TXU0104PWR 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. Operating range 1.1V ≤ VCCA ≤ 5.5V. Sets the logic reference level for the A-side inputs (A1-A4).
2	A1	input	Input A1, referenced to VCCA. Schmitt-trigger input with an internal pull-down resistor to prevent floating.
3	A2	input	Input A2, referenced to VCCA. Schmitt-trigger input with an internal pull-down resistor.
4	A3	input	Input A3, referenced to VCCA. Schmitt-trigger input with an internal pull-down resistor.
5	A4	input	Input A4, referenced to VCCA. Schmitt-trigger input with an internal pull-down resistor.
6	NC	unconnected	No internal connection. May be left floating.
7	GND	power_in	Device ground reference.
8	OE	input	Output Enable (active-high on TXU0104). Pull to GND to place all B outputs in high-impedance mode; pull to VCCA or VCCB to enable outputs. Referenced to VCC(MIN).
9	NC	unconnected	No internal connection. May be left floating.
10	B4Y	tri_state	Output B4, referenced to VCCB. Push-pull 3-state output; drive up to 12 mA at 5V. High-Z when OE is inactive.
11	B3Y	tri_state	Output B3, referenced to VCCB. Push-pull 3-state output; high-Z when OE is inactive.
12	B2Y	tri_state	Output B2, referenced to VCCB. Push-pull 3-state output; high-Z when OE is inactive.
13	B1Y	tri_state	Output B1, referenced to VCCB. Push-pull 3-state output; high-Z when OE is inactive.
14	VCCB	power_in	B-port supply voltage. Operating range 1.1V ≤ VCCB ≤ 5.5V. Sets the logic level for the B-side outputs (B1Y-B4Y).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TXU0104PWR
TXU0104PWRBQA
TXU0104PWRRUT
TXU0104PWRRUTR
TXU0104PWRDTR

CAD (KiCad official)

Symbol: TXU0104PWR
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
`txu0104pwr.step`	194 KB	You want the bare part, or you mark your own boards.
`txu0104pwr-etched.step`	2.3 MB	You want the part with `TXU0104PWR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 584 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 (46 pp, sha256 91679293075d8894, 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