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The LM111, LM211, LM311 are voltage comparators that have low input currents.
They are also designed to operate over a wide range of supply voltages: from standard ±15V operational amplifier 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 and can switch voltages up to +50V at output currents as high as 50mA.Key Features
- Output current: 50mA
- Maximum input current: 150nA
- Differential input voltage range: ±30V
- Maximum offset current: 20nA
- Supply voltage: +5V to ±15V
- Power consumption:135mW at ±15V
Development Tools
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Picture Part number Manufacturer Description 
ST-OPAMPS-APP ST Operational amplifier and comparator application for smartphones and tablets Part NumberOperational amplifier and comparator application for smartphones and tablets
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| LM311D |
Active
|
SO-8 | Industrial | Ecopack3 | |
| LM311DT |
Active
|
SO-8 | Industrial | Ecopack3 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| LM311DT | 10 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SO-8 | 0 | 70 | MOROCCO | 0.15 / 1k | |
| LM311D | 6 distributors | Buy now |
Active
|
EAR99 | NEC | Tube | SO-8 | 0 | 70 | MOROCCO | 0.18 / 1k | |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors
