RS2260XTSS16 from Jiangsu RUNIC Tech, in a TSSOP-16. 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	Y4	bidirectional	Analog switch input/output channel Y4. Bidirectional analog signal path; connects to COM when selected by address A/B/C = 100 and INH = 0.
2	Y6	bidirectional	Analog switch input/output channel Y6. Bidirectional analog signal path; connects to COM when selected by address A/B/C = 110 and INH = 0.
3	COM	bidirectional	Common analog switch terminal. Connects to one of Y0-Y7 (or none if INH = 1) as selected by digital address inputs A/B/C. Signals pass equally in either direction.
4	Y7	bidirectional	Analog switch input/output channel Y7. Bidirectional analog signal path; connects to COM when address A/B/C = 111 and INH = 0.
5	Y5	bidirectional	Analog switch input/output channel Y5. Bidirectional analog signal path; connects to COM when address A/B/C = 101 and INH = 0.
6	INH	input	Digital enable input (active-low enable / active-high inhibit). When INH = 1 all channels are OFF. Normally connected to GND. VIH/VIL scale with Vcc (e.g., VIH = 2.4 V min at Vcc = 3.3 V).
7	NC	unconnected	No connect. Leave floating or tie to Vcc/GND per section 8.3 note (unused control inputs should be held at Vcc or GND).
8	GND	power_in	Ground reference. Connect to digital ground of the system.
9	C	input	Digital address input C (MSB of channel select). Combined with B and A selects one of Y0-Y7 when INH = 0. CMOS-level input; hold at Vcc or GND if unused.
10	B	input	Digital address input B (middle bit of channel select). CMOS-level input; VIH/VIL scale with Vcc per section 8.3.
11	A	input	Digital address input A (LSB of channel select). CMOS-level input; VIH/VIL scale with Vcc per section 8.3.
12	Y3	bidirectional	Analog switch input/output channel Y3. Bidirectional analog signal path; connects to COM when address A/B/C = 011 and INH = 0.
13	Y0	bidirectional	Analog switch input/output channel Y0. Bidirectional analog signal path; connects to COM when address A/B/C = 000 and INH = 0.
14	Y1	bidirectional	Analog switch input/output channel Y1. Bidirectional analog signal path; connects to COM when address A/B/C = 001 and INH = 0.
15	Y2	bidirectional	Analog switch input/output channel Y2. Bidirectional analog signal path; connects to COM when address A/B/C = 010 and INH = 0.
16	VCC	power_in	Positive analog and digital supply voltage input. Recommended operating range 2 V to 6 V (absolute max 7 V). Decouple to GND close to the pin.

Key specifications

Parameter	Value
Manufacturer	Jiangsu RUNIC Tech
Package	TSSOP-16
Category	Comm/UART
Pins	16

Ordering variants

Same part, different packaging or reel option.

RS2260XTSS16
RS2260XTSS16XTQW16

CAD (KiCad official)

Symbol: RS2260XTSS16
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`rs2260xtss16.step`	205 KB	You want the bare part, or you mark your own boards.
`rs2260xtss16-etched.step`	3.2 MB	You want the part with `RS2260XTSS16` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 774 faces against 255 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 (21 pp, sha256 93fafa4986fbc1b4, 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