# SN74AXC1T45DRLR

**Texas Instruments** · Translators, Level Shifters · SOT-563

SN74AXC1T45DRLR from Texas Instruments, in a SOT-563. 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, which must be kept within 0.65 V to 3.6 V (0.65 V ≤ VCCA ≤ 3.6 V). |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | A | bidirectional | Input or output A, referenced to VCCA; do not leave it floating when it is configured as an input. |
| 4 | B | bidirectional | Input or output B, referenced to VCCB; do not leave it floating when it is configured as an input. |
| 5 | DIR | input | Direction control: logic high selects A-to-B translation and logic low selects B-to-A translation; the DIR logic thresholds are referenced to VCCA. |
| 6 | VCCB | power_in | B-port supply voltage, which must be kept within 0.65 V to 3.6 V (0.65 V ≤ VCCB ≤ 3.6 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-563 |
| Category | Logic |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `SN74AXC1T45DRLR`
- Footprint: `Package_TO_SOT_SMD:SOT-563`
- 3D model: SOT-563 (KiCad packages3D, STEP)
- 3D model files: `sn74axc1t45drlr-etched.step` / `sn74axc1t45drlr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74axc1t45drlr.step` / `sn74axc1t45drlr.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/lit/ds/symlink/sn74axc1t45.pdf) (45 pp, sha256 `41e03bd8f0740ae8`, retrieved 2026-10-08, tier: manufacturer)
- **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/sn74axc1t45drlr-datasheet.pdf)