All trademarks are the property of their respective owners.
The LM111-N, LM211-N and LM311-N are voltage comparators that have input currents nearly a thousand times lower than devices like the LM106 or LM710. They are also designed to operate over a wider range of supply voltages: from standard ±15V op amp supplies down to the single 5V supply used for IC logic. Their output is compatible with RTL, DTL and TTL as well as MOS circuits. Further, they can drive lamps or relays, switching voltages up to 50V at currents as high as 50 mA.
Both the inputs and the outputs of the LM111-N, LM211-N or the LM311-N can be isolated from system ground, and the output can drive loads referred to ground, the positive supply or the negative supply. Offset balancing and strobe capability are provided and outputs can be wire OR'ed. Although slower than the LM106 and LM710 (200 ns response time vs 40 ns) the devices are also much less prone to spurious oscillations. The LM111-N has the same pin configuration as the LM106 and LM710.
The LM211-N is identical to the LM111-N, except that its performance is specified over a −25°C to +85°C temperature range instead of −55°C to +125°C. The LM311-N has a temperature range of 0°C to +70°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LM111/LM211/LM311 Voltage Comparator datasheet (Rev. E) | 27 Mar 2013 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 28 Mar 2017 | ||
| Application note | AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) | 06 May 2013 | ||
| Application note | AN-288 System-Oriented DC-DC Conversion Techniques (Rev. B) | 06 May 2013 | ||
| Application note | AN-298 Isolation Techniques for Signal Conditioning (Rev. B) | 06 May 2013 | ||
| Application note | Intro MF10 - Versatile Mono Active Filter Building Blk (Rev. C) | 23 Apr 2013 | ||
| Application note | AN-263 Sine Wave Generation Techniques (Rev. C) | 22 Apr 2013 | ||
| More literature | Die D/S LM311 MDA Voltage Comparator | 20 Sep 2012 | ||
| Application note | Circuit Techniques for Avoiding Oscillations in Comparator Applications | 02 Oct 2002 |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.