component

LMV331

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by Ray

TI single general-purpose comparator, SOT-23-5. Open-collector output, 2.7-5.5 V, low power. Datasheet-verified.

componentcomparatoropen-collectorlow-voltagesot-23-5texas-instruments
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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

Same part, different packaging or reel option.

  • 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 (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