component
TCA9555DBT
Public Made by Adomby adom
Texas Instruments I/O Expanders, SSOP-24-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+61@@ -0,0 +1,61 @@+# TCA9555DBT++**Texas Instruments** · I/O Expanders · SSOP-24-208mil++TCA9555DBT from Texas Instruments, in a SSOP-24-208mil. 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 | INT | output | Interrupt output with open-drain structure; connect to VCC through pull-up resistor |+| 2 | A1 | input | Address input 1; connect directly to VCC or ground |+| 3 | A2 | input | Address input 2; connect directly to VCC or ground |+| 4 | P00 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 5 | P01 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 6 | P02 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 7 | P03 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 8 | P04 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 9 | P05 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 10 | P06 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 11 | P07 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 12 | GND | power_in | Ground |+| 13 | P10 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 14 | P11 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 15 | P12 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 16 | P13 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 17 | P14 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 18 | P15 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 19 | P16 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 20 | P17 | bidirectional | P-port I/O with push-pull design structure; configured as input at power-on |+| 21 | A0 | input | Address input 0; connect directly to VCC or ground |+| 22 | SCL | input | Serial clock bus for I2C/SMBus interface; connect to VCC through pull-up resistor |+| 23 | SDA | input | Serial data bus for I2C/SMBus interface; connect to VCC through pull-up resistor |+| 24 | VCC | power_in | Supply voltage, recommended operating range 1.65V to 5.5V |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-24-208mil |+| Category | Communication Interface Chip/UART/485/232 |+| Pins | 24 |++## CAD (KiCad official)++- Symbol: `TCA9555DBT`+- Footprint: `Package_SO:SSOP-24_5.3x8.2mm_P0.65mm`+- 3D model: SSOP-24-208mil (KiCad packages3D, STEP)+- 3D model files: `tca9555dbt-etched.step` / `tca9555dbt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tca9555dbt.step` / `tca9555dbt.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/tca9555) (49 pp, sha256 `7e8b64bcef672c03`, retrieved 2026-10-06, 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/tca9555dbt-datasheet.pdf)
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connect to VCC through pull-up resistor"+ },+ {+ "number": "2",+ "name": "A1",+ "type": "input",+ "description": "Address input 1; connect directly to VCC or ground"+ },+ {+ "number": "3",+ "name": "A2",+ "type": "input",+ "description": "Address input 2; connect directly to VCC or ground"+ },+ {+ "number": "4",+ "name": "P00",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "5",+ "name": "P01",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "6",+ "name": "P02",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "7",+ "name": "P03",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "8",+ "name": "P04",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "9",+ "name": "P05",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "10",+ "name": "P06",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "11",+ "name": "P07",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "12",+ "name": "GND",+ "type": "power_in",+ "description": "Ground"+ },+ {+ "number": "13",+ "name": "P10",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "14",+ "name": "P11",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "15",+ "name": "P12",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "16",+ "name": "P13",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "17",+ "name": "P14",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "18",+ "name": "P15",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "19",+ "name": "P16",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "20",+ "name": "P17",+ "type": "bidirectional",+ "description": "P-port I/O with push-pull design structure; configured as input at power-on"+ },+ {+ "number": "21",+ "name": "A0",+ "type": "input",+ "description": "Address input 0; connect directly to VCC or ground"+ },+ {+ "number": "22",+ "name": "SCL",+ "type": "input",+ "description": "Serial clock bus for I2C/SMBus interface; connect to VCC through pull-up resistor"+ },+ {+ "number": "23",+ "name": "SDA",+ "type": "input",+ "description": "Serial data bus for I2C/SMBus interface; connect to VCC through pull-up resistor"+ },+ {+ "number": "24",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage, recommended operating range 1.65V to 5.5V"+ }+ ],+ "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": 12,+ "cost_usd": 0.1443,+ "at": "2026-10-06T17:23:57"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tca9555",+ "pages": 49,+ "sha256": "7e8b64bcef672c03",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 24,+ "described": 24,+ "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]"+ }+}