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PCA9544APWR
Public Made by Adomby adom
Texas Instruments Interface - Specialized, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+56@@ -0,0 +1,56 @@+# PCA9544APWR++**Texas Instruments** · Interface - Specialized · TSSOP-20++PCA9544APWR from Texas Instruments, in a TSSOP-20. 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 | A0 | input | Address input 0 for device address selection; connect directly to VCC or GND. |+| 2 | A1 | input | Address input 1 for device address selection; connect directly to VCC or GND. |+| 3 | A2 | input | Address input 2 for device address selection; connect directly to VCC or GND. |+| 4 | INT0 | input | Active-low interrupt input 0; connect through pull-up resistor to VDPU0. |+| 5 | SD0 | bidirectional | Serial data line for channel 0; I2C/SMBus compatible with open-drain output. |+| 6 | SC0 | bidirectional | Serial clock line for channel 0; I2C/SMBus compatible with open-drain output. |+| 7 | INT1 | input | Active-low interrupt input 1; connect through pull-up resistor to VDPU1. |+| 8 | SD1 | bidirectional | Serial data line for channel 1; I2C/SMBus compatible with open-drain output. |+| 9 | SC1 | bidirectional | Serial clock line for channel 1; I2C/SMBus compatible with open-drain output. |+| 10 | GND | power_in | Ground reference. |+| 11 | INT2 | input | Active-low interrupt input 2; connect through pull-up resistor to VDPU2. |+| 12 | SD2 | bidirectional | Serial data line for channel 2; I2C/SMBus compatible with open-drain output. |+| 13 | SC2 | bidirectional | Serial clock line for channel 2; I2C/SMBus compatible with open-drain output. |+| 14 | INT3 | input | Active-low interrupt input 3; connect through pull-up resistor to VDPU3. |+| 15 | SD3 | bidirectional | Serial data line for channel 3; I2C/SMBus compatible with open-drain output. |+| 16 | SC3 | bidirectional | Serial clock line for channel 3; I2C/SMBus compatible with open-drain output. |+| 17 | INT | output | Active-low interrupt output combining INT0-INT3; open-drain compatible. |+| 18 | SCL | bidirectional | Master serial clock line; I2C/SMBus compatible open-drain output, 0 to 400-kHz clock frequency. |+| 19 | SDA | bidirectional | Master serial data line; I2C/SMBus compatible open-drain output. |+| 20 | VCC | power_in | Supply voltage; operating range 2.3V to 5.5V with 5.5V tolerant inputs. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Interface |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `PCA9544APWR`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)+- 3D model files: `pca9544apwr-etched.step` / `pca9544apwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pca9544apwr.step` / `pca9544apwr.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/pca9544a.pdf) (35 pp, sha256 `0aaabe283001cdaf`, retrieved 2026-10-01, tier: manufacturer)+- **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/pca9544apwr-datasheet.pdf)
page.jsonadded+228@@ -0,0 +1,228 @@+{+ "slug": "pca9544apwr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Interface - Specialized, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "interface",+ "pca9544apwr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "pca9544apwr.kicad_sym",+ "pca9544apwr.kicad_mod",+ "pca9544apwr.glb",+ "pca9544apwr.step",+ "pca9544apwr.lbr",+ "docs/hero.png",+ "docs/pca9544apwr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "PCA9544APWR",+ "manufacturer": "Texas Instruments",+ "package": "TSSOP-20",+ "pin_count": 20,+ "category": "Interface",+ "subcategory": "Interface - Specialized",+ "datasheet": "https://www.ti.com/lit/ds/symlink/pca9544a.pdf",+ "parts": {+ "symbol": "pca9544apwr.kicad_sym",+ "footprint": "pca9544apwr.kicad_mod",+ "model_3d": "pca9544apwr-etched.glb",+ "model_3d_plain": "pca9544apwr.glb",+ "model_3d_step": "pca9544apwr-etched.step",+ "model_3d_step_plain": "pca9544apwr.step",+ "lbr": "pca9544apwr.lbr"+ },+ "distributor_links": {+ "lcsc": "C555455",+ "digikey": "296-20959-2-ND",+ "mouser": "595-PCA9544APWR"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T06:52:20Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-20959-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-PCA9544APWR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "A0",+ "type": "input",+ "description": "Address input 0 for device address selection; connect directly to VCC or GND."+ },+ {+ "number": "2",+ "name": "A1",+ "type": "input",+ "description": "Address input 1 for device address selection; connect directly to VCC or GND."+ },+ {+ "number": "3",+ "name": "A2",+ "type": "input",+ "description": "Address input 2 for device address selection; connect directly to VCC or GND."+ },+ {+ "number": "4",+ "name": "INT0",+ "type": "input",+ "description": "Active-low interrupt input 0; connect through pull-up resistor to VDPU0."+ },+ {+ "number": "5",+ "name": "SD0",+ "type": "bidirectional",+ "description": "Serial data line for channel 0; I2C/SMBus compatible with open-drain output."+ },+ {+ "number": "6",+ "name": "SC0",+ "type": "bidirectional",+ "description": "Serial clock line for channel 0; I2C/SMBus compatible with open-drain output."+ },+ {+ "number": "7",+ "name": "INT1",+ "type": "input",+ "description": "Active-low interrupt input 1; connect through pull-up resistor to VDPU1."+ },+ {+ "number": "8",+ "name": "SD1",+ "type": "bidirectional",+ "description": "Serial data line for channel 1; I2C/SMBus compatible with open-drain output."+ },+ {+ "number": "9",+ "name": "SC1",+ "type": "bidirectional",+ "description": "Serial clock line for channel 1; I2C/SMBus compatible with open-drain output."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference."+ },+ {+ "number": "11",+ "name": "INT2",+ "type": "input",+ "description": "Active-low interrupt input 2; connect through pull-up resistor to VDPU2."+ },+ {+ "number": "12",+ "name": "SD2",+ "type": "bidirectional",+ "description": "Serial data line for channel 2; I2C/SMBus compatible with open-drain output."+ },+ {+ "number": "13",+ "name": "SC2",+ "type": "bidirectional",+ "description": "Serial clock line for channel 2; I2C/SMBus compatible with open-drain output."+ },+ {+ "number": "14",+ "name": "INT3",+ "type": "input",+ "description": "Active-low interrupt input 3; connect through pull-up resistor to VDPU3."+ },+ {+ "number": "15",+ "name": "SD3",+ "type": "bidirectional",+ "description": "Serial data line for channel 3; I2C/SMBus compatible with open-drain output."+ },+ {+ "number": "16",+ "name": "SC3",+ "type": "bidirectional",+ "description": "Serial clock line for channel 3; I2C/SMBus compatible with open-drain output."+ },+ {+ "number": "17",+ "name": "INT",+ "type": "output",+ "description": "Active-low interrupt output combining INT0-INT3; open-drain compatible."+ },+ {+ "number": "18",+ "name": "SCL",+ "type": "bidirectional",+ "description": "Master serial clock line; I2C/SMBus compatible open-drain output, 0 to 400-kHz clock frequency."+ },+ {+ "number": "19",+ "name": "SDA",+ "type": "bidirectional",+ "description": "Master serial data line; I2C/SMBus compatible open-drain output."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage; operating range 2.3V to 5.5V with 5.5V tolerant inputs."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 8,+ "cost_usd": 0.0883,+ "at": "2026-10-01T06:52:03"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/pca9544a.pdf",+ "pages": 35,+ "sha256": "0aaabe283001cdaf",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 20,+ "described": 20,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}