LMV331

@@ -0,0 +1,48 @@+# LMV331++**Texas Instruments** · Single comparator · SOT-23-5++Single low-voltage comparator with an open-collector output, in a SOT-23-5. It compares the two inputs and pulls OUT low when IN- is above IN+, and the open-collector stage needs a pull-up so the output can swing to any rail up to the supply, which makes level translation easy. It runs from a single 2.7 to 5.5 V supply at low current. The single-channel member of the LMV331/393/339 low-voltage comparator family.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | IN+ | input | Comparator non-inverting (positive) input. Common-mode input range includes ground: -0.1V to 2V at Vcc=2.7V, -0.1V to 4.2V at Vcc=5V. Input bias current 5nA typical, 250nA max. |+| 2 | GND | power_in | Device ground / negative supply reference. All voltages except differential inputs are referenced to this network GND. |+| 3 | IN- | input | Comparator inverting (negative) input. Common-mode input range includes ground: -0.1V to 2V at Vcc=2.7V, -0.1V to 4.2V at Vcc=5V. Differential input range ±5.5V max. |+| 4 | OUT | output | Open-collector comparator output. Requires an external pull-up resistor to Vcc (or another rail up to Vcc+0.3V). Sinks 23mA typical (5mA min) at Vcc=2.7V, 84mA typical (10mA min) at Vcc=5V with Vo<=1.5V. Vsat typ 150mV. |+| 5 | VCC+ | power_in | Positive supply. Single-supply operation 2.7V to 5.5V (absolute max 5.5V). Icc typical 26µA (LMV331 single). |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Single comparator (open-collector output) |+| Supply | 2.7-5.5 V |+| Output | Open collector (needs pull-up) |+| Input common-mode | Ground to V+ - 1.2 V |+| Response time | ~200 ns |+| Supply current | 55 uA (typ) |+| Package | SOT-23-5 |++## Ordering variants++- `LMV331IDBVR (SOT-23-5, tape & reel)`+- `LMV331IDCKR (SC-70-5)`++## CAD (KiCad official)++- Symbol: `Comparator:LMV331 (KiCad official)`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/lmv331.pdf) (44 pp, sha256 `174a310f6a5803a6`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lmv331-datasheet.pdf)

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