component
MCP23S08-E
Public Made by Adomby adom
Microchip Tech I/O Expanders, SOIC-18-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "mcp23s08-e",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech I/O Expanders, SOIC-18-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"interface",
"mcp23s08-e",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"mcp23s08-e.kicad_sym",
"mcp23s08-e.kicad_mod",
"mcp23s08-e.glb",
"mcp23s08-e.step",
"mcp23s08-e.lbr",
"docs/hero.png",
"docs/mcp23s08-e-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"mcp23s08-e-hero.glb",
"mcp23s08-e-hero.overlay.json",
"mcp23s08-e-etched.glb"
],
"component": {
"mpn": "MCP23S08-E",
"manufacturer": "Microchip Tech",
"package": "SOIC-18-300mil",
"pin_count": 18,
"category": "Interface",
"subcategory": "I/O Expanders",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588882335186235392",
"parts": {
"symbol": "mcp23s08-e.kicad_sym",
"footprint": "mcp23s08-e.kicad_mod",
"model_3d": "mcp23s08-e-hero.glb",
"model_3d_plain": "mcp23s08-e-etched.glb",
"model_3d_step": "mcp23s08-e-etched.step",
"model_3d_step_plain": "mcp23s08-e.step",
"lbr": "mcp23s08-e.lbr"
},
"distributor_links": {
"lcsc": "C152205"
},
"distributor_check": {
"checked_at": "2026-10-19T00:32:22Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "SCK",
"type": "input",
"description": "SPI serial clock input (the table lists it as SCL/SCK, and the MCP23S08 uses the SCK function), with SPI rated to 10 MHz at 2.7 V to 5.5 V and 5 MHz at 1.8 V."
},
{
"number": "2",
"name": "SI",
"type": "input",
"description": "Serial data input for the MCP23S08 SPI interface (listed as SDA/SI in the table)."
},
{
"number": "3",
"name": "SO",
"type": "output",
"description": "Serial data output for the MCP23S08 SPI interface; this pin is not a hardware address input on the S08 variant."
},
{
"number": "4",
"name": "A1",
"type": "input",
"description": "Hardware address input that must be biased externally."
},
{
"number": "5",
"name": "A0",
"type": "input",
"description": "Hardware address input that must be biased externally."
},
{
"number": "6",
"name": "RESET",
"type": "input",
"description": "External reset input that must be biased externally."
},
{
"number": "7",
"name": "CS",
"type": "input",
"description": "External chip select input for the MCP23S08 SPI interface (listed as NC/CS in the table)."
},
{
"number": "8",
"name": "INT",
"type": "output",
"description": "Interrupt output that can be configured as active-high, active-low or open-drain."
},
{
"number": "9",
"name": "VSS",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "10",
"name": "GP0",
"type": "bidirectional",
"description": "Bidirectional I/O pin that defaults to input and can be enabled for interrupt-on-change and/or an internal weak pull-up resistor."
},
{
"number": "11",
"name": "GP1",
"type": "bidirectional",
"description": "Bidirectional I/O pin that defaults to input and can be enabled for interrupt-on-change and/or an internal weak pull-up resistor."
},
{
"number": "12",
"name": "GP2",
"type": "bidirectional",
"description": "Bidirectional I/O pin that defaults to input and can be enabled for interrupt-on-change and/or an internal weak pull-up resistor."
},
{
"number": "13",
"name": "GP3",
"type": "bidirectional",
"description": "Bidirectional I/O pin that defaults to input and can be enabled for interrupt-on-change and/or an internal weak pull-up resistor."
},
{
"number": "14",
"name": "GP4",
"type": "bidirectional",
"description": "Bidirectional I/O pin that defaults to input and can be enabled for interrupt-on-change and/or an internal weak pull-up resistor."
},
{
"number": "15",
"name": "GP5",
"type": "bidirectional",
"description": "Bidirectional I/O pin that defaults to input and can be enabled for interrupt-on-change and/or an internal weak pull-up resistor."
},
{
"number": "16",
"name": "GP6",
"type": "bidirectional",
"description": "Bidirectional I/O pin that defaults to input and can be enabled for interrupt-on-change and/or an internal weak pull-up resistor."
},
{
"number": "17",
"name": "GP7",
"type": "bidirectional",
"description": "Bidirectional I/O pin that defaults to input and can be enabled for interrupt-on-change and/or an internal weak pull-up resistor."
},
{
"number": "18",
"name": "VDD",
"type": "power_in",
"description": "Power supply pin; the device operates from 1.8 V to 5.5 V depending on temperature and interface speed."
}
],
"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: Table 1-1 gives combined names for shared pins (SCL/SCK, SDA/SI, A2/SO, NC/CS). I used the MCP23S08 ; The 18-lead SOIC (300 mil) pinout is taken from the PDIP/SOIC column of Table 1-1 on page 5. The SOI; Voltage ranges are quoted from the features list on page 1 and are not stated in the pin table. The "
],
"pages_sent": 11,
"cost_usd": 0.0579,
"at": "2026-10-19T00:28:52"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588882335186235392",
"pages": 44,
"sha256": "573ae3991f57d129",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 18,
"described": 18,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "mcp23s08-e.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
10.3,
11.55,
2.75
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "05ad7d4945131c76ec7b9448dd9cbb5376b56adcd564c58d93e50ca7870fab1f",
"checked": "2026-10-19",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "mcp23s08-e-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
10.3,
11.55,
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],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "3398edbd2266f6098b4c8b9487d28488f37a11ee904d46f2849484106d1068b7",
"checked": "2026-10-19",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}