SN74LVC4245ADBR from Texas Instruments, in a SSOP-24-208mil. 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 rail (typically 5 V, up to 5.5 V). Also powers the DIR and OE control circuitry; determines VIH/VIL thresholds of the control inputs.
2	DIR	input	Direction control input, referenced to VCCA. DIR = L transmits B->A; DIR = H transmits A->B (when OE = L).
3	A1	bidirectional	A-port channel 1 data I/O, referenced to VCCA (0 to VCCA). Drives up to +/-24 mA at VCCA = 4.5-5.5 V.
4	A2	bidirectional	A-port channel 2 data I/O, referenced to VCCA.
5	A3	bidirectional	A-port channel 3 data I/O, referenced to VCCA.
6	A4	bidirectional	A-port channel 4 data I/O, referenced to VCCA.
7	A5	bidirectional	A-port channel 5 data I/O, referenced to VCCA.
8	A6	bidirectional	A-port channel 6 data I/O, referenced to VCCA.
9	A7	bidirectional	A-port channel 7 data I/O, referenced to VCCA.
10	A8	bidirectional	A-port channel 8 data I/O, referenced to VCCA.
11	GND	power_in	Device ground reference. Continuous current per GND pin +/-100 mA max; tie all GND pins to the board ground plane.
12	GND	power_in	Device ground reference (second GND pin).
13	GND	power_in	Device ground reference (third GND pin).
14	B8	bidirectional	B-port channel 8 data I/O, referenced to VCCB (2.7-3.6 V).
15	B7	bidirectional	B-port channel 7 data I/O, referenced to VCCB.
16	B6	bidirectional	B-port channel 6 data I/O, referenced to VCCB.
17	B5	bidirectional	B-port channel 5 data I/O, referenced to VCCB.
18	B4	bidirectional	B-port channel 4 data I/O, referenced to VCCB.
19	B3	bidirectional	B-port channel 3 data I/O, referenced to VCCB.
20	B2	bidirectional	B-port channel 2 data I/O, referenced to VCCB.
21	B1	bidirectional	B-port channel 1 data I/O, referenced to VCCB.
22	OE	input	Active-low output enable, referenced to VCCA. OE = L enables the transceivers per the DIR setting; OE = H puts both A and B ports in high-impedance (isolation). Tie to VCCA through a pull-up so it ramps with VCCA.
23	VCCB	power_in	B-port supply rail (2.7 V to 3.6 V). Sets the B-port I/O logic level and drive strength (up to +/-24 mA at 3 V, +/-12 mA at 2.7 V).
24	VCCB	power_in	B-port supply rail (second VCCB pin, tie to pin 23).

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SSOP-24-208mil
Category	Logic
Pins	24

Ordering variants

Same part, different packaging or reel option.

SN74LVC4245ADBR
SN74LVC4245ADBRE4
SN74LVC4245ADBRG4
SN74LVC4245ADBRDW
SN74LVC4245ADBRDWE4
SN74LVC4245ADBRDWG4
SN74LVC4245ADBRDWR
SN74LVC4245ADBRDWRE4
SN74LVC4245ADBRDWRG4
SN74LVC4245ADBRPW
SN74LVC4245ADBRPWG4
SN74LVC4245ADBRPWR
SN74LVC4245ADBRPWRE4
SN74LVC4245ADBRPWRG4
SN74LVC4245ADBRPWT
SN74LVC4245ADBRPWTG4

CAD (KiCad official)

Symbol: SN74LVC4245ADBR
Footprint: Package_SO:SSOP-24_5.3x8.2mm_P0.65mm
3D model: SSOP-24-208mil (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sn74lvc4245adbr.step`	315 KB	You want the bare part, or you mark your own boards.
`sn74lvc4245adbr-etched.step`	3.4 MB	You want the part with `SN74LVC4245ADBR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 860 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 (17 pp, sha256 4b1df8bf97da30c0, 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