TXS0108EPWR from Texas Instruments, in a TSSOP-20. 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	A1	bidirectional	Input/output 1. Referenced to VCCA (1.4V-3.6V). Auto-sensing bidirectional level-shifted channel paired with B1.
2	VCCA	power_in	A-port supply voltage. 1.4V ≤ VCCA ≤ 3.6V and VCCA ≤ VCCB. Sets the logic level of the A-port I/Os.
3	A2	bidirectional	Input/output 2. Referenced to VCCA. Auto-sensing bidirectional level-shifted channel paired with B2.
4	A3	bidirectional	Input/output 3. Referenced to VCCA. Auto-sensing bidirectional level-shifted channel paired with B3.
5	A4	bidirectional	Input/output 4. Referenced to VCCA. Auto-sensing bidirectional level-shifted channel paired with B4.
6	A5	bidirectional	Input/output 5. Referenced to VCCA. Auto-sensing bidirectional level-shifted channel paired with B5.
7	A6	bidirectional	Input/output 6. Referenced to VCCA. Auto-sensing bidirectional level-shifted channel paired with B6.
8	A7	bidirectional	Input/output 7. Referenced to VCCA. Auto-sensing bidirectional level-shifted channel paired with B7.
9	A8	bidirectional	Input/output 8. Referenced to VCCA. Auto-sensing bidirectional level-shifted channel paired with B8.
10	OE	input	Tri-state output-mode enable. Pull OE low to place all A/B outputs into 3-state (Hi-Z) mode. Referenced to VCCA. Tie to GND through a pull-down during power sequencing to hold outputs in Hi-Z.
11	GND	power_in	Ground reference for the device.
12	B8	bidirectional	Input/output 8. Referenced to VCCB. Auto-sensing bidirectional level-shifted channel paired with A8.
13	B7	bidirectional	Input/output 7. Referenced to VCCB. Auto-sensing bidirectional level-shifted channel paired with A7.
14	B6	bidirectional	Input/output 6. Referenced to VCCB. Auto-sensing bidirectional level-shifted channel paired with A6.
15	B5	bidirectional	Input/output 5. Referenced to VCCB. Auto-sensing bidirectional level-shifted channel paired with A5.
16	B4	bidirectional	Input/output 4. Referenced to VCCB. Auto-sensing bidirectional level-shifted channel paired with A4.
17	B3	bidirectional	Input/output 3. Referenced to VCCB. Auto-sensing bidirectional level-shifted channel paired with A3.
18	B2	bidirectional	Input/output 2. Referenced to VCCB. Auto-sensing bidirectional level-shifted channel paired with A2.
19	VCCB	power_in	B-port supply voltage. 1.65V ≤ VCCB ≤ 5.5V and must be ≥ VCCA. Sets the logic level of the B-port I/Os.
20	B1	bidirectional	Input/output 1. Referenced to VCCB. Auto-sensing bidirectional level-shifted channel paired with A1.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TXS0108EPWR
TXS0108EPWRDGS
TXS0108EPWRRGY
TXS0108EPWRRKS
TXS0108EPWRZXY
TXS0108EPWRNME

CAD (KiCad official)

Symbol: TXS0108EPWR
Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
3D model: TSSOP-20 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (42 pp, sha256 a6ddbe03088d291d, 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