# Texas Instruments SN74LVC2T45DCTR

2-bit dual-supply bus transceiver with configurable voltage translation, SSOP-8 (DCT).

| | |
|---|---|
| Manufacturer | Texas Instruments |
| MPN | SN74LVC2T45DCTR |
| Category | ic (Logic: dual-supply level translator) |
| Package | SSOP-8 (TI DCT), 2.95 x 2.8 mm, 0.65 mm pitch |
| DigiKey | [296-16845-2-ND](https://www.digikey.com/en/products/detail/texas-instruments/SN74LVC2T45DCTR/639457) |
| Mouser | [595-SN74LVC2T45DCTR](https://www.mouser.com/ProductDetail/595-SN74LVC2T45DCTR) |
| LCSC | [C22672](https://www.lcsc.com/product-detail/C22672.html) |
| Datasheet | [sn74lvc2t45.pdf](https://www.ti.com/lit/ds/symlink/sn74lvc2t45.pdf) |

Distributor numbers and stock from the LEDster-TI BOM, checked 2026-11-02: DigiKey 296-16845-2-ND (stock 87954), Mouser 595-SN74LVC2T45DCTR (stock 175251), LCSC C22672 (stock 66294).

## Files

- `sn74lvc2t45dctr.kicad_mod` footprint (KiCad)
- `sn74lvc2t45dctr.kicad_sym` symbol (KiCad)
- `sn74lvc2t45dctr.step` 3D model (STEP, Z-up, seated on z = 0, centred on the footprint origin)
- `sn74lvc2t45dctr.lbr` Fusion / EAGLE library part (adom-lbr from the files above with this page's metadata; no embedded 3D, bind the STEP)

## Provenance

- `sn74lvc2t45dctr.kicad_mod`: KiCad `Package_SO:SSOP-8_2.95x2.8mm_P0.65mm` footprint (https://gitlab.com/kicad/libraries/kicad-footprints/-/raw/master/Package_SO.pretty/SSOP-8_2.95x2.8mm_P0.65mm.kicad_mod), unmodified except the 3D model path (now `sn74lvc2t45dctr.step`). sha256/16 of the original: 8b77f3d670a43e2d.
- `sn74lvc2t45dctr.step`: KiCad `Package_SO.3dshapes/SSOP-8_2.95x2.8mm_P0.65mm.step` (packages3D), byte-identical copy (sha256/16 9b95dcfed5f8335a). The footprint's (model (offset 0 0 0) (rotate 0 0 0)), so the STEP is already in the footprint frame and no transform was applied. Checked with OpenCascade (step2glb features): Z-up, seated on the board plane, origin = footprint origin.
- Upstream terms: KiCad official library (gitlab.com/kicad/libraries/kicad-footprints, kicad-packages3D and kicad-symbols, master, fetched 2026-11-02). License: CC-BY-SA 4.0 with the KiCad libraries exception (using these files in a design, and distributing the design or its manufacturing output, does not require the design to be licensed under CC-BY-SA). The STEP is KiCad's generic body for this package, not a manufacturer model.
- `sn74lvc2t45dctr.kicad_sym`: KiCad `Logic_LevelTranslator:SN74LVC2T45DCUR` (https://gitlab.com/kicad/libraries/kicad-symbols/-/raw/master/Logic_LevelTranslator.kicad_symdir/SN74LVC2T45DCUR.kicad_sym). KiCad has no DCT-package symbol; the DCU symbol has the same pinout (TI SCES516N Table 4-1 "Pin Functions: DCT, DCU": 1 VCCA, 2 A1, 3 A2, 4 GND, 5 DIR, 6 B2, 7 B1, 8 VCCB). Renamed to the MPN; pins unchanged.

## Notes

- Land pattern check against TI DCT0008A (pins_digest.md: 8X 1.1 x 0.4 mm pads, 3.8 mm between pad rows, read here as pad-centre to pad-centre as TI draws its land patterns): KiCad pads are 1.6 x 0.3 mm at x = +/-1.7 mm, so the outer (toe) pad edge is at 2.50 mm against TI 2.45 mm, but the KiCad pads reach 0.45 mm further inward (heel edge 0.9 vs 1.35 mm) and are 0.1 mm narrower. Pitch 0.65 mm and body 2.95 x 2.8 mm match. Usable as is; switch to TI's land pattern if the assembler wants an exact IPC match.

## License

Adom-authored content CC-BY-4.0; third-party files keep their upstream terms (see `LICENSE`).