74LVC1T45Z6-7 from Diodes Incorporated, in a SOT-563. 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	VCC(A)	power_in	Supply for I/O pin A; also serves as the reference for the DIR control input. Operating range 1.65V to 5.5V.
2	GND	power_in	Ground reference (0 V) for both supply domains.
3	A	bidirectional	Data input/output for the VCC(A) supply domain. Becomes an input when DIR is high (A→B) and an output when DIR is low (B→A). Tracks VCC(A) logic levels; 3-stated when either supply is 0 V.
4	B	bidirectional	Data input/output for the VCC(B) supply domain. Becomes an input when DIR is low (B→A) and an output when DIR is high (A→B). Tracks VCC(B) logic levels; 3-stated when either supply is 0 V.
5	DIR	input	Direction control input referenced to VCC(A). DIR = L routes B data to A output; DIR = H routes A data to B output. Input high threshold is 0.65×VCC(A) to 0.7×VCC(A) depending on supply.
6	VCC(B)	power_in	Supply for I/O pin B; sets the logic level for the B side. Operating range 1.65V to 5.5V, independent of VCC(A).

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-563
Category	Logic
Pins	6

Ordering variants

74LVC1T45Z6-7
74LVC1T45Z6-7W6
74LVC1T45Z6-774LVC1T45W6-7
74LVC1T45Z6-7DW
74LVC1T45Z6-774LVC1T45DW-7
74LVC1T45Z6-7FW4
74LVC1T45Z6-774LVC1T45FW4-7
74LVC1T45Z6-7FZ4
74LVC1T45Z6-774LVC1T45FZ4-7
74LVC1T45Z6-7FX4
74LVC1T45Z6-774LVC1T45FX4-7

CAD (KiCad official)

Symbol: 74LVC1T45Z6-7
Footprint: Package_TO_SOT_SMD:SOT-563
3D model: SOT-563 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`74lvc1t45z6-7.step`	448 KB	You want the bare part, or you mark your own boards.
`74lvc1t45z6-7-etched.step`	1.8 MB	You want the part with `74LVC1T45Z6-7` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 402 faces against 54 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: Diodes Incorporated datasheet (15 pp, sha256 64c576b335fd584e, 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