component
TCA9555RGER
Public Made by Adomby adom
Texas Instruments I/O Expanders, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "tca9555rger",
"version": "0.1.0",
"type": "component",
"description": "Texas Instruments I/O Expanders, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"interface",
"tca9555rger",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"tca9555rger.kicad_sym",
"tca9555rger.kicad_mod",
"tca9555rger.glb",
"tca9555rger.step",
"tca9555rger.lbr",
"docs/hero.png",
"docs/tca9555rger-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"tca9555rger-hero.glb",
"tca9555rger-hero.overlay.json",
"tca9555rger-etched.glb"
],
"component": {
"mpn": "TCA9555RGER",
"manufacturer": "Texas Instruments",
"package": "VQFN-24-EP(4x4)",
"pin_count": 25,
"category": "Interface",
"subcategory": "I/O Expanders",
"datasheet": "https://www.ti.com/lit/ds/symlink/tca9555.pdf",
"parts": {
"symbol": "tca9555rger.kicad_sym",
"footprint": "tca9555rger.kicad_mod",
"model_3d": "tca9555rger-hero.glb",
"model_3d_plain": "tca9555rger-etched.glb",
"model_3d_step": "tca9555rger-etched.step",
"model_3d_step_plain": "tca9555rger.step",
"lbr": "tca9555rger.lbr"
},
"distributor_links": {
"lcsc": "C2869248",
"digikey": "296-44537-2-ND",
"mouser": "595-TCA9555RGER"
},
"distributor_check": {
"checked_at": "2026-11-06T00:38:45Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-44537-2-ND",
"status": "found"
},
"mouser": {
"pn": "595-TCA9555RGER",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "P00",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "2",
"name": "P01",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "3",
"name": "P02",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "4",
"name": "P03",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "5",
"name": "P04",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "6",
"name": "P05",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "7",
"name": "P06",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "8",
"name": "P07",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "9",
"name": "GND",
"type": "power_in",
"description": "Ground. The exposed thermal pad, if used, must be connected as a secondary ground or left electrically open."
},
{
"number": "10",
"name": "P10",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "11",
"name": "P11",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "12",
"name": "P12",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "13",
"name": "P13",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "14",
"name": "P14",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "15",
"name": "P15",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "16",
"name": "P16",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "17",
"name": "P17",
"type": "bidirectional",
"description": "P-port I/O with push-pull design structure, configured as an input at power on."
},
{
"number": "18",
"name": "A0",
"type": "input",
"description": "Address input 0. Connect directly to VCC or ground."
},
{
"number": "19",
"name": "SCL",
"type": "input",
"description": "Serial clock bus. Connect to VCC through a pull-up resistor."
},
{
"number": "20",
"name": "SDA",
"type": "bidirectional",
"description": "Serial data bus. Connect to VCC through a pull-up resistor."
},
{
"number": "21",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage. Recommended operating range is 1.65 V to 5.5 V."
},
{
"number": "22",
"name": "INT",
"type": "output",
"description": "Interrupt output. Connect to VCC through a pull-up resistor."
},
{
"number": "23",
"name": "A1",
"type": "input",
"description": "Address input 1. Connect directly to VCC or ground."
},
{
"number": "24",
"name": "A2",
"type": "input",
"description": "Address input 2. Connect directly to VCC or ground."
},
{
"number": "25",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The requested VQFN-24-EP(4x4) package is the RGE package in the datasheet. The exposed thermal pad i"
],
"pages_sent": 12,
"cost_usd": 0.0243,
"at": "2026-11-06T00:37:27"
},
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/tca9555.pdf",
"pages": 49,
"sha256": "9706a3ccbf0bc915",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 25,
"described": 25,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "tca9555rger.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.0,
4.0,
0.77
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
"checked": "2026-11-06",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "tca9555rger-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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0.77
],
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"sha256": "f8e88a84b99b3c58f07c470375b716798b27709a1eda6c9d64e5b463e69bcf26",
"checked": "2026-11-06",
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}
]
}
}