GS358-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; typically <5mV from either rail with RL >100kΩ, 30mV with 10kΩ. Sources/sinks up to ~60mA short-circuit current.
2	INA-	input	Amplifier A inverting input. Rail-to-rail common-mode range extending 100mV beyond the supplies (VSS-0.1V to VDD+0.1V). Input bias current 1pA typ.
3	INA+	input	Amplifier A non-inverting input. Rail-to-rail common-mode range (VSS-0.1V to VDD+0.1V). Input bias current 1pA typ.
4	VSS	power_in	Negative supply / ground. Single-supply operation: connect to GND with VDD at 2.1V-5.5V. Dual-supply: ±1.05V to ±2.75V. Bypass with 0.1µF ceramic to ground if dual-supply.
5	INB+	input	Amplifier B non-inverting input. Rail-to-rail common-mode range (VSS-0.1V to VDD+0.1V). Input bias current 1pA typ.
6	INB-	input	Amplifier B inverting input. Rail-to-rail common-mode range (VSS-0.1V to VDD+0.1V). Input bias current 1pA typ.
7	OUTB	output	Amplifier B output. Rail-to-rail output swing; typically <5mV from either rail with RL >100kΩ, 30mV with 10kΩ. Sources/sinks up to ~60mA short-circuit current.
8	VDD	power_in	Positive supply, 2.1V to 5.5V single-supply (or +1.05V to +2.75V dual-supply). Bypass with a 0.1µF ceramic capacitor close to this pin. Absolute max VDD-VSS = 7.5V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

GS358-SR
GS358-SRMR
GS358-SRDR
GS358-SRFR

CAD (KiCad official)

Symbol: GS358-SR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Gainsil datasheet (16 pp, sha256 3270b91a8ee80e05, 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