LM224ADR 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	Output of op amp 1. Class-AB output stage capable of sourcing and sinking current; short-circuit protected to VCC-.
2	1IN-	input	Inverting input of op amp 1. High-impedance BJT input with typical input bias current of 20 nA.
3	1IN+	input	Non-inverting input of op amp 1. Common-mode range extends to V- (VCC-), allowing single-supply operation down to ground.
4	VCC+	power_in	Positive (highest) supply rail. Operating range 3 V to 32 V (LM224A); absolute maximum 32 V. Bypass locally with a 100 nF ceramic capacitor to VCC-.
5	2IN+	input	Non-inverting input of op amp 2. Common-mode range extends to V- (VCC-), allowing single-supply operation down to ground.
6	2IN-	input	Inverting input of op amp 2. High-impedance BJT input with typical input bias current of 20 nA.
7	2OUT	output	Output of op amp 2. Class-AB output stage capable of sourcing and sinking current; short-circuit protected to VCC-.
8	3OUT	output	Output of op amp 3. Class-AB output stage capable of sourcing and sinking current; short-circuit protected to VCC-.
9	3IN-	input	Inverting input of op amp 3. High-impedance BJT input with typical input bias current of 20 nA.
10	3IN+	input	Non-inverting input of op amp 3. Common-mode range extends to V- (VCC-), allowing single-supply operation down to ground.
11	VCC-	power_in	Negative (lowest) supply rail or ground for single-supply operation. Tie to system ground in single-supply designs.
12	4IN+	input	Non-inverting input of op amp 4. Common-mode range extends to V- (VCC-), allowing single-supply operation down to ground.
13	4IN-	input	Inverting input of op amp 4. High-impedance BJT input with typical input bias current of 20 nA.
14	4OUT	output	Output of op amp 4. Class-AB output stage capable of sourcing and sinking current; short-circuit protected to VCC-.

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.

LM224ADRD
LM224ADR
LM224ADRPW
LM224ADRPWR
LM224ADRN
LM224ADRNS
LM224ADRNSR
LM224ADRDB
LM224ADRDBR
LM224ADRJ
LM224ADRW
LM224ADRFK
LM224ADRRTE
LM224ADRRTER

CAD (KiCad official)

Symbol: LM224ADR
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
`lm224adr.step`	195 KB	You want the bare part, or you mark your own boards.
`lm224adr-etched.step`	1.9 MB	You want the part with `LM224ADR` 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: Texas Instruments datasheet (65 pp, sha256 a4eda7c3a0236e96, 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