PCA9306

@@ -0,0 +1,52 @@+# PCA9306++**Texas Instruments** · I2C level translator · VSSOP-8++Translates the two lines of an I2C or SMBus bus between a lower and a higher voltage domain, so a 1.8 or 3.3 V controller talks to 5 V devices on the same bus. Each channel is a pass transistor with no direction control, so it handles the open-drain, bidirectional traffic automatically, and the two VREF pins set the levels for each side. An EN pin isolates the buses when low. A tiny, standard fix for mixed-voltage I2C.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | GND | power_in | Ground, 0 V reference for the device. |+| 2 | VREF1 | power_in | Low-voltage-side reference supply voltage for SCL1 and SDA1. Recommended operating range 0 V to 5.5 V; supports translation from 1.2 V up to (VREF2 - 0.6 V). |+| 3 | SCL1 | bidirectional | Serial clock, low-voltage side. Open-drain I2C/SMBus clock line referenced to VREF1. High-impedance when EN is low. |+| 4 | SDA1 | bidirectional | Serial data, low-voltage side. Open-drain I2C/SMBus data line referenced to VREF1. High-impedance when EN is low. |+| 5 | SDA2 | bidirectional | Serial data, high-voltage side. Open-drain I2C/SMBus data line referenced to VREF2. High-impedance when EN is low. |+| 6 | SCL2 | bidirectional | Serial clock, high-voltage side. Open-drain I2C/SMBus clock line referenced to VREF2. High-impedance when EN is low. |+| 7 | VREF2 | power_in | High-voltage-side reference supply voltage for SCL2 and SDA2. Recommended operating range 0 V to 5.5 V; must be between VREF1 + 0.6 V and 5.5 V for translation. |+| 8 | EN | input | Switch enable input. When high, the translator switch is ON and SCL1/SDA1 connect to SCL2/SDA2. When low, the switch is off and all I/Os are high-impedance (also isolates the bus, e.g. a 400-kHz bus from a 100-kHz bus). |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Dual bidirectional I2C/SMBus level translator |+| Low side | 1.0-3.6 V |+| High side | 1.8-5.5 V |+| Channels | 2 (SCL, SDA) |+| Direction control | None (pass-transistor) |+| Enable | EN pin isolates buses |+| Package | VSSOP-8 |++## Ordering variants++- `PCA9306DCUR (VSSOP-8, tape & reel)`+- `PCA9306DCUT (VSSOP-8, small reel)`+- `PCA9306DQER (X2SON-8)`++## CAD (KiCad official)++- Symbol: `Interface:PCA9306 (KiCad official)`+- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`+- 3D model: VSSOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/pca9306.pdf) (38 pp, sha256 `1cd97c734729f2bf`, 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/pca9306-datasheet.pdf)

@@ -0,0 +1,38 @@+{+  "slug": "pca9306",+  "version": "0.1.0",+  "type": "component",+  "description": "TI dual bidirectional I2C/SMBus voltage-level translator, VSSOP-8. 1.0-3.6 V to 1.8-5.5 V, no direction pin. Datasheet-verified.",+  "tags": [+    "component",+    "interface",+    "level-translator",+    "level-shifter",+    "i2c",+    "vssop-8",+    "texas-instruments"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "pca9306.kicad_sym",+    "pca9306.kicad_mod",+    "pca9306.glb",+    "pca9306.step",+    "pca9306.lbr",+    "docs/hero.png",+    "docs/pca9306-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file