component
PCA9555DBR
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.
main
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{
"schema_version": 1,
"type": "component",
"slug": "pca9555dbr",
"title": "PCA9555DBR",
"brief": "Texas Instruments I/O Expanders, SSOP-24-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"interface ics",
"pca9555dbr",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "PCA9555DBR",
"manufacturer": "Texas Instruments",
"package": "SSOP-24-208mil",
"pin_count": 24,
"category": "Interface ICs",
"subcategory": "I/O Expanders",
"datasheet": "https://www.ti.com/lit/ds/symlink/pca9555dbr.pdf",
"parts": {
"symbol": "pca9555dbr.kicad_sym",
"footprint": "pca9555dbr.kicad_mod",
"model_3d": "pca9555dbr-hero.glb",
"model_3d_plain": "pca9555dbr-etched.glb",
"model_3d_step": "pca9555dbr-etched.step",
"model_3d_step_plain": "pca9555dbr.step",
"lbr": "pca9555dbr.lbr"
},
"distributor_links": {
"lcsc": "C45293"
},
"distributor_check": {
"checked_at": "2026-10-22T21:59:10Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "INT",
"type": "output",
"description": "Open-drain active-low interrupt output; connect to VCC through a pullup 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": "Port 0 bit 0 input/output with push-pull design structure."
},
{
"number": "5",
"name": "P01",
"type": "bidirectional",
"description": "Port 0 bit 1 input/output with push-pull design structure."
},
{
"number": "6",
"name": "P02",
"type": "bidirectional",
"description": "Port 0 bit 2 input/output with push-pull design structure."
},
{
"number": "7",
"name": "P03",
"type": "bidirectional",
"description": "Port 0 bit 3 input/output with push-pull design structure."
},
{
"number": "8",
"name": "P04",
"type": "bidirectional",
"description": "Port 0 bit 4 input/output with push-pull design structure."
},
{
"number": "9",
"name": "P05",
"type": "bidirectional",
"description": "Port 0 bit 5 input/output with push-pull design structure."
},
{
"number": "10",
"name": "P06",
"type": "bidirectional",
"description": "Port 0 bit 6 input/output with push-pull design structure."
},
{
"number": "11",
"name": "P07",
"type": "bidirectional",
"description": "Port 0 bit 7 input/output with push-pull design structure."
},
{
"number": "12",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "13",
"name": "P10",
"type": "bidirectional",
"description": "Port 1 bit 0 input/output with push-pull design structure."
},
{
"number": "14",
"name": "P11",
"type": "bidirectional",
"description": "Port 1 bit 1 input/output with push-pull design structure."
},
{
"number": "15",
"name": "P12",
"type": "bidirectional",
"description": "Port 1 bit 2 input/output with push-pull design structure."
},
{
"number": "16",
"name": "P13",
"type": "bidirectional",
"description": "Port 1 bit 3 input/output with push-pull design structure."
},
{
"number": "17",
"name": "P14",
"type": "bidirectional",
"description": "Port 1 bit 4 input/output with push-pull design structure."
},
{
"number": "18",
"name": "P15",
"type": "bidirectional",
"description": "Port 1 bit 5 input/output with push-pull design structure."
},
{
"number": "19",
"name": "P16",
"type": "bidirectional",
"description": "Port 1 bit 6 input/output with push-pull design structure."
},
{
"number": "20",
"name": "P17",
"type": "bidirectional",
"description": "Port 1 bit 7 input/output with push-pull design structure."
},
{
"number": "21",
"name": "A0",
"type": "input",
"description": "Address input 0; connect directly to VCC or ground."
},
{
"number": "22",
"name": "SCL",
"type": "input",
"description": "I2C serial clock bus; connect to VCC through a pullup resistor."
},
{
"number": "23",
"name": "SDA",
"type": "bidirectional",
"description": "I2C serial data bus; connect to VCC through a pullup resistor."
},
{
"number": "24",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage, 2.3 V to 5.5 V recommended operating range."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [],
"pages_sent": 17,
"cost_usd": 0.0594,
"at": "2026-10-22T21:58:51"
},
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/pca9555dbr.pdf",
"pages": 42,
"sha256": "2b12136d10071504",
"source_tier": "mfr"
},
"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"
},
"models_3d": [
{
"file": "pca9555dbr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7.8,
8.2,
2.1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "77dd0a1fc7e70e9eda1bfde9dde937dc6e391803cff9978790523c850c85a21d",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "pca9555dbr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7.8,
8.2,
2.1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "cec6fa4b6e0f769b05a99af7142514d1658006369030c186c6a7a77efd80675b",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SSOP-24-208mil",
"Category": "Interface ICs",
"Pins": "24"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"pca9555dbr"
],
"discovery_pitch": "PCA9555DBR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
},
"files": [
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"README.md",
"pca9555dbr.kicad_sym",
"pca9555dbr.kicad_mod",
"pca9555dbr.glb",
"pca9555dbr.step",
"pca9555dbr.lbr",
"docs/hero.png",
"docs/pca9555dbr-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"pca9555dbr-hero.glb",
"pca9555dbr-hero.overlay.json",
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],
"visibility": {
"public": true
}
}