LM224PT from STMicroelectronics, in a TSSOP-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; typical short-circuit output current ~40 mA independent of VCC. Output swings from VCC- (ground in single-supply operation) to within ~1.5 V of VCC+.
2	IN1-	input	Inverting input of op-amp channel 1. Typical input bias current 20 nA, input offset current 2 nA, offset voltage 5 mV max. Differential input voltage rating ±32 V.
3	IN1+	input	Non-inverting input of op-amp channel 1. Common-mode input range includes ground: 0 V to VCC-1.5 V at 25 °C (0 V to VCC-2 V over temperature).
4	VCC+	power_in	Positive supply rail. Single-supply operation: 3 V to 30 V referenced to VCC- = GND. Split-supply operation: +1.5 V to +15 V. Absolute maximum 32 V (or ±16 V split).
5	IN2+	input	Non-inverting input of op-amp channel 2. Same electrical characteristics as IN1+.
6	IN2-	input	Inverting input of op-amp channel 2. Same electrical characteristics as IN1-.
7	OUT2	output	Output of op-amp channel 2. Same electrical characteristics as OUT1.
8	OUT3	output	Output of op-amp channel 3. Same electrical characteristics as OUT1.
9	IN3-	input	Inverting input of op-amp channel 3. Same electrical characteristics as IN1-.
10	IN3+	input	Non-inverting input of op-amp channel 3. Same electrical characteristics as IN1+.
11	VCC-	power_in	Negative supply rail / ground. Tied to GND for single-supply operation, or to a negative rail (-1.5 V to -15 V) for split-supply operation.
12	IN4+	input	Non-inverting input of op-amp channel 4. Same electrical characteristics as IN1+.
13	IN4-	input	Inverting input of op-amp channel 4. Same electrical characteristics as IN1-.
14	OUT4	output	Output of op-amp channel 4. Same electrical characteristics as OUT1.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM224PT
LM224PTAPT
LM224PTWPT
LM224PTDT
LM224PTADT
LM224PTWDT
LM224PTQT

CAD (KiCad official)

Symbol: LM224PT
Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
3D model: TSSOP-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm224pt.step`	194 KB	You want the bare part, or you mark your own boards.
`lm224pt-etched.step`	1.6 MB	You want the part with `LM224PT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 430 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 (22 pp, sha256 c1aa97669d6ca9c8, 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