply voltage required for proper operation of the component. Compare this value with your power design to ensure compatibility. Always verify against the datasheet for absolute maximum ratings and tolerances. | -15V |
Dual Supply Voltage Check if the component needs both positive and negative supply rails. This affects power design and compatibility with your system. Verify the required voltages and tolerances in the datasheet before selecting the part. | 9V |
Total Dose Total ionizing dose tolerance for radiation-hardened components. Indicates maximum cumulative radiation exposure before performance degrades. Critical for aerospace, nuclear, and medical applications. Verify against datasheet for mission-specific radiation requirements. | 1.58mm |
Nominal Gain Bandwidth Product Indicates the frequency at which the open-loop gain of an amplifier falls to unity. Compare this value when selecting op-amps for high-speed signal processing. Verify against the datasheet to ensure adequate bandwidth for your application's required gain. | 106.02dB |
Supply Voltage (Single/Dual) Specifies the allowable supply voltage range for single or dual supply operation. Critical for ensuring the device operates within its rated limits. Verify against the datasheet for absolute maximum ratings and recommended operating conditions. | 3.5V~30V ±1.75V~15V |
| Parameter | Value |
|---|---|
RoHS Status Indicates whether the component complies with the EU RoHS directive restricting hazardous substances. Buyers should verify this status for regulatory compliance and market access. Check the datasheet or certificate for exact compliance details. | ROHS3 Compliant |
REACH SVHC Indicates whether the product contains substances of very high concern as per the REACH regulation. Buyers should verify this for compliance with EU environmental standards, especially when exporting to Europe. Check the manufacturer's declaration or datasheet for accurate SVHC status. | No SVHC |
Moisture Sensitivity Level (MSL) Indicates the floor life of a component before it must be baked prior to soldering. Higher levels require stricter handling and shorter exposure times. Verify the MSL rating in the datasheet to ensure proper storage and assembly conditions. | 1 (Unlimited) |
JESD-609 Code This code indicates the terminal finish material per JESD-609 standard. It helps identify the plating type for soldering compatibility and environmental compliance. Check the datasheet for the exact code and its meaning. | e4 |
ECCN Code Export Control Classification Number assigned by the U.S. Commerce Department. It determines export licensing requirements for electronic components. Verify the ECCN against the manufacturer's datasheet or export compliance documentation before shipping internationally. | EAR99 |
Notice documents
PCN / product notice documents
No public PCN / PDN records currently displayed
No public product notice document is currently displayed for LM311D. Confirm PCN, PDN, EOL, date code, and lifecycle status during RFQ before production purchase.
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Common questions
Product FAQ
Targeted answers for buyers verifying the exact LM311D ordering code, packaging, stock, datasheet, and replacement path.
What does LM311D mean?
LM311D is the exact ordering code listed for a Linear - Comparators component from Texas Instruments. The current package reference is 8-SOIC, with listed context including IC DIFF COMP W/STROBE 8-SOIC. Buyers should use the full code when requesting stock, price, datasheet, or compliance confirmation.
How should buyers verify the LM311D ordering code?
Treat LM311D as the full ordering code during RFQ and engineering review. Confirm the listed 8-SOIC package, manufacturer documentation from Texas Instruments, datasheet ordering table, reel or packing details, and any customer approval constraints before substitution or PO release.
What package is LM311D supplied in?
LM311D is currently listed with package reference 8-SOIC from Texas Instruments. Buyers should confirm the manufacturer package drawing, footprint, pinout, tape-and-reel details, and receiving requirements before approval.
Is LM311D currently available?
LM311D is currently marked with stock availability on this page. Before ordering, confirm the package (8-SOIC), listed stock (70863), available quantity (17855), required quantity, lead time, final price, compliance needs, and exact ordering code match through RFQ.
Where can I compare LM311D alternatives?
A mapped alternative list is not currently published for LM311D. Send an RFQ with the target quantity, package constraints, and approval requirements so TrustCompo can help review credible replacement options.





