# SN74AVC2T45DCUR

**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · VSSOP-8

SN74AVC2T45DCUR from Texas Instruments, in a VSSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VCCA | power_in | Supply voltage for the A port; A-side I/O output levels track VCCA, which the recommended operating conditions specify as 1.2 V to 3.6 V. |
| 2 | A1 | bidirectional | Input or output depending on the DIR state; the output level is referenced to VCCA. |
| 3 | A2 | bidirectional | Input or output depending on the DIR state; the output level is referenced to VCCA. |
| 4 | GND | power_in | Device ground; if either VCC input is tied to GND, both ports are placed in the high-impedance state. |
| 5 | DIR | input | Direction control input connected to GND or VCCA; DIR low transfers data from the B bus to the A bus and DIR high transfers data from the A bus to the B bus. |
| 6 | B2 | bidirectional | Input or output depending on the DIR state; the output level is referenced to VCCB. |
| 7 | B1 | bidirectional | Input or output depending on the DIR state; the output level is referenced to VCCB. |
| 8 | VCCB | power_in | Supply voltage for the B port; B-side I/O output levels track VCCB, which the recommended operating conditions specify as 1.2 V to 3.6 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SN74AVC2T45DCUR`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `sn74avc2t45dcur-etched.step` / `sn74avc2t45dcur-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74avc2t45dcur.step` / `sn74avc2t45dcur.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/sn74avc2t45) (38 pp, sha256 `cf78258faf01cf90`, retrieved 2026-10-08, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/sn74avc2t45dcur-datasheet.pdf)