COS2177SR from COSINE, 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	OUT1	output	Output of amplifier A (channel 1). Output voltage range extends to within millivolts of each supply rail. Output current ±10mA typical, ±28mA short-circuit.
2	-IN1	input	Inverting input of amplifier A (channel 1). Voltage range from -Vs to +Vs; input terminals are diode-clamped to the supply rails.
3	+IN1	input	Non-inverting input of amplifier A (channel 1). Same voltage range as -IN1 (-Vs to +Vs).
4	-Vs	power_in	Negative power supply or ground. Total supply (+Vs to -Vs) range ±2.25V to ±18V (36V max). Bypass with 0.1µF ceramic capacitor close to the pin.
5	+IN2	input	Non-inverting input of amplifier B (channel 2). Voltage range from -Vs to +Vs.
6	-IN2	input	Inverting input of amplifier B (channel 2). Voltage range from -Vs to +Vs; input terminals are diode-clamped to the supply rails.
7	OUT2	output	Output of amplifier B (channel 2). Output voltage range extends to within millivolts of each supply rail. Output current ±10mA typical, ±28mA short-circuit.
8	+Vs	power_in	Positive power supply. Total supply (+Vs to -Vs) range ±2.25V to ±18V (36V max). Bypass with a 0.1µF ceramic capacitor close to the pin; a 2.2µF tantalum can be added for better performance.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

COS2177SR
COS2177SR/UA
COS2177SRMR/U
COS2177SRMR/UA

CAD (KiCad official)

Symbol: COS2177SR
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
`cos2177sr.step`	122 KB	You want the bare part, or you mark your own boards.
`cos2177sr-etched.step`	2.0 MB	You want the part with `COS2177SR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 478 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: COSINE datasheet (9 pp, sha256 081dec7544ce6bdd, 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