GS4580-SR from Gainsil, in a SOP-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	OUTPUT1	output	Amplifier A output. Push-pull output stage with typical 45 mA source / 80 mA sink capability driving loads >= 2 kOhm.
2	INPUT1-	input	Amplifier A inverting input. Typical input bias current 150 nA, input offset current 5 nA, differential input voltage max +/-30 V.
3	INPUT1+	input	Amplifier A non-inverting input. Common-mode range typ +/-13.5 V on +/-15 V supplies; input voltage max +/-15 V.
4	VEE	power_in	Negative supply rail. Accepts down to -18 V (dual supply) or GND for single-supply operation up to +36 V total.
5	INPUT2+	input	Amplifier B non-inverting input. Common-mode range typ +/-13.5 V on +/-15 V supplies; input voltage max +/-15 V.
6	INPUT2-	input	Amplifier B inverting input. Typical input bias current 150 nA, input offset current 5 nA, differential input voltage max +/-30 V.
7	OUTPUT2	output	Amplifier B output. Push-pull output stage with typical 45 mA source / 80 mA sink capability driving loads >= 2 kOhm.
8	VCC	power_in	Positive supply rail. Accepts up to +20 V absolute max; recommended supply +/-2 V to +/-18 V dual or up to 36 V single. Typical quiescent current 4 mA (no load).

Key specifications

Parameter	Value
Manufacturer	Gainsil
Package	SOP-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

GS4580-SR
GS4580-SRTR
GS4580-SRDR

CAD (KiCad official)

Symbol: GS4580-SR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`gs4580-sr.step`	122 KB	You want the bare part, or you mark your own boards.
`gs4580-sr-etched.step`	2.3 MB	You want the part with `GS4580-SR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 560 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: Gainsil datasheet (10 pp, sha256 c3128ca1ac5a204c, retrieved 2026-08-17, tier: lcsc)
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