# SN74LVC1T45DBVRE4

**Texas Instruments** · Translators, Level Shifters · SOT-23-6

SN74LVC1T45DBVRE4 from Texas Instruments, in a SOT-23-6. 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 | System 1 power supply voltage operating from 1.65V to 5.5V |
| 2 | GND | power_in | Device ground |
| 3 | A | bidirectional | Port A bidirectional I/O with output level referenced to VCCA |
| 4 | B | bidirectional | Port B bidirectional I/O with input threshold referenced to VCCB |
| 5 | DIR | input | Direction control input; low level selects B-to-A transmission path, high level selects A-to-B transmission path |
| 6 | VCCB | power_in | System 2 power supply voltage operating from 1.65V to 5.5V |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-6 |
| Category | Logic |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `SN74LVC1T45DBVRE4`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `sn74lvc1t45dbvre4-etched.step` / `sn74lvc1t45dbvre4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvc1t45dbvre4.step` / `sn74lvc1t45dbvre4.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/sn74lvc1t45) (42 pp, sha256 `40d60e2196eafc30`, retrieved 2026-10-06, 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-4-5-20251001` (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/sn74lvc1t45dbvre4-datasheet.pdf)