GS8632-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	OUTA	output	Amplifier A output. Rail-to-rail output swing; can source/sink typically 53mA (min 35mA over full temp range). Closed-loop output impedance ~3 ohm at 200kHz, G=1.
2	INA-	input	Amplifier A inverting input. Rail-to-rail input; allowable analog input range Vss-0.5V to Vdd+0.5V (absolute max). Input bias current typ 1pA.
3	INA+	input	Amplifier A non-inverting input. Rail-to-rail input; common-mode range includes ground (-0.1V to Vdd+0.1V typ at Vs=5.5V). Input bias current typ 1pA.
4	VSS	power_in	Negative supply / ground. Single-supply operation: connect to 0V (GND) with VDD at +2.1V to +5.5V. Absolute max VDD-VSS = 7.5V.
5	INB+	input	Amplifier B non-inverting input. Rail-to-rail input with the same characteristics as amplifier A's non-inverting input.
6	INB-	input	Amplifier B inverting input. Rail-to-rail input with the same characteristics as amplifier A's inverting input.
7	OUTB	output	Amplifier B output. Rail-to-rail output with the same drive characteristics as OUTA.
8	VDD	power_in	Positive supply. Operating range +2.1V to +5.5V (absolute max +7.5V referred to VSS). PSRR typ 91dB at Vs=2.5V to 5.5V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

GS8632-SR
GS8632-SRMR

CAD (KiCad official)

Symbol: GS8632-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
`gs8632-sr.step`	122 KB	You want the bare part, or you mark your own boards.
`gs8632-sr-etched.step`	2.5 MB	You want the part with `GS8632-SR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 586 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 (19 pp, sha256 c17e6fe6cae0310b, 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