COS8552MR from COSINE, in a MSOP-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. Rail-to-rail output; swing extends to within ~5mV of each supply rail with RL=100kΩ (15mV with RL=10kΩ). Short-circuit sourcing/sinking current is ±7mA.
2	-IN1	input	Inverting input of amplifier A. Input voltage range extends from -Vs -0.3V to +Vs +0.3V (absolute max ±0.5V beyond rails). Input bias current ±100pA typical.
3	+IN1	input	Non-inverting input of amplifier A. Same common-mode voltage range as -IN1 (-Vs to +Vs, rail-to-rail input). Input bias current ±100pA typical.
4	-Vs	power_in	Negative supply or ground pin. In single-supply operation tie to GND; in dual-supply operation connect to negative rail. If not connected to ground, bypass with a 0.1µF capacitor as close to the part as possible. Total supply (+Vs to -Vs) must not exceed 6V.
5	+IN2	input	Non-inverting input of amplifier B. Rail-to-rail input; common-mode range -Vs to +Vs. Input bias current ±100pA typical.
6	-IN2	input	Inverting input of amplifier B. Input voltage range extends from -Vs -0.3V to +Vs +0.3V. Input bias current ±100pA typical.
7	OUT2	output	Output of amplifier B. Rail-to-rail output; swing extends to within ~5mV of each supply rail with RL=100kΩ. Short-circuit sourcing/sinking current is ±7mA.
8	+Vs	power_in	Positive supply pin. Operating range 1.8V to 5.5V (absolute max 6V from -Vs). Quiescent current 55µA per amplifier at Vs=3.0V. Place a 0.1µF bypass capacitor as close to the pin as possible, between +Vs and -Vs (or between +Vs and ground).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

COS8552MRA
COS8552MRB
COS8552MRC
COS8552SRA
COS8552SR
COS8552SRC
COS8552SRD

CAD (KiCad official)

Symbol: COS8552MR
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: COSINE datasheet (12 pp, sha256 845c61f20f164396, 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