Specifications
| Type | Description |
|---|---|
| Part Number | LM111 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | LCCC(20) 8.89 mm x 8.89 mm; CDIP(8) 9.60 mm x 6.67 mm; SO(8) 6.20 mm x 5.30 mm; SOIC(8) 4.90 mm x 3.91 mm; PDIP(8) 9.81 mm x 6.35 mm; TSSOP(8) 3.00 mm x 4.40 mm |
| Device Function | Single high-speed voltage comparator; LM111, LM211, LM311 family description |
| Response Time Feature | 165 ns; fast response time feature |
| Strobe Capability | Available; device feature |
| Maximum Input Bias Current Feature | 300 nA; device feature |
| Maximum Input Offset Current Feature | 70 nA; device feature |
| Single-Supply Operation | Can operate from single 5-V supply; device feature |
| Output Drive Capability | Up to 50 V at 50 mA; can drive lamps or relays and switch voltages |
| Strobe Output State | Output off when strobe is low; regardless of differential input |
| Positive Supply Voltage Absolute Maximum | 18 V; over operating free-air temperature range |
| Negative Supply Voltage Absolute Maximum | -18 V; over operating free-air temperature range |
| Total Supply Voltage Absolute Maximum | 36 V; VCC+ - VCC- |
| Differential Input Voltage Absolute Maximum | ±30 V; IN+ with respect to IN- |
| Input Voltage Absolute Maximum | ±15 V; either input; must not exceed supply magnitude or ±15 V, whichever is less |
| Emitter Output to VCC- Voltage Absolute Maximum | 30 V; voltage from emitter output to VCC- |
| Collector Output to VCC- Voltage Absolute Maximum | 50 V; LM111 |
| Collector Output to VCC- Voltage Absolute Maximum | 50 V; LM211 and LM211Q |
| Collector Output to VCC- Voltage Absolute Maximum | 40 V; LM311 |
| Output Short-Circuit Duration | 10 s; short circuit to ground |
| Operating Virtual-Junction Temperature | 150 °C; absolute maximum rating |
| Storage Temperature | -65 to 150 °C; absolute maximum rating |
| ESD Rating HBM | ±500 V; human body model, ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±750 V; charged-device model, JEDEC JESD22-C101 |
| Recommended Supply Voltage | 3.5 to 30 V; VCC+ - VCC- |
| Recommended Input Voltage Range | VCC- + 0.5 V to VCC+ - 1.5 V; |VI| <= 15 V |
| Operating Free-Air Temperature Range | -55 to 125 °C; LM111 |
| Operating Free-Air Temperature Range | -40 to 85 °C; LM211 |
| Operating Free-Air Temperature Range | -40 to 125 °C; LM211Q |
| Operating Free-Air Temperature Range | 0 to 70 °C; LM311 |
| Input Offset Voltage | 0.7 typ, 3 max mV; LM111/LM211/LM211Q, TA=25°C, VCC=±15 V |
| Input Offset Voltage | 2 typ, 7.5 max mV; LM311, TA=25°C, VCC=±15 V |
| Input Offset Voltage Full Range | 4 max mV; LM111/LM211/LM211Q, VCC=±15 V |
| Input Offset Voltage Full Range | 10 max mV; LM311, VCC=±15 V |
| Input Offset Current | 4 typ, 10 max nA; LM111/LM211/LM211Q, TA=25°C, VCC=±15 V |
| Input Offset Current | 6 typ, 50 max nA; LM311, TA=25°C, VCC=±15 V |
| Input Offset Current Full Range | 20 max nA; LM111/LM211/LM211Q, VCC=±15 V |
| Input Offset Current Full Range | 70 max nA; LM311, VCC=±15 V |
| Input Bias Current | 75 typ, 100 max nA; LM111/LM211/LM211Q, TA=25°C, 1 V <= VO <= 14 V |
| Input Bias Current | 100 typ, 250 max nA; LM311, TA=25°C, 1 V <= VO <= 14 V |
| Input Bias Current Full Range | 150 max nA; LM111/LM211/LM211Q, 1 V <= VO <= 14 V |
| Input Bias Current Full Range | 300 max nA; LM311, 1 V <= VO <= 14 V |
| Low-Level Strobe Current | -3 mA; TA=25°C, VID <= -10 mV, V(strobe)=0.3 V |
| Common-Mode Input Voltage Range Lower | -14.7 typ, -14.5 max V; full range, VCC=±15 V |
| Common-Mode Input Voltage Range Upper | 13 typ, 13.8 max V; full range, VCC=±15 V |
| Large-Signal Differential Voltage Amplification | 40 min, 200 typ V/mV; TA=25°C, 5 V <= VO <= 35 V, RL=1 kΩ |
| High-Level Collector Output Leakage Current | 0.2 typ, 10 max nA; TA=25°C, VID=5 mV, I(strobe)=-3 mA, VOH=35 V |
| High-Level Collector Output Leakage Current Full Range | 0.5 max µA; VID=5 mV, I(strobe)=-3 mA, VOH=35 V |
| High-Level Collector Output Leakage Current | 0.2 typ, 50 max nA; TA=25°C, VID=5 mV, VOH=35 V |
| Low-Level Collector-to-Emitter Output Voltage | 0.75 typ, 1.5 max V; TA=25°C, VID=-5 mV, IOL=50 mA |
| Low-Level Collector-to-Emitter Output Voltage | 0.75 typ, 1.5 max V; TA=25°C, VID=-10 mV, IOL=50 mA |
| Low-Level Output Voltage Full Range | 0.23 typ, 0.4 max V; VCC+=4.5 V, VCC-=0 V, VID=-6 mV, IOL=8 mA |
| Low-Level Output Voltage Full Range | 0.23 typ, 0.4 max V; VCC+=4.5 V, VCC-=0 V, VID=-10 mV, IOL=8 mA |
| Positive Supply Current Output Low | 5.1 typ, 6 max mA; LM111/LM211/LM211Q, TA=25°C, VID=-10 mV, no load |
| Positive Supply Current Output Low | 5.1 typ, 7.5 max mA; LM311, TA=25°C, VID=-10 mV, no load |
| Negative Supply Current Output High | -4.1 typ, -5 max mA; TA=25°C, VID=10 mV, no load |
| Low-to-High Output Response Time | 115 ns typ; VCC=±15 V, TA=25°C, RC=500 Ω to 5 V, CL=5 pF, 100-mV input step with 5-mV overdrive |
| High-to-Low Output Response Time | 165 ns typ; VCC=±15 V, TA=25°C, RC=500 Ω to 5 V, CL=5 pF, 100-mV input step with 5-mV overdrive |
| Datasheet Status | request_only |
Product Overview
The LM111 is a Texas Instruments differential voltage comparator in the Signal_Chain category. The device is described as a single high-speed voltage comparator within the LM111, LM211, and LM311 family. It includes strobe capability, with the output off when the strobe input is low regardless of differential input condition.
Electrical limits include 18 V positive supply, -18 V negative supply, and 36 V total supply absolute maximum ratings. The recommended supply range is 3.5 to 30 V, and the recommended input voltage range is from VCC- + 0.5 V to VCC+ - 1.5 V with |VI| <= 15 V. For LM111, the operating free-air temperature range is -55 to 125 °C.
The LM111 supports package choices including LCCC(20), CDIP(8), SO(8), SOIC(8), PDIP(8), and TSSOP(8). Output capability includes switching up to 50 V at 50 mA, allowing lamp or relay drive and voltage switching applications.
Key Features
- Single high-speed voltage comparator function
- 165 ns fast response time feature
- Strobe capability with output-off low strobe state
- Maximum input bias current feature of 300 nA
- Maximum input offset current feature of 70 nA
- Can operate from a single 5-V supply
- Output drive up to 50 V at 50 mA
- Recommended supply voltage range of 3.5 to 30 V
- LM111 operating range from -55 to 125 °C
- Package options include LCCC, CDIP, SO, SOIC, PDIP, TSSOP
Typical Applications
- Voltage comparison circuits
- Single 5-V supply comparator designs
- Lamp drive circuits
- Relay drive circuits
- Voltage switching circuits
- Strobe-gated comparator outputs
- Wide-temperature LM111 signal-chain designs
Procurement Notes
When requesting a quote for LM111, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of device is the LM111?
The LM111 is a Texas Instruments differential voltage comparator described as a single high-speed voltage comparator in the LM111, LM211, and LM311 family.
What response time is specified for LM111 family operation?
The extracted datasheet facts list a 165 ns fast response time feature. Electrical characteristics also list 115 ns typical low-to-high output response and 165 ns typical high-to-low output response under ±15 V test conditions.
Can the LM111 operate from a single supply?
Yes. The extracted facts state that the device can operate from a single 5-V supply. The recommended total supply voltage range is 3.5 to 30 V across VCC+ and VCC-.
What packages are listed for this comparator?
The package list includes LCCC(20), CDIP(8), SO(8), SOIC(8), PDIP(8), and TSSOP(8), with dimensions provided for each package case in the extracted datasheet facts.
What output drive capability is listed for the LM111?
The extracted facts state that the output drive capability is up to 50 V at 50 mA. The same fact notes use for driving lamps or relays and switching voltages.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 25, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.