TMUX7212PWR 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 for channel 1 (S1↔D1). Has an internal 4 MΩ pull-down resistor. On TMUX7212 the channel is closed (ON) when SEL1 = logic high. Logic thresholds: VIL ≤ 0.8 V, VIH ≥ 1.3 V; input can tolerate up to 44 V.
2	D1	bidirectional	Drain pin 1 of analog switch channel 1. Bidirectional signal path terminal (can serve as input or output). Signal range Vs-Vd allowed from VSS to VDD; typical on-resistance 2 Ω at ±15 V dual supply.
3	S1	bidirectional	Source pin 1 of analog switch channel 1. Bidirectional signal path terminal (can serve as input or output). Rail-to-rail operation; supports up to 220 mA (TSSOP) continuous current per channel at +44 V single supply, 25°C.
4	VSS	power_in	Negative power supply (most-negative power-supply potential). In single-supply operation, tie to GND; in dual-supply operation, VSS can go as low as −22 V (nominal) up to a maximum absolute rating of −48 V. Decouple with 0.1 µF to 10 µF between VSS and GND for reliable operation.
5	GND	power_in	Ground (0 V) reference for the device.
6	S4	bidirectional	Source pin 4 of analog switch channel 4. Bidirectional signal path terminal (can serve as input or output).
7	D4	bidirectional	Drain pin 4 of analog switch channel 4. Bidirectional signal path terminal (can serve as input or output).
8	SEL4	input	Logic control input 4 for channel 4 (S4↔D4). Has an internal 4 MΩ pull-down resistor. On TMUX7212 the channel is closed (ON) when SEL4 = logic high.
9	SEL3	input	Logic control input 3 for channel 3 (S3↔D3). Has an internal 4 MΩ pull-down resistor. On TMUX7212 the channel is closed (ON) when SEL3 = logic high.
10	D3	bidirectional	Drain pin 3 of analog switch channel 3. Bidirectional signal path terminal (can serve as input or output).
11	S3	bidirectional	Source pin 3 of analog switch channel 3. Bidirectional signal path terminal (can serve as input or output).
12	NC	unconnected	No internal connection. Can be shorted to GND or left floating.
13	VDD	power_in	Positive power supply (most-positive power-supply potential). Range 4.5 V to 44 V single-supply or up to +22 V in dual-supply operation (48 V absolute max). Decouple with 0.1 µF to 10 µF between VDD and GND for reliable operation.
14	S2	bidirectional	Source pin 2 of analog switch channel 2. Bidirectional signal path terminal (can serve as input or output).
15	D2	bidirectional	Drain pin 2 of analog switch channel 2. Bidirectional signal path terminal (can serve as input or output).
16	SEL2	input	Logic control input 2 for channel 2 (S2↔D2). Has an internal 4 MΩ pull-down resistor. On TMUX7212 the channel is closed (ON) when SEL2 = logic high.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TMUX7212PWR
TMUX7212PWRRUMR
TMUX7212PWRRUM

CAD (KiCad official)

Symbol: TMUX7212PWR
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (52 pp, sha256 adfc1737e625f1de, 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