LT1011/LT1011A - Voltage Comparator


  • Pin-Compatible with LM111 Series Devices
  • Guaranteed Max. 0.5mV Input Offset Voltage
  • Guaranteed Max. 25nA Input Bias Current
  • Guaranteed Max. 3nA Input Offset Current
  • Guaranteed Max. 250ns Response Time
  • Guaranteed Min. 200,000 Voltage Gain
  • 50mA Output Current Source or Sink
  • ±30V Differential Input Voltage
  • Fully Specified for Single 5V Operation
  • Available in 8-Lead PDIP and SO Packages

Typical Application

LT1011 Typical Application
LT1011 Typical Application


The LT1011 is a general purpose comparator with significantly better input characteristics than the LM111. Although pin compatible with the LM111, it offers four times lower bias current, six times lower offset voltage and five times higher voltage gain. Offset voltage drift, a previously unspecified parameter, is guaranteed at 15μV/°C. Additionally, the supply current is lower by a factor of two with no loss in speed. The LT1011 is several times faster than the LM111 when subjected to large overdrive conditions. It is also fully specified for DC parameters and response time when operating on a single 5V supply. The LT1011 retains all the versatile features of the LM111, including single 3V to ±18V supply operation, and a floating transistor output with 50mA source/sink capability. It can drive loads referenced to ground, negative supply or positive supply, and is specified up to 50V between V– and the collector output. A differential input voltage up to the full supply voltage is allowed, even with ±18V supplies, enabling the inputs to be clamped to the supplies with simple diode clamps.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LT1011ACN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1011AIS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1011AIS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1011AMJ8 CERDIP-8 J M 05-08-1110 (J8) No
LT1011CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1011CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1011CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1011IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1011IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes

LT1011 Package Drawing
LT1011 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LT1011ACN8#PBF N-8 C $3.50 $2.75 Yes
LT1011AIS8#PBF SO-8 I $3.55 $2.95 Yes
LT1011AIS8#TRPBF SO-8 I $3.01 Yes
LT1011AMJ8 CERDIP-8 M $66.00 No
LT1011CN8#PBF N-8 C $1.58 $1.30 Yes
LT1011CS8#PBF SO-8 C $2.00 $1.60 Yes
LT1011CS8#TRPBF SO-8 C $1.66 Yes
LT1011IS8#PBF SO-8 I $2.25 $1.85 Yes
LT1011IS8#TRPBF SO-8 I $1.91 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards


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