SN74LVC8T245PWR from Texas Instruments, in a TSSOP-24. 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. Accepts 1.65V to 5.5V; sets logic-level reference for the A-port I/Os and for the DIR and OE control inputs.
2	DIR	input	Direction-control input. HIGH transmits A-to-B (B pins drive out), LOW transmits B-to-A (A pins drive out). Input levels referenced to VCCA.
3	A1	bidirectional	Bidirectional data I/O, channel 1, A-side. Referenced to VCCA (1.65V to 5.5V). Direction and enable are set by DIR and OE.
4	A2	bidirectional	Bidirectional data I/O, channel 2, A-side. Referenced to VCCA (1.65V to 5.5V).
5	A3	bidirectional	Bidirectional data I/O, channel 3, A-side. Referenced to VCCA (1.65V to 5.5V).
6	A4	bidirectional	Bidirectional data I/O, channel 4, A-side. Referenced to VCCA (1.65V to 5.5V).
7	A5	bidirectional	Bidirectional data I/O, channel 5, A-side. Referenced to VCCA (1.65V to 5.5V).
8	A6	bidirectional	Bidirectional data I/O, channel 6, A-side. Referenced to VCCA (1.65V to 5.5V).
9	A7	bidirectional	Bidirectional data I/O, channel 7, A-side. Referenced to VCCA (1.65V to 5.5V).
10	A8	bidirectional	Bidirectional data I/O, channel 8, A-side. Referenced to VCCA (1.65V to 5.5V).
11	GND	power_in	Device ground. Tie to system ground plane along with pins 12 and 13.
12	GND	power_in	Device ground. Tie to system ground plane along with pins 11 and 13.
13	GND	power_in	Device ground. Tie to system ground plane along with pins 11 and 12.
14	B8	bidirectional	Bidirectional data I/O, channel 8, B-side. Referenced to VCCB (1.65V to 5.5V).
15	B7	bidirectional	Bidirectional data I/O, channel 7, B-side. Referenced to VCCB (1.65V to 5.5V).
16	B6	bidirectional	Bidirectional data I/O, channel 6, B-side. Referenced to VCCB (1.65V to 5.5V).
17	B5	bidirectional	Bidirectional data I/O, channel 5, B-side. Referenced to VCCB (1.65V to 5.5V).
18	B4	bidirectional	Bidirectional data I/O, channel 4, B-side. Referenced to VCCB (1.65V to 5.5V).
19	B3	bidirectional	Bidirectional data I/O, channel 3, B-side. Referenced to VCCB (1.65V to 5.5V).
20	B2	bidirectional	Bidirectional data I/O, channel 2, B-side. Referenced to VCCB (1.65V to 5.5V).
21	B1	bidirectional	Bidirectional data I/O, channel 1, B-side. Referenced to VCCB (1.65V to 5.5V).
22	OE	input	Active-low 3-state output enable. LOW enables the outputs; HIGH places all A and B outputs into high-impedance mode. Input levels referenced to VCCA.
23	VCCB	power_in	B-port supply voltage. Accepts 1.65V to 5.5V; sets logic-level reference for the B-port I/Os. Tie to same net as pin 24.
24	VCCB	power_in	B-port supply voltage. Accepts 1.65V to 5.5V. Tie to same net as pin 23.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSSOP-24
Category	Logic
Pins	24

Ordering variants

Same part, different packaging or reel option.

SN74LVC8T245PWR
SN74LVC8T245PWRDB
SN74LVC8T245PWRDBR
SN74LVC8T245PWRDBQ
SN74LVC8T245PWRDBQR
SN74LVC8T245PWRDGV
SN74LVC8T245PWRDGVR
SN74LVC8T245PWRRHL
SN74LVC8T245PWRRHLR

CAD (KiCad official)

Symbol: SN74LVC8T245PWR
Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
3D model: TSSOP-24 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sn74lvc8t245pwr.step`	315 KB	You want the bare part, or you mark your own boards.
`sn74lvc8t245pwr-etched.step`	3.4 MB	You want the part with `SN74LVC8T245PWR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 868 faces against 387 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 (39 pp, sha256 a2493b65471e5c87, 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