LM224ADT 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	OUT1	output	Output of op-amp channel 1. Class-AB output stage; short-circuit current limited to ~40 mA. Do not short to VCC when VCC > 15 V (destructive dissipation possible).
2	IN1-	input	Inverting input of op-amp channel 1. Typical input bias current 20 nA, input offset current 2 nA. Do not drive below -0.3 V (input parasitic NPN action).
3	IN1+	input	Non-inverting input of op-amp channel 1. Common-mode input range includes ground; upper limit is VCC - 1.5 V.
4	VCC+	power_in	Positive supply rail. Single-supply operation 3 V to 30 V, or split-supply +1.5 V to +15 V. Absolute maximum ±16 V (single) or 32 V (single-supply). Total supply current typically 375 μA per amplifier.
5	IN2+	input	Non-inverting input of op-amp channel 2. Common-mode input range includes ground.
6	IN2-	input	Inverting input of op-amp channel 2. Typical input bias current 20 nA.
7	OUT2	output	Output of op-amp channel 2. Class-AB output stage; short-circuit current limited to ~40 mA.
8	OUT3	output	Output of op-amp channel 3. Class-AB output stage; short-circuit current limited to ~40 mA.
9	IN3-	input	Inverting input of op-amp channel 3. Typical input bias current 20 nA.
10	IN3+	input	Non-inverting input of op-amp channel 3. Common-mode input range includes ground.
11	VCC-	power_in	Negative supply rail / ground. Tie to GND for single-supply operation, or to negative rail (down to -15 V) for split-supply operation.
12	IN4+	input	Non-inverting input of op-amp channel 4. Common-mode input range includes ground.
13	IN4-	input	Inverting input of op-amp channel 4. Typical input bias current 20 nA.
14	OUT4	output	Output of op-amp channel 4. Class-AB output stage; short-circuit current limited to ~40 mA.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM224ADT
LM224DT
LM224WDT
LM224ADTLM124DT
LM224APT
LM224PT
LM224WPT
LM224ADTLM324APT
LM224ADTLM324PT
LM224ADTLM324WPT
LM224ADTLM324AWPT
LM224QT
LM224ADTLM324QT

CAD (KiCad official)

Symbol: LM224ADT
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
`lm224adt.step`	195 KB	You want the bare part, or you mark your own boards.
`lm224adt-etched.step`	1.7 MB	You want the part with `LM224ADT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 452 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 (21 pp, sha256 7d935f64f066d5e4, 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