LM158DT 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. Push-pull output capable of sinking/sourcing; output swing 0 V to (Vcc+ − 1.5 V). Output short-circuit current approximately 40 mA independent of Vcc magnitude.
2	In1-	input	Inverting input of op-amp channel 1. High-impedance BJT input; typical input bias current 20 nA, input offset voltage 2 mV. Absolute input voltage range −0.3 V to 32 V; differential input voltage up to ±32 V.
3	In1+	input	Non-inverting input of op-amp channel 1. Common-mode input voltage range includes the negative rail (0 V / Vcc−), enabling single-supply operation with ground-referenced signals.
4	Vcc-	power_in	Negative supply / ground pin, shared by both op-amp channels. Tie to GND in single-supply operation, or to the negative rail in split-supply operation. Total supply voltage 3 V to 32 V (single) or ±1.5 V to ±16 V (split).
5	In2+	input	Non-inverting input of op-amp channel 2. Common-mode input voltage range includes the negative rail, matching channel 1.
6	In2-	input	Inverting input of op-amp channel 2. High-impedance BJT input with characteristics matching channel 1 (typ. 20 nA bias, 2 mV offset).
7	Out2	output	Output of op-amp channel 2. Same drive characteristics as Out1; short-circuit protected.
8	Vcc+	power_in	Positive supply pin, shared by both op-amp channels. Absolute maximum ±16 V (split) or 32 V (single-supply); recommended operating up to 30 V. Supply current is very low and largely 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.

LM158DT
LM158DTADT
LM158DTAYDT
LM158DTYDT
LM158DTST
LM158DTAST
LM158DTQT
LM158DTPT
LM158DTAPT

CAD (KiCad official)

Symbol: LM158DT
Footprint: Package_SO:TI_SO-PowerPAD-8
3D model: SO-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm158dt.step`	123 KB	You want the bare part, or you mark your own boards.
`lm158dt-etched.step`	1.4 MB	You want the part with `LM158DT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 367 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