LM311M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM311M is a single voltage comparator IC from Texas Instruments with ±15V dual supply, 7.5mV max offset voltage, and open-collector output. Ideal for level detection, oscillators, and window comparator circuits. From $0.21 in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LM311M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2100(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM311M?
- Single voltage comparator with open-collector/open-emitter output, allowing flexible interfacing with various logic families
- Wide supply voltage range: single supply 5V to 36V or dual supply ±2.5V to ±18V for versatile system integration
- Low input offset voltage max 7.5mV and bias current max 0.3µA for accurate threshold detection
- Compatible with TTL, CMOS, RTL, and DTL logic levels, making it suitable for mixed-voltage designs
- Available in SO-8 small outline package for space-constrained PCB layouts
What is LM311M used for?
The LM311M is widely used in precision level detection circuits, zero-crossing detectors, and window comparators in industrial and consumer electronics. Its open-collector output makes it ideal for driving relay drivers, lamp drivers, and wired-OR configurations in motor control and power supply monitoring systems. It also serves in oscillator and pulse-width modulation circuits where accurate voltage threshold comparison is required.
What are the specifications of LM311M?
| Date Of Intro | 1988-05-01 |
| YTEOL | 0 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.3 µA |
| Bias Current-Max (IIB) @25C | 0.25 µA |
| Input Offset Voltage-Max | 7500 µV |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e0 |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 1 |
| Output Type | OPEN-COLLECTOR; OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 235 |
| Qualification Status | Not Qualified |
| Response Time-Nom | 200ns |
| Subcategory | Comparator |
| Supply Current-Max | 7.5mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 20 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM311M datasheet?
LM311M Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM311M?
Compatible alternatives and drop-in replacements for LM311M:
Comparator, 1 Func, 10000uV Offset-Max, 200ns Response Time, BIPolar, PDSO8
Comparator, 1 Func, 7500uV Offset-Max, 200ns Response Time, BIPolar, PDSO8
Frequently Asked Questions
What is the supply voltage range of the LM311M?
The LM311M operates from a single supply of 5V to 36V or a dual supply of ±2.5V to ±18V (nominal ±15V). The maximum negative supply voltage is -18V, providing flexibility for both single and split-rail power designs.
What output type does the LM311M use and how does it interface with logic families?
The LM311M features an open-collector and open-emitter output structure, which allows it to interface directly with TTL, CMOS, RTL, and DTL logic families. An external pull-up resistor is required on the output to set the high logic level.
What are typical applications for the LM311M voltage comparator?
Typical applications include precision level detectors, zero-crossing detectors, window comparators, oscillators, relay drivers, and pulse-width modulation circuits. It is also commonly used in power supply monitoring and motor control systems.
What is the input offset voltage of the LM311M?
The LM311M has a maximum input offset voltage of 7500 µV (7.5 mV) at 25°C, which determines the minimum detectable voltage difference between the two input pins in comparator applications.
What package is the LM311M available in?
The LM311M is available in an SO-8 (Small Outline 8-pin, JESD-30 code R-PDSO-G8) surface-mount package, suitable for compact PCB designs requiring reliable voltage comparison functionality.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.5600 | $1.56 |
| 104+ | $0.2812 | $29.24 |
| 357+ | $0.2400 | $85.68 |
| 772+ | $0.2100 | $162.12 |
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