TMUX6112PWR from Texas Instruments, 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	SEL1	input	Logic control input 1 selecting switch 1. TTL/CMOS-compatible (VIH/VIL referenced to VDD). Logic 1 turns switch 1 on (TMUX6112 is normally open).
2	D1	bidirectional	Drain pin 1 of SPST switch 1. Can be an input or output (analog signal path, rail-to-rail from VSS to VDD).
3	S1	bidirectional	Source pin 1 of SPST switch 1. Can be an input or output (analog signal path, rail-to-rail from VSS to VDD).
4	VSS	power_in	Negative power supply, most-negative supply potential. Can be tied to GND for single-supply operation (10V to 17V VDD). Decouple with 0.1µF to 10µF between VSS and GND.
5	GND	power_in	Ground (0V) reference for digital logic thresholds.
6	S4	bidirectional	Source pin 4 of SPST switch 4. Can be an input or output (analog signal path, rail-to-rail from VSS to VDD).
7	D4	bidirectional	Drain pin 4 of SPST switch 4. Can be an input or output (analog signal path, rail-to-rail from VSS to VDD).
8	SEL4	input	Logic control input 4 selecting switch 4. TTL/CMOS-compatible. Logic 1 turns switch 4 on (normally open).
9	SEL3	input	Logic control input 3 selecting switch 3. TTL/CMOS-compatible. Logic 1 turns switch 3 on (normally open).
10	D3	bidirectional	Drain pin 3 of SPST switch 3. Can be an input or output (analog signal path, rail-to-rail from VSS to VDD).
11	S3	bidirectional	Source pin 3 of SPST switch 3. Can be an input or output (analog signal path, rail-to-rail from VSS to VDD).
12	NC	unconnected	No internal connection. Leave floating or tie to any convenient net.
13	VDD	power_in	Positive power supply, most-positive supply potential. Operating range 10V to 17V (single supply) or ±5V to ±17V (dual supply, VDD-VSS ≤ 34V). Decouple with 0.1µF to 10µF between VDD and GND.
14	S2	bidirectional	Source pin 2 of SPST switch 2. Can be an input or output (analog signal path, rail-to-rail from VSS to VDD).
15	D2	bidirectional	Drain pin 2 of SPST switch 2. Can be an input or output (analog signal path, rail-to-rail from VSS to VDD).
16	SEL2	input	Logic control input 2 selecting switch 2. TTL/CMOS-compatible. Logic 1 turns switch 2 on (normally open).

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSSOP-16
Category	Interface
Pins	16

Ordering variants

Same part, different packaging or reel option.

TMUX6112PWR
TMUX6112PWRRTER
TMUX6112PWRRTE

CAD (KiCad official)

Symbol: TMUX6112PWR
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
`tmux6112pwr.step`	205 KB	You want the bare part, or you mark your own boards.
`tmux6112pwr-etched.step`	2.4 MB	You want the part with `TMUX6112PWR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 609 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: Texas Instruments datasheet (37 pp, sha256 ed9a4ce8b7b85e75, retrieved 2026-08-17, tier: manufacturer)
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