LM239DR 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 (typ. 3 V to 36 V). Can sink up to ~16 mA.
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 range 2 V to 36 V, or split-supply ±1 V to ±18 V.
4	2IN-	input	Inverting input of comparator 2.
5	2IN+	input	Non-inverting input of comparator 2.
6	1IN-	input	Inverting input of comparator 1.
7	1IN+	input	Non-inverting input of comparator 1.
8	3IN+	input	Non-inverting input of comparator 3.
9	3IN-	input	Inverting input of comparator 3.
10	4IN+	input	Non-inverting input of comparator 4.
11	4IN-	input	Inverting input of comparator 4.
12	GND	power_in	Ground / negative supply. Tied to 0 V in single-supply operation, or to the negative rail in split-supply operation.
13	4OUT	output	Open-collector output of comparator 4. Requires an external pull-up resistor.
14	3OUT	output	Open-collector output of comparator 3. Requires an external pull-up resistor.

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.

LM239DR
LM239DRD
LM239DRN
LM239DRPW
LM239DRPWR

CAD (KiCad official)

Symbol: LM239DR
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
`lm239dr.step`	195 KB	You want the bare part, or you mark your own boards.
`lm239dr-etched.step`	2.0 MB	You want the part with `LM239DR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 495 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