TXS0104EPWR from Texas Instruments, 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	VCCA	power_in	A-port supply voltage. 1.65 V <= VCCA <= 3.6 V and VCCA <= VCCB. Also biases the OE input threshold. Decouple with a 0.1 uF cap close to the pin.
2	A1	bidirectional	Input/output A1. Referenced to VCCA. Bidirectional level-translated I/O paired with B1.
3	A2	bidirectional	Input/output A2. Referenced to VCCA. Bidirectional level-translated I/O paired with B2.
4	A3	bidirectional	Input/output A3. Referenced to VCCA. Bidirectional level-translated I/O paired with B3.
5	A4	bidirectional	Input/output A4. Referenced to VCCA. Bidirectional level-translated I/O paired with B4.
6	NC	unconnected	No internal connection. Leave floating or tie to ground.
7	GND	power_in	Device ground reference for both supply rails.
8	OE	input	3-state output-mode enable, referenced to VCCA. Drive OE low to place all A- and B-port outputs in Hi-Z. For Hi-Z during power up/down, tie OE to GND through a pull-down resistor (value set by the driver's current-sourcing capability).
9	NC	unconnected	No internal connection. Leave floating or tie to ground.
10	B4	bidirectional	Input/output B4. Referenced to VCCB. Bidirectional level-translated I/O paired with A4.
11	B3	bidirectional	Input/output B3. Referenced to VCCB. Bidirectional level-translated I/O paired with A3.
12	B2	bidirectional	Input/output B2. Referenced to VCCB. Bidirectional level-translated I/O paired with A2.
13	B1	bidirectional	Input/output B1. Referenced to VCCB. Bidirectional level-translated I/O paired with B1.
14	VCCB	power_in	B-port supply voltage. 2.3 V <= VCCB <= 5.5 V and VCCB >= VCCA. Decouple with a 0.1 uF cap close to the pin. Either supply (VCCA or VCCB) may be ramped first - no sequencing required.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSSOP-14
Category	Logic
Pins	14

Ordering variants

Same part, different packaging or reel option.

TXS0104EPWR
TXS0104EPWRD
TXS0104EPWRRGY
TXS0104EPWRBQA
TXS0104EPWRZXU
TXS0104EPWRNMN
TXS0104EPWRYZT
TXS0104EPWRRUT

CAD (KiCad official)

Symbol: TXS0104EPWR
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
`txs0104epwr.step`	194 KB	You want the bare part, or you mark your own boards.
`txs0104epwr-etched.step`	2.4 MB	You want the part with `TXS0104EPWR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 623 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: Texas Instruments datasheet (51 pp, sha256 8622dc5ff42a36e2, 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