component
SI8641BA-B-IU
Public Made by Adomby adom
Skyworks Solutions Digital Isolators, QSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"checked_at": "2026-10-27T07:57:00Z",
"source": "Component Ocean /api/assign-pns",
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"status": "quota"
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"type": "power_in",
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{
"number": "2",
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"type": "power_in",
"description": "Side 1 ground, which must be externally connected to side 1 ground on narrow-body style packages."
},
{
"number": "3",
"name": "A1",
"type": "input",
"description": "Side 1 digital input, passed to output B1 across the isolation barrier."
},
{
"number": "4",
"name": "A2",
"type": "input",
"description": "Side 1 digital input, passed to output B2 across the isolation barrier."
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{
"number": "5",
"name": "A3",
"type": "input",
"description": "Side 1 digital input, passed to output B3 across the isolation barrier."
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{
"number": "6",
"name": "A4",
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{
"number": "7",
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"type": "input",
"description": "Side 1 active-high enable for output A4, internally pulled up to VDD1 so it can be left floating or tied to a logic level."
},
{
"number": "8",
"name": "GND1",
"type": "power_in",
"description": "Side 1 ground, which must be externally connected to side 1 ground on narrow-body style packages."
},
{
"number": "9",
"name": "GND2",
"type": "power_in",
"description": "Side 2 ground, which must be externally connected to side 2 ground on narrow-body style packages."
},
{
"number": "10",
"name": "EN2",
"type": "input",
"description": "Side 2 active-high enable for outputs B1, B2 and B3, internally pulled up to VDD2 so it can be left floating or tied to a logic level."
},
{
"number": "11",
"name": "B4",
"type": "input",
"description": "Side 2 digital input, passed to output A4 across the isolation barrier."
},
{
"number": "12",
"name": "B3",
"type": "output",
"description": "Side 2 digital output following input A3, driven to high impedance when EN2 is low."
},
{
"number": "13",
"name": "B2",
"type": "output",
"description": "Side 2 digital output following input A2, driven to high impedance when EN2 is low."
},
{
"number": "14",
"name": "B1",
"type": "output",
"description": "Side 2 digital output following input A1, driven to high impedance when EN2 is low."
},
{
"number": "15",
"name": "GND2",
"type": "power_in",
"description": "Side 2 ground, which must be externally connected to side 2 ground on narrow-body style packages."
},
{
"number": "16",
"name": "VDD2",
"type": "power_in",
"description": "Side 2 power supply, 2.375 V to 5.5 V recommended operating range, with a 0.1 µF bypass capacitor to GND2 placed close to the package."
}
],
"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+vision",
"consensus_model": "claude-opus-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The only pin table (page 29) is headed 'SOIC-16 Pin#'. The datasheet has no separate QSOP-16 pin tab; The table gives A3, A4, B3 and B4 as generic 'Digital I/O'. The Si8641 diagram on page 29 and Table ; Footnote 1 on page 29 says that for narrow-body devices GND pins 2, 8, 9 and 15 must all be external",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 46,
"cost_usd": 0.1149,
"at": "2026-10-27T07:56:48"
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"pages": 46,
"sha256": "032aeb8b1ade5e14",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
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"refuses_to_fabricate": true
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"metadata": {
"specs": {
"Manufacturer": "Skyworks Solutions",
"Package": "QSOP-16",
"Category": "Signal Isolation Devices",
"Pins": "16"
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"appearance": {
"housing": {
"quote": "4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.",
"page": 35,
"doc": "ds.pdf",
"material": "PC"
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"email": "[email protected]"
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