component
PCA9538PWR
Public Made by Adomby adom
Texas Instruments I/O Expanders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+52@@ -0,0 +1,52 @@+# PCA9538PWR++**Texas Instruments** · I/O Expanders · TSSOP-16++PCA9538PWR from Texas Instruments, in a TSSOP-16. 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 | A0 | input | I2C address input 0; connect to VCC or GND to set slave address. |+| 2 | A1 | input | I2C address input 1; connect to VCC or GND to set slave address. |+| 3 | RESET | input | Active-low reset input; 4 ns minimum pulse width; requires pullup resistor to VCC if unused. |+| 4 | P0 | bidirectional | I/O port bit 0; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin. |+| 5 | P1 | bidirectional | I/O port bit 1; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin. |+| 6 | P2 | bidirectional | I/O port bit 2; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin. |+| 7 | P3 | bidirectional | I/O port bit 3; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin. |+| 8 | GND | power_in | Ground (0 V reference). |+| 9 | P4 | bidirectional | I/O port bit 4; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin. |+| 10 | P5 | bidirectional | I/O port bit 5; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin. |+| 11 | P6 | bidirectional | I/O port bit 6; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin. |+| 12 | P7 | bidirectional | I/O port bit 7; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin. |+| 13 | INT | tri_state | Open-drain interrupt output; asserts low when configured input port changes; requires pullup resistor to VCC. |+| 14 | SCL | tri_state | I2C serial clock bus; open-drain output; requires pullup resistor to VCC. |+| 15 | SDA | tri_state | I2C serial data bus; open-drain output; requires pullup resistor to VCC. |+| 16 | VCC | power_in | Supply voltage; operating range 2.3 V to 5.5 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-16 |+| Category | Interface |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `PCA9538PWR`+- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`+- 3D model: TSSOP-16 (KiCad packages3D, STEP)+- 3D model files: `pca9538pwr-etched.step` / `pca9538pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pca9538pwr.step` / `pca9538pwr.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/pca9538.pdf) (44 pp, sha256 `7bbc8724cd47ce44`, retrieved 2026-09-18, tier: manufacturer)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/pca9538pwr-datasheet.pdf)
page.jsonadded+189@@ -0,0 +1,189 @@+{+ "slug": "pca9538pwr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments I/O Expanders, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "interface",+ "pca9538pwr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "pca9538pwr.kicad_sym",+ "pca9538pwr.kicad_mod",+ "pca9538pwr.glb",+ "pca9538pwr.step",+ "pca9538pwr.lbr",+ "docs/hero.png",+ "docs/pca9538pwr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "PCA9538PWR",+ "manufacturer": "Texas Instruments",+ "package": "TSSOP-16",+ "pin_count": 16,+ "category": "Interface",+ "subcategory": "I/O Expanders",+ "datasheet": "https://www.ti.com/lit/ds/symlink/pca9538.pdf",+ "parts": {+ "symbol": "pca9538pwr.kicad_sym",+ "footprint": "pca9538pwr.kicad_mod",+ "model_3d": "pca9538pwr-etched.glb",+ "model_3d_plain": "pca9538pwr.glb",+ "model_3d_step": "pca9538pwr-etched.step",+ "model_3d_step_plain": "pca9538pwr.step",+ "lbr": "pca9538pwr.lbr"+ },+ "distributor_links": {+ "lcsc": "C201530"+ },+ "pins": [+ {+ "number": "1",+ "name": "A0",+ "type": "input",+ "description": "I2C address input 0; connect to VCC or GND to set slave address."+ },+ {+ "number": "2",+ "name": "A1",+ "type": "input",+ "description": "I2C address input 1; connect to VCC or GND to set slave address."+ },+ {+ "number": "3",+ "name": "RESET",+ "type": "input",+ "description": "Active-low reset input; 4 ns minimum pulse width; requires pullup resistor to VCC if unused."+ },+ {+ "number": "4",+ "name": "P0",+ "type": "bidirectional",+ "description": "I/O port bit 0; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin."+ },+ {+ "number": "5",+ "name": "P1",+ "type": "bidirectional",+ "description": "I/O port bit 1; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin."+ },+ {+ "number": "6",+ "name": "P2",+ "type": "bidirectional",+ "description": "I/O port bit 2; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin."+ },+ {+ "number": "7",+ "name": "P3",+ "type": "bidirectional",+ "description": "I/O port bit 3; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin."+ },+ {+ "number": "8",+ "name": "GND",+ "type": "power_in",+ "description": "Ground (0 V reference)."+ },+ {+ "number": "9",+ "name": "P4",+ "type": "bidirectional",+ "description": "I/O port bit 4; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin."+ },+ {+ "number": "10",+ "name": "P5",+ "type": "bidirectional",+ "description": "I/O port bit 5; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin."+ },+ {+ "number": "11",+ "name": "P6",+ "type": "bidirectional",+ "description": "I/O port bit 6; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin."+ },+ {+ "number": "12",+ "name": "P7",+ "type": "bidirectional",+ "description": "I/O port bit 7; configurable as high-Z input or push-pull output; 5 V tolerant; maximum sink current 25 mA per pin."+ },+ {+ "number": "13",+ "name": "INT",+ "type": "tri_state",+ "description": "Open-drain interrupt output; asserts low when configured input port changes; requires pullup resistor to VCC."+ },+ {+ "number": "14",+ "name": "SCL",+ "type": "tri_state",+ "description": "I2C serial clock bus; open-drain output; requires pullup resistor to VCC."+ },+ {+ "number": "15",+ "name": "SDA",+ "type": "tri_state",+ "description": "I2C serial data bus; open-drain output; requires pullup resistor to VCC."+ },+ {+ "number": "16",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage; operating range 2.3 V to 5.5 V."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 44,+ "cost_usd": 0.3032,+ "at": "2026-09-18T02:59:02"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/pca9538.pdf",+ "pages": 44,+ "sha256": "7bbc8724cd47ce44",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 16,+ "described": 16,+ "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]"+ }+}