# SN74AVCH1T45DCKT

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

SN74AVCH1T45DCKT 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 power supply voltage, 1.2V ≤ VCCA ≤ 3.6V |
| 2 | GND | power_in | Ground connection |
| 3 | A | bidirectional | Input/output A referenced to VCCA, supports 1.2V to 3.6V I/O voltage with bus-hold circuitry |
| 4 | B | bidirectional | Input/output B referenced to VCCB, supports 1.2V to 3.6V I/O voltage with bus-hold circuitry |
| 5 | DIR | input | Direction control input referenced to VCCA; high level enables A to B data transmission, low level enables B to A data transmission |
| 6 | VCCB | power_in | B port power supply voltage, 1.2V ≤ VCCB ≤ 3.6V |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SN74AVCH1T45DCKT`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SC-70-6 (KiCad packages3D, STEP)
- 3D model files: `sn74avch1t45dckt-etched.step` / `sn74avch1t45dckt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74avch1t45dckt.step` / `sn74avch1t45dckt.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/sn74avch1t45) (39 pp, sha256 `250f2548df506d65`, retrieved 2026-10-07, 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/sn74avch1t45dckt-datasheet.pdf)