RS8752XK from Jiangsu RUNIC Tech, in a SOIC-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	OUT A	output	Op-amp A output. Rail-to-rail output stage, source ~85mA / sink ~125mA into RL=1kohm. Output swing from rail ~23mV at RL=1kohm.
2	-IN A	input	Op-amp A inverting input. CMOS input, typical Vos 1.5mV, IB ~1pA. Input range -0.2V to 3.9V with Vs=5V; inputs are diode-clamped to the rails and should be current-limited to <=10mA if driven >0.5V beyond the rails.
3	+IN A	input	Op-amp A non-inverting input. CMOS input, typical Vos 1.5mV, IB ~1pA. Common-mode range -0.2V to 3.9V with Vs=5V; CMRR typically 85dB.
4	V-	power_in	Negative supply rail (or ground for single-supply operation). Total supply V+ to V- from 2.5V to 5.5V (absolute max 7.0V). Shared by both amplifiers.
5	+IN B	input	Op-amp B non-inverting input. CMOS input, typical Vos 1.5mV, IB ~1pA. Common-mode range -0.2V to 3.9V with Vs=5V.
6	-IN B	input	Op-amp B inverting input. CMOS input, typical Vos 1.5mV, IB ~1pA. Diode-clamped to the supply rails.
7	OUT B	output	Op-amp B output. Rail-to-rail output, source ~85mA / sink ~125mA into RL=1kohm. Slew rate 180V/us, 250MHz gain-bandwidth product.
8	V+	power_in	Positive supply rail. Operating range 2.5V to 5.5V (absolute max 7.0V V+ to V-). Quiescent current ~2.9mA per amplifier typ; PSRR ~90dB. Bypass with a local 100nF ceramic to V-.

Key specifications

Parameter	Value
Manufacturer	Jiangsu RUNIC Tech
Package	SOIC-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

RS8752XK
RS8752XKXM
RS8752XKXT
RS8752XKXQ

CAD (KiCad official)

Symbol: RS8752XK
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`rs8752xk.step`	122 KB	You want the bare part, or you mark your own boards.
`rs8752xk-etched.step`	1.9 MB	You want the part with `RS8752XK` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 472 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: Jiangsu RUNIC Tech datasheet (14 pp, sha256 172c25f6fd9af546, 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