# SN74LXC1T45QDCKRQ1

**Texas Instruments** · Translators, Level Shifters · SC-70-6

SN74LXC1T45QDCKRQ1 from Texas Instruments, in a SC-70-6. 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 | A-port supply voltage, specified for 1.1 V ≤ VCCA ≤ 5.5 V. |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | A | bidirectional | Input or output A, referenced to VCCA. |
| 4 | B | bidirectional | Input or output B, referenced to VCCB. |
| 5 | DIR | input | Direction-control signal for all ports, referenced to VCCA. |
| 6 | VCCB | power_in | B-port supply voltage, specified for 1.1 V ≤ VCCB ≤ 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SC-70-6 |
| Category | Logic |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `SN74LXC1T45QDCKRQ1`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SC-70-6 (KiCad packages3D, STEP)
- 3D model files: `sn74lxc1t45qdckrq1-etched.step` / `sn74lxc1t45qdckrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lxc1t45qdckrq1.step` / `sn74lxc1t45qdckrq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905842545729536) (36 pp, sha256 `b04658910a57134b`, retrieved 2026-10-10, tier: lcsc)
- **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/sn74lxc1t45qdckrq1-datasheet.pdf)