RS8554XQ from Jiangsu RUNIC Tech, in a TSSOP-14. 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	Output of amplifier channel A. Rail-to-rail output; swings within a few mV of V+/V- with a 100 kΩ load and ~10 mV of the rails with 10 kΩ.
2	-IN A	input	Inverting input of amplifier channel A. Rail-to-rail common-mode range from (V−)−0.1 V to (V+)+0.1 V; input bias current ~50 pA typical.
3	+IN A	input	Non-inverting input of amplifier channel A. Rail-to-rail common-mode range from (V−)−0.1 V to (V+)+0.1 V; input bias current ~50 pA typical.
4	V+	power_in	Positive supply rail. Single-supply +2.7 V to +5.5 V, or ±1.35 V to ±2.75 V dual supply. Absolute maximum V+ to V− is 7.0 V. Bypass locally to V−.
5	+IN B	input	Non-inverting input of amplifier channel B. Rail-to-rail common-mode range from (V−)−0.1 V to (V+)+0.1 V.
6	-IN B	input	Inverting input of amplifier channel B. Rail-to-rail common-mode range from (V−)−0.1 V to (V+)+0.1 V.
7	OUT B	output	Output of amplifier channel B. Rail-to-rail output stage.
8	OUT C	output	Output of amplifier channel C. Rail-to-rail output stage.
9	-IN C	input	Inverting input of amplifier channel C. Rail-to-rail common-mode range from (V−)−0.1 V to (V+)+0.1 V.
10	+IN C	input	Non-inverting input of amplifier channel C. Rail-to-rail common-mode range from (V−)−0.1 V to (V+)+0.1 V.
11	V-	power_in	Negative supply / ground rail. Tie to GND for single-supply operation or to the negative rail for dual supply. Absolute maximum V+ to V− is 7.0 V.
12	+IN D	input	Non-inverting input of amplifier channel D. Rail-to-rail common-mode range from (V−)−0.1 V to (V+)+0.1 V.
13	-IN D	input	Inverting input of amplifier channel D. Rail-to-rail common-mode range from (V−)−0.1 V to (V+)+0.1 V.
14	OUT D	output	Output of amplifier channel D. Rail-to-rail output stage.

Key specifications

Parameter	Value
Manufacturer	Jiangsu RUNIC Tech
Package	TSSOP-14
Category	Op-amp/Cmp
Pins	14

Ordering variants

Same part, different packaging or reel option.

RS8554XQ
RS8554XQXP

CAD (KiCad official)

Symbol: RS8554XQ
Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
3D model: TSSOP-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`rs8554xq.step`	194 KB	You want the bare part, or you mark your own boards.
`rs8554xq-etched.step`	2.4 MB	You want the part with `RS8554XQ` 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 237 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 b3b02c9fa92c42d7, 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