LM2901DR from Texas Instruments, 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	1OUT	output	Open-collector output of comparator 1. Requires an external pull-up resistor to a positive supply. Sinks up to ~16 mA typical.
2	2OUT	output	Open-collector output of comparator 2. Requires an external pull-up resistor to a positive supply.
3	VCC	power_in	Positive supply voltage. Single-supply operation: 2 V to 36 V. Split-supply operation: ±1 V to ±18 V.
4	2IN-	input	Inverting input of comparator 2. Common-mode input voltage range includes ground.
5	2IN+	input	Non-inverting input of comparator 2. Common-mode input voltage range includes ground.
6	1IN-	input	Inverting input of comparator 1. Common-mode input voltage range includes ground.
7	1IN+	input	Non-inverting input of comparator 1. Common-mode input voltage range includes ground.
8	3IN-	input	Inverting input of comparator 3. Common-mode input voltage range includes ground.
9	3IN+	input	Non-inverting input of comparator 3. Common-mode input voltage range includes ground.
10	4IN-	input	Inverting input of comparator 4. Common-mode input voltage range includes ground.
11	4IN+	input	Non-inverting input of comparator 4. Common-mode input voltage range includes ground.
12	GND	power_in	Ground / negative supply. Tie to 0 V for single-supply operation or to the negative rail for split-supply operation.
13	4OUT	output	Open-collector output of comparator 4. Requires an external pull-up resistor to a positive supply.
14	3OUT	output	Open-collector output of comparator 3. Requires an external pull-up resistor to a positive supply.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM2901DR
LM2901DRD
LM2901DRPWR
LM2901DRPW
LM2901DRN

CAD (KiCad official)

Symbol: LM2901DR
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm2901dr.step`	195 KB	You want the bare part, or you mark your own boards.
`lm2901dr-etched.step`	2.0 MB	You want the part with `LM2901DR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 514 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: Texas Instruments datasheet (53 pp, sha256 97e6781f0239a05e, 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