component
SI8642EC-B-IS1
Public Made by Adomby adom
SILICON LABS Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "si8642ec-b-is1",
"version": "0.1.0",
"type": "component",
"description": "SILICON LABS Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"interface ics",
"si8642ec-b-is1",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"si8642ec-b-is1.kicad_sym",
"si8642ec-b-is1.kicad_mod",
"si8642ec-b-is1.glb",
"si8642ec-b-is1.step",
"si8642ec-b-is1.lbr",
"docs/hero.png",
"docs/si8642ec-b-is1-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"si8642ec-b-is1-hero.glb",
"si8642ec-b-is1-hero.overlay.json",
"si8642ec-b-is1-etched.glb"
],
"component": {
"mpn": "SI8642EC-B-IS1",
"manufacturer": "SILICON LABS",
"package": "SOIC-16",
"pin_count": 16,
"category": "Interface ICs",
"subcategory": "Digital Isolators",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/23593474e61ae380159c3f5d2ba58a3e.pdf",
"parts": {
"symbol": "si8642ec-b-is1.kicad_sym",
"footprint": "si8642ec-b-is1.kicad_mod",
"model_3d": "si8642ec-b-is1-hero.glb",
"model_3d_plain": "si8642ec-b-is1-etched.glb",
"model_3d_step": "si8642ec-b-is1-etched.step",
"model_3d_step_plain": "si8642ec-b-is1.step",
"lbr": "si8642ec-b-is1.lbr"
},
"distributor_links": {
"lcsc": "C430281",
"digikey": "336-2094-5-ND",
"mouser": "634-SI8642EC-B-IS1"
},
"distributor_check": {
"checked_at": "2026-10-30T12:06:28Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "336-2094-5-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "634-SI8642EC-B-IS1",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VDD1",
"type": "power_in",
"description": "Side 1 power supply, operating range 2.5-5.5 V, requiring a 0.1 µF bypass capacitor to GND1."
},
{
"number": "2",
"name": "GND1",
"type": "power_in",
"description": "Side 1 ground; on narrow-body devices pin 2 must be externally connected to ground."
},
{
"number": "3",
"name": "A1",
"type": "input",
"description": "Side 1 digital input."
},
{
"number": "4",
"name": "A2",
"type": "input",
"description": "Side 1 digital input."
},
{
"number": "5",
"name": "A3",
"type": "bidirectional",
"description": "Side 1 digital input or output (direction depends on the Si864x variant)."
},
{
"number": "6",
"name": "A4",
"type": "bidirectional",
"description": "Side 1 digital input or output (direction depends on the Si864x variant)."
},
{
"number": "7",
"name": "EN1",
"type": "input",
"description": "Side 1 active-high enable (EN1/NC pin; it is an NC only on Si8640/45); can be tied high or left floating to enable."
},
{
"number": "8",
"name": "GND1",
"type": "power_in",
"description": "Side 1 ground; on narrow-body devices pin 8 must be externally connected to ground."
},
{
"number": "9",
"name": "GND2",
"type": "power_in",
"description": "Side 2 ground; on narrow-body devices pin 9 must be externally connected to ground."
},
{
"number": "10",
"name": "EN2",
"type": "input",
"description": "Side 2 active-high enable (EN2/NC pin; it is an NC only on Si8645); output goes Hi-Z when low."
},
{
"number": "11",
"name": "B4",
"type": "bidirectional",
"description": "Side 2 digital input or output (direction depends on the Si864x variant)."
},
{
"number": "12",
"name": "B3",
"type": "bidirectional",
"description": "Side 2 digital input or output (direction depends on the Si864x variant)."
},
{
"number": "13",
"name": "B2",
"type": "output",
"description": "Side 2 digital output."
},
{
"number": "14",
"name": "B1",
"type": "output",
"description": "Side 2 digital output."
},
{
"number": "15",
"name": "GND2",
"type": "power_in",
"description": "Side 2 ground; on narrow-body devices pin 15 must be externally connected to ground."
},
{
"number": "16",
"name": "VDD2",
"type": "power_in",
"description": "Side 2 power supply, operating range 2.5-5.5 V, requiring a 0.1 µF bypass capacitor to GND2."
}
],
"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": [
"extractor flagged: The pin table is shared by Si8640/41/42/45 and lists A3, A4, B3 and B4 only as 'Digital I/O'. For th; EN1 (pin 7) and EN2 (pin 10) are named 'EN1/NC' and 'EN2/NC' in the table. The Si8642 diagram shows ; MPN Si8642EC-B-IS1 is the NB SOIC-16 (IS1 suffix, 3.75 kV, default high, 2 inputs per side). The pin"
],
"pages_sent": 20,
"cost_usd": 0.1675,
"at": "2026-10-30T12:06:13"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/23593474e61ae380159c3f5d2ba58a3e.pdf",
"pages": 44,
"sha256": "2425141c8d33cf85",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "si8642ec-b-is1.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.0,
9.9,
1.75
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "si8642ec-b-is1-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.0,
9.9,
1.75
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "5dc648e8bbc18514aed79a75d303ea53e1df8d72eb6854e4ef136d00ed2ae057",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "NB SOIC-16",
"source_page": 33,
"D": {
"nom_mm": 9.9,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 3.9,
"range_mm": [
null,
null
]
},
"E": {
"nom_mm": 6.0,
"range_mm": [
null,
null
]
},
"e": {
"nom_mm": 1.27,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1.75,
"range_mm": [
null,
1.75
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "si8642ec-b-is1.step",
"verdict": "PASS",
"reasons": [
"height and body within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
}
}