component
MCP23009T-E
Public Made by Adomby adom
Microchip Tech I/O Expanders, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "mcp23009t-e",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech I/O Expanders, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"interface",
"mcp23009t-e",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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"component": {
"mpn": "MCP23009T-E",
"manufacturer": "Microchip Tech",
"package": "SSOP-20-208mil",
"pin_count": 20,
"category": "Interface",
"subcategory": "I/O Expanders",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589805857048190976",
"parts": {
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"footprint": "mcp23009t-e.kicad_mod",
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"model_3d_plain": "mcp23009t-e-etched.glb",
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"lbr": "mcp23009t-e.lbr"
},
"distributor_links": {
"lcsc": "C629436"
},
"distributor_check": {
"checked_at": "2026-10-18T10:05:29Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "VDD",
"type": "power_in",
"description": "Power supply pin; the device operates from 1.8V to 5.5V per the datasheet features list."
},
{
"number": "2",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "3",
"name": "SCL",
"type": "input",
"description": "Serial clock input for the I2C interface (MCP23009)."
},
{
"number": "4",
"name": "SDA",
"type": "bidirectional",
"description": "Serial data I/O for the I2C interface (MCP23009)."
},
{
"number": "5",
"name": "ADDR",
"type": "input",
"description": "Hardware address pin that allows up to eight slave devices on the bus."
},
{
"number": "6",
"name": "RESET",
"type": "input",
"description": "Hardware reset input."
},
{
"number": "7",
"name": "INT",
"type": "output",
"description": "Interrupt output for the port; can be configured as active-high, active-low or open-drain."
},
{
"number": "8",
"name": "GP0",
"type": "bidirectional",
"description": "Bidirectional I/O pin with 5.5V tolerant inputs and open-drain outputs; can be enabled for interrupt-on-change and/or internal pull-up resistor."
},
{
"number": "9",
"name": "GP1",
"type": "bidirectional",
"description": "Bidirectional I/O pin with 5.5V tolerant inputs and open-drain outputs; can be enabled for interrupt-on-change and/or internal pull-up resistor."
},
{
"number": "10",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "11",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "12",
"name": "GP2",
"type": "bidirectional",
"description": "Bidirectional I/O pin with 5.5V tolerant inputs and open-drain outputs; can be enabled for interrupt-on-change and/or internal pull-up resistor."
},
{
"number": "13",
"name": "GP3",
"type": "bidirectional",
"description": "Bidirectional I/O pin with 5.5V tolerant inputs and open-drain outputs; can be enabled for interrupt-on-change and/or internal pull-up resistor."
},
{
"number": "14",
"name": "GP4",
"type": "bidirectional",
"description": "Bidirectional I/O pin with 5.5V tolerant inputs and open-drain outputs; can be enabled for interrupt-on-change and/or internal pull-up resistor."
},
{
"number": "15",
"name": "GP5",
"type": "bidirectional",
"description": "Bidirectional I/O pin with 5.5V tolerant inputs and open-drain outputs; can be enabled for interrupt-on-change and/or internal pull-up resistor."
},
{
"number": "16",
"name": "GP6",
"type": "bidirectional",
"description": "Bidirectional I/O pin with 5.5V tolerant inputs and open-drain outputs; can be enabled for interrupt-on-change and/or internal pull-up resistor."
},
{
"number": "17",
"name": "GP7",
"type": "bidirectional",
"description": "Bidirectional I/O pin with 5.5V tolerant inputs and open-drain outputs; can be enabled for interrupt-on-change and/or internal pull-up resistor."
},
{
"number": "18",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "19",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "20",
"name": "VSS",
"type": "power_in",
"description": "Ground reference pin."
}
],
"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 20-lead SSOP pinout is taken from the 20-lead SSOP column of Table 1-1 (I2C pinout, MCP23009) on; Pages 2 and 3 of the datasheet are partly missing from the supplied excerpt, and no SSOP top-view pi; The table lists NC on SSOP pins 2, 10, 11, 18 and 19. Pins 10 and 11 are NC here while GP2 is pin 12"
],
"pages_sent": 11,
"cost_usd": 0.0522,
"at": "2026-10-18T10:04:42"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589805857048190976",
"pages": 52,
"sha256": "70744ea2313e65a6",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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{
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}