LM2901DT from STMicroelectronics, 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 an external pull-up resistor to the desired logic supply. Sinks up to 16 mA (typ).
2	OUT1	output	Open-collector output of comparator 1. Requires an external pull-up resistor. Sinks up to 16 mA (typ).
3	VCC+	power_in	Positive supply voltage. Single supply 3 V to 36 V, or dual supply ±1.5 V to ±18 V.
4	IN1-	input	Inverting input of comparator 1. Input common-mode range includes ground (VCC-).
5	IN1+	input	Non-inverting input of comparator 1. Input common-mode range includes ground (VCC-).
6	IN2-	input	Inverting input of comparator 2. Input common-mode range includes ground (VCC-).
7	IN2+	input	Non-inverting input of comparator 2. Input common-mode range includes ground (VCC-).
8	IN3+	input	Non-inverting input of comparator 3. Input common-mode range includes ground (VCC-).
9	IN3-	input	Inverting input of comparator 3. Input common-mode range includes ground (VCC-).
10	IN4+	input	Non-inverting input of comparator 4. Input common-mode range includes ground (VCC-).
11	IN4-	input	Inverting input of comparator 4. Input common-mode range includes ground (VCC-).
12	VCC-	power_in	Negative supply / ground. Connect to GND for single-supply operation or to the negative rail for dual-supply operation.
13	OUT4	output	Open-collector output of comparator 4. Requires an external pull-up resistor. Sinks up to 16 mA (typ).
14	OUT3	output	Open-collector output of comparator 3. Requires an external pull-up resistor. Sinks up to 16 mA (typ).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM2901DT
LM2901DTPT
LM2901DTN

CAD (KiCad official)

Symbol: LM2901DT
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
`lm2901dt.step`	195 KB	You want the bare part, or you mark your own boards.
`lm2901dt-etched.step`	1.9 MB	You want the part with `LM2901DT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 483 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: STMicroelectronics datasheet (17 pp, sha256 43565e6eb9a8b5be, 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