TXB0102DCUR from Texas Instruments, in a VSSOP-8-0.5mm. 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	B2	bidirectional	Input/output B2 on the B port. Referenced to VCCB (1.65 V to 5.5 V). Auto direction sensing; place OE low to force high-impedance.
2	GND	power_in	Device ground reference.
3	VCCA	power_in	A-port supply voltage. 1.2 V ≤ VCCA ≤ 3.6 V and VCCA ≤ VCCB. Should not exceed VCCB.
4	A2	bidirectional	Input/output A2 on the A port. Referenced to VCCA (1.2 V to 3.6 V). Auto direction sensing; place OE low to force high-impedance.
5	A1	bidirectional	Input/output A1 on the A port. Referenced to VCCA (1.2 V to 3.6 V). Auto direction sensing; place OE low to force high-impedance.
6	OE	input	3-state output-mode enable. Pull OE low to place all outputs in high-impedance mode. Referenced to VCCA. Should be tied to GND through a pulldown resistor during power up/down to guarantee Hi-Z.
7	VCCB	power_in	B-port supply voltage. 1.65 V ≤ VCCB ≤ 5.5 V. Must be greater than or equal to VCCA.
8	B1	bidirectional	Input/output B1 on the B port. Referenced to VCCB (1.65 V to 5.5 V). Auto direction sensing; place OE low to force high-impedance.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	VSSOP-8-0.5mm
Category	Logic
Pins	8

Ordering variants

Same part, different packaging or reel option.

TXB0102DCUR
TXB0102DCURDCUT
TXB0102DCURDCTR
TXB0102DCURDCT
TXB0102DCURYZPR

CAD (KiCad official)

Symbol: TXB0102DCUR
Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
3D model: VSSOP-8-0.5mm (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`txb0102dcur.step`	122 KB	You want the bare part, or you mark your own boards.
`txb0102dcur-etched.step`	2.4 MB	You want the part with `TXB0102DCUR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 580 faces against 147 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 (26 pp, sha256 9d5c65ba0cbe66b5, 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