component

LM2903DGKR

Public Unreviewed

by Ray

Texas Instruments Comparators, VSSOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentop-amp-cmplm2903dgkr
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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

LM2903DGKR

Texas Instruments · Comparators · VSSOP-8

LM2903DGKR from Texas Instruments, in a VSSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 1OUT output Open-collector output of comparator 1. Requires an external pull-up resistor to VCC. Can sink current when the non-inverting input is below the inverting input.
2 1IN- input Inverting input of comparator 1. Common-mode input voltage range includes ground.
3 1IN+ input Non-inverting input of comparator 1. Common-mode input voltage range includes ground.
4 GND power_in Ground / negative supply. Typically 0 V in single-supply operation, or V- in split-supply operation.
5 2IN+ input Non-inverting input of comparator 2. Common-mode input voltage range includes ground.
6 2IN- input Inverting input of comparator 2. Common-mode input voltage range includes ground.
7 2OUT output Open-collector output of comparator 2. Requires an external pull-up resistor to VCC. Can sink current when the non-inverting input is below the inverting input.
8 VCC power_in Positive supply. Single-supply operation 2 V to 36 V, or split-supply ±1 V to ±18 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VSSOP-8
Category Op-amp/Cmp
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LM2903DGKR
  • LM2903DGKRDGKT
  • LM2903DGKRDR
  • LM2903DGKRDT
  • LM2903DGKRPWR

CAD (KiCad official)

  • Symbol: LM2903DGKR
  • Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
  • 3D model: VSSOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2903dgkr.step 122 KB You want the bare part, or you mark your own boards.
lm2903dgkr-etched.step 2.2 MB You want the part with LM2903DGKR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 546 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (56 pp, sha256 24c6b3c03dd65dfd, 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