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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

TMUX1134PWR

Texas Instruments · Analog Switches, Multiplexers · TSSOP-20

TMUX1134PWR from Texas Instruments, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	SEL1	input	Logic select input pin 1; 1.8V logic compatible; controls switch 1 SPDT connection.
2	S1A	bidirectional	Source signal 1A; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
3	D1	bidirectional	Drain signal 1; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
4	S1B	bidirectional	Source signal 1B; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
5	VSS	power_in	Negative power supply rail; -2.75V to 0V operating range; attach 0.1-10µF bypass capacitor to GND.
6	GND	power_in	Ground reference (0V); connect bypass capacitors and circuit common.
7	S2B	bidirectional	Source signal 2B; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
8	D2	bidirectional	Drain signal 2; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
9	S2A	bidirectional	Source signal 2A; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
10	SEL2	input	Logic select input pin 2; 1.8V logic compatible; controls switch 2 SPDT connection.
11	SEL3	input	Logic select input pin 3; 1.8V logic compatible; controls switch 3 SPDT connection.
12	S3A	bidirectional	Source signal 3A; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
13	D3	bidirectional	Drain signal 3; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
14	S3B	bidirectional	Source signal 3B; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
15	N.C.	unconnected	Not connected; leave floating or connect to GND.
16	VDD	power_out	Positive power supply rail; 1.08V to 5.5V single supply (±2.75V dual supply); attach 0.1-10µF bypass capacitor to GND.
17	S4B	bidirectional	Source signal 4B; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
18	D4	bidirectional	Drain signal 4; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
19	S4A	bidirectional	Source signal 4A; bidirectional rail-to-rail (VSS to VDD) with 2Ω typical on-resistance.
20	SEL4	input	Logic select input pin 4; 1.8V logic compatible; controls switch 4 SPDT connection.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSSOP-20
Category	Interface
Pins	20

CAD (KiCad official)

Symbol: TMUX1134PWR
Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
3D model: TSSOP-20 (KiCad packages3D, STEP)
3D model files: tmux1134pwr-etched.step / tmux1134pwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tmux1134pwr.step / tmux1134pwr.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (42 pp, sha256 08082d5484460c92, retrieved 2026-09-24, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF