Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Channels | 1 comparator |
| Response Time | 165 ns stated |
| Control | Strobe capability |
| Output | Collector/emitter output transistor pins support flexible load/reference arrangements |
| Supply | Can operate from a single 5 V supply or wider dual/single rails within family limits |
| Bias Current | 300 nA maximum input bias current stated |
| Temperature | −40°C to +85°C exact order-code range |
| Exact Package / Packing | SOIC (D), 8 pins; 2500-piece large reel; marking LM211 |
Product Overview
LM211DR is a classic single high-speed comparator with a strobe function and a more flexible output stage than simple open-collector dual/quad comparators. The separate output transistor connections can support unusual level-shifting and wired configurations.
The 165 ns response class is much faster than standard LM393/LM339-style comparators, making LM211 suitable for zero-crossing, oscillators and timing detection where microsecond-class devices are too slow.
Its exact DR order code is the industrial-temperature SOIC-8 large-reel version. It is not an automotive or military-temperature variant.
For related devices, see HKEQGOO’s Comparators category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | LM211DR |
| Channels | 1 comparator |
| Response Time | 165 ns stated |
| Control | Strobe capability |
| Output | Collector/emitter output transistor pins support flexible load/reference arrangements |
| Supply | Can operate from a single 5 V supply or wider dual/single rails within family limits |
| Bias Current | 300 nA maximum input bias current stated |
| Temperature | −40°C to +85°C exact order-code range |
| Exact Package / Packing | SOIC (D), 8 pins; 2500-piece large reel; marking LM211 |
| Manufacturer Status | Active / Production |
| Part Marking | LM211 |
Functional Highlights
Strobe input can disable or gate comparator response
This supports sampled or synchronized threshold detection without adding a separate downstream logic gate.
Flexible output transistor enables nonstandard logic interfacing
Collector/emitter accessibility can simplify level translation or custom pull-up/pull-down arrangements when used within ratings.
Design Considerations
- Design output pull-up/load around the required switching speed and voltage.
- Account for overdrive-dependent propagation delay in timing-critical thresholds.
- Keep fast comparator input/output routing separated to prevent oscillation from positive feedback through parasitics.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists LM211DR as Active / Production; SOIC (D), 8 pins; 2500-piece large tape and reel; −40°C to +85°C; marking LM211.
Related Engineering Resources
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