Product details


Number of channels (#) 1 Output type Open-collector, Open-drain Propagation delay time (µs) 0.2 Vs (Max) (V) 36 Vs (Min) (V) 5 Vos (offset voltage @ 25 C) (Max) (mV) 3 Iq per channel (Typ) (mA) 5.1 Input bias current (+/-) (Max) (nA) 100 Rail-to-rail No Rating Catalog, Military Operating temperature range (C) -55 to 125 Features Strobe, Vos Adj Pin VICR (Max) (V) 34 VICR (Min) (V) 0.5 open-in-new Find other Comparators

Package | Pins | Size

CDIP (NAB) 8 66 mm² 10.16 x 6.5 TO-CAN (LMC) 8 80 mm² 8.96 x 8.96 open-in-new Find other Comparators


  • Operates From Single 5V Supply
  • Input Current: 150 nA Max. Over Temperature
  • Offset Current: 20 nA Max. Over Temperature
  • Differential Input Voltage Range: ±30V
  • Power Consumption: 135 mW at ±15V

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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.

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Technical documentation

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Type Title Date
* Data sheet LM111/LM211/LM311 Voltage Comparator datasheet (Rev. E) Mar. 27, 2013
E-book The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Application note LB-12 An IC Voltage Comparator for High Impedance Circuitry (Rev. B) May 06, 2013
Application note AN-41 Precision IC Comparator Runs from ±5V Logic Supply (Rev. B) May 01, 2013
More literature Die D/S LM111 MD8 MCD1150A Voltage Comparator Dec. 20, 2012
More literature Die D/S LM111 MD8 MCD1390A Voltage Comparator Dec. 20, 2012
More literature Die D/S LM111 MD8 MCD2000A Voltage Comparator Dec. 20, 2012
More literature Die D/S LM111 MD8 MCD2430A Voltage Comparator Dec. 20, 2012
More literature Die D/S LM111 MDS MCD1680A Voltage Comparator Dec. 20, 2012
More literature Die D/S LM111 MW8 MCD1180A Voltage Comparator Dec. 20, 2012
Application note AN-46 The Phase Locked Loop IC as a Communication System Building Block May 14, 2004
Application note Circuit Techniques for Avoiding Oscillations in Comparator Applications Oct. 02, 2002
Application note Microvolt Comparator Oct. 02, 2002

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TO-99 (LMC) 8 View options

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