# PCA9306DCUR

**Texas Instruments** · Translators / Level Shifters · VSSOP-8

PCA9306DCUR from Texas Instruments, in a VSSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground reference, 0 V. |
| 2 | VREF1 | power_in | Low-voltage-side reference supply voltage for SCL1 and SDA1. Operating range 1.2 V to 3.3 V (absolute max 7 V). |
| 3 | SCL1 | bidirectional | Serial clock, low-voltage side. Open-drain I2C clock line referenced to VREF1. Requires external pull-up resistor to VREF1. |
| 4 | SDA1 | bidirectional | Serial data, low-voltage side. Open-drain I2C data line referenced to VREF1. Requires external pull-up resistor. |
| 5 | SDA2 | bidirectional | Serial data, high-voltage side. Open-drain I2C data line referenced to VREF2 side supply. Requires external pull-up resistor. |
| 6 | SCL2 | bidirectional | Serial clock, high-voltage side. Open-drain I2C clock line referenced to VREF2 side supply. Requires external pull-up resistor. |
| 7 | VREF2 | power_in | High-voltage-side reference supply voltage for SCL2 and SDA2. Operating range 1.8 V to 5.5 V (absolute max 7 V). |
| 8 | EN | input | Switch enable input. EN high enables the translator (SCL1=SCL2, SDA1=SDA2); EN low disconnects the switches, placing SCL/SDA in high-impedance state. Operating range 0 to 5 V. |

## Key specifications

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

## Ordering variants

Same part, different packaging or reel option.

- `PCA9306DCUR`
- `PCA9306DCURDCUT`
- `PCA9306DCURDCTR`
- `PCA9306DCURDCTT`
- `PCA9306DCURDQER`
- `PCA9306DCURYZTR`

## CAD (KiCad official)

- Symbol: `PCA9306DCUR`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `pca9306dcur-etched.step` / `pca9306dcur-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pca9306dcur.step` / `pca9306dcur.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/pca9306dcur.pdf) (22 pp, sha256 `ca7a67f9c82d010b`, retrieved 2026-08-17, tier: manufacturer)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/pca9306dcur-datasheet.pdf)