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SN74LVC2T45DCUR

Public Made by Adom

by adom

Texas Instruments Buffer/Driver/Transceiver, VSSOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
Name Last commit message Last updated
docs sn74lvc2t45dcur: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json sn74lvc2t45dcur: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC… · Ray
README.md sn74lvc2t45dcur: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray
sn74lvc2t45dcur-etched.fit.json sn74lvc2t45dcur: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
sn74lvc2t45dcur-etched.glb sn74lvc2t45dcur: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC… · Ray
sn74lvc2t45dcur-etched.step sn74lvc2t45dcur: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC… · Ray
sn74lvc2t45dcur.glb Publish 0.1.0 · Ray
sn74lvc2t45dcur.kicad_mod Publish 0.1.0 · Ray
sn74lvc2t45dcur.kicad_sym Publish 0.1.0 · Ray
sn74lvc2t45dcur.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
sn74lvc2t45dcur.step Publish 0.1.0 · Ray

SN74LVC2T45DCUR

Texas Instruments · Buffer/Driver/Transceiver · VSSOP-8

SN74LVC2T45DCUR from Texas Instruments, in a VSSOP-8. 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. Accepts 1.65 V to 5.5 V and sets the A-side logic level as well as the DIR input reference. Must be powered up before or with VCCB.
2 A1 bidirectional Bit-1 data I/O on the A port, referenced to VCCA (1.65-5.5 V). Acts as input when DIR = H (A->B) and as 3-state output when DIR = L (B->A). Input circuit is always active and must be held at a valid level.
3 A2 bidirectional Bit-2 data I/O on the A port, referenced to VCCA (1.65-5.5 V). Acts as input when DIR = H (A->B) and as 3-state output when DIR = L (B->A). Input circuit is always active and must be held at a valid level.
4 GND power_in Device ground. Must be connected before any supply rail is applied per the power-up sequence.
5 DIR input Direction-control input, referenced to VCCA. DIR = H transmits A -> B (B outputs enabled); DIR = L transmits B -> A (A outputs enabled). Input circuit is always active and must not float.
6 B2 bidirectional Bit-2 data I/O on the B port, referenced to VCCB (1.65-5.5 V). Acts as output when DIR = H and as 3-state input when DIR = L. 3-state; both ports go high-impedance if either VCC is at GND.
7 B1 bidirectional Bit-1 data I/O on the B port, referenced to VCCB (1.65-5.5 V). Acts as output when DIR = H and as 3-state input when DIR = L. 3-state; both ports go high-impedance if either VCC is at GND.
8 VCCB power_in B-port supply rail. Accepts 1.65 V to 5.5 V and sets the B-side logic level. May be ramped up along with or after VCCA.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VSSOP-8
Category Logic
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • SN74LVC2T45DCUR
  • SN74LVC2T45DCURDCUT
  • SN74LVC2T45DCURDCTR
  • SN74LVC2T45DCURDCTT
  • SN74LVC2T45DCURYZPR

CAD (KiCad official)

  • Symbol: SN74LVC2T45DCUR
  • Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
  • 3D model: VSSOP-8 (KiCad packages3D, STEP)
  • 3D model files: sn74lvc2t45dcur-etched.step / sn74lvc2t45dcur-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74lvc2t45dcur.step / sn74lvc2t45dcur.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sn74lvc2t45dcur.step 122 KB You want the bare part, or you mark your own boards.
sn74lvc2t45dcur-etched.step 2.6 MB You want the part with SN74LVC2T45DCUR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 644 faces against 147 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 (26 pp, sha256 8d9730a9217e2efc, 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