LM258ADT from STMicroelectronics, in a SO-8. 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. Can swing from 0 V up to (Vcc+ - 1.5 V); short-circuit protected with typical short-circuit output current ~40 mA when Vcc > 15 V.
2	In1-	input	Inverting input of op-amp channel 1. Input bias current typically 20 nA; input voltage range -0.3 V to 32 V; differential input voltage rating ±32 V.
3	In1+	input	Non-inverting input of op-amp channel 1. Common-mode voltage range includes the negative rail (Vcc-/GND) up to Vcc+ - 1.5 V.
4	Vcc-	power_in	Negative supply / ground pin. In single-supply operation tie to GND; in dual-supply operation connect to the negative rail. Total supply span (Vcc+ to Vcc-) up to 32 V (or ±16 V).
5	In2+	input	Non-inverting input of op-amp channel 2. Common-mode voltage range includes the negative rail (Vcc-/GND) up to Vcc+ - 1.5 V.
6	In2-	input	Inverting input of op-amp channel 2. Input bias current typically 20 nA; input offset voltage typically 2 mV.
7	Out2	output	Output of op-amp channel 2. Rail-to-rail-lower output swing (0 V to Vcc+ - 1.5 V); short-circuit protected.
8	Vcc+	power_in	Positive supply pin. Operates from 3 V up to 32 V single-supply (or ±16 V dual-supply). Very low quiescent current per channel, essentially independent of supply voltage.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	SO-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

LM258ADT
LM258AYDT
LM258DT
LM258ADTLM358ADT
LM258ADTLM358YDT
LM258ADTLM358DT
LM258AST
LM258ADTLM358ST
LM258ADTLM358AST
LM258ADTLM158QT
LM258QT
LM258ADTLM358QT
LM258APT
LM258ADTLM358PT
LM258ADTLM358APT

CAD (KiCad official)

Symbol: LM258ADT
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SO-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm258adt.step`	122 KB	You want the bare part, or you mark your own boards.
`lm258adt-etched.step`	1.6 MB	You want the part with `LM258ADT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 413 faces against 147 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 (25 pp, sha256 40a2550bed90848d, 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