TXB0102DCUT 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. Referenced to VCCB (1.65 V to 5.5 V). Auto-sensing bidirectional data pin on the B (high-voltage) side.
2	GND	power_in	Ground reference for the device.
3	VCCA	power_in	A-port supply voltage. 1.2 V ≤ VCCA ≤ 3.6 V, and VCCA ≤ VCCB. Sets the A-side logic reference.
4	A2	bidirectional	Input/output A2. Referenced to VCCA. Auto-sensing bidirectional data pin on the A (low-voltage) side.
5	A1	bidirectional	Input/output A1. Referenced to VCCA. Auto-sensing bidirectional data pin on the A (low-voltage) side.
6	OE	input	3-state output-mode enable. Pull OE low to place all outputs in high-impedance (3-state) mode. Referenced to VCCA. Must be tied to GND through a pulldown resistor to ensure Hi-Z during power up/down.
7	VCCB	power_in	B-port supply voltage. 1.65 V ≤ VCCB ≤ 5.5 V. Must be greater than or equal to VCCA. Sets the B-side logic reference.
8	B1	bidirectional	Input/output B1. Referenced to VCCB (1.65 V to 5.5 V). Auto-sensing bidirectional data pin on the B (high-voltage) side.

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.

TXB0102DCUT
TXB0102DCUTDCUR
TXB0102DCUTDCTR
TXB0102DCUTDCTT
TXB0102DCUTYZPR

CAD (KiCad official)

Symbol: TXB0102DCUT
Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
3D model: VSSOP-8-0.5mm (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (38 pp, sha256 611f65de89782c16, 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