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docs lm2901dr2g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers lm2901dr2g: viewers · Ray 2mo ago
lm2901dr2g-etched.fit.json lm2901dr2g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm2901dr2g-etched.glb lm2901dr2g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm2901dr2g-etched.step lm2901dr2g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lm2901dr2g.glb Publish 0.1.0 · Ray 2mo ago
lm2901dr2g.kicad_mod Publish 0.1.0 · Ray 2mo ago
lm2901dr2g.kicad_sym Publish 0.1.0 · Ray 2mo ago
lm2901dr2g.lbr Publish 0.1.0 · Ray 2mo ago
lm2901dr2g.step Publish 0.1.0 · Ray 2mo ago
package.json Publish 0.2.0 · Ray 2mo ago
page.json lm2901dr2g: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 28d ago
README.md lm2901dr2g: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

LM2901DR2G

onsemi · Comparators · SOIC-14

LM2901DR2G from onsemi, in a SOIC-14. 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 OUT2 output Open-collector output of comparator 2. Requires external pull-up resistor to the desired logic-high rail. Sinks up to ~16 mA typical.
2 OUT1 output Open-collector output of comparator 1. Requires external pull-up resistor.
3 VCC power_in Positive supply pin. Single-supply operation 3 V to 36 V, or split supply ±1.5 V to ±18 V.
4 IN1- input Inverting input of comparator 1. Common-mode range includes ground (V- to VCC-1.5 V).
5 IN1+ input Non-inverting input of comparator 1. Common-mode range includes ground.
6 IN2- input Inverting input of comparator 2.
7 IN2+ input Non-inverting input of comparator 2.
8 IN3- input Inverting input of comparator 3.
9 IN3+ input Non-inverting input of comparator 3.
10 OUT3 output Open-collector output of comparator 3. Requires external pull-up resistor.
11 OUT4 output Open-collector output of comparator 4. Requires external pull-up resistor.
12 IN4+ input Non-inverting input of comparator 4.
13 IN4- input Inverting input of comparator 4.
14 GND power_in Negative supply / ground pin. Tied to V- in split-supply operation, or ground in single-supply operation.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-14
Category Op-amp/Cmp
Pins 14

Ordering variants

Same part, different packaging or reel option.

  • LM2901DR2G
  • LM2901DR2GDG
  • LM2901DR2GOS
  • LM2901DR2GEDR2G
  • LM2901DR2GN
  • LM2901DR2GNG
  • LM2901DR2GDTBR2G

CAD (KiCad official)

  • Symbol: LM2901DR2G
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)
  • 3D model files: lm2901dr2g-etched.step / lm2901dr2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2901dr2g.step / lm2901dr2g.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2901dr2g.step 195 KB You want the bare part, or you mark your own boards.
lm2901dr2g-etched.step 2.4 MB You want the part with LM2901DR2G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 606 faces against 237 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: onsemi datasheet (11 pp, sha256 3b485eacd313bdb1, 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