component
SI8631BC-B-IS1
Public Made by Adomby adom
Skyworks Solutions Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "SI8631BC-B-IS1",
"brief": "Skyworks Solutions Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"component": {
"mpn": "SI8631BC-B-IS1",
"manufacturer": "Skyworks Solutions",
"package": "SOIC-16",
"pin_count": 16,
"category": "Signal Isolation Devices",
"subcategory": "Digital Isolators",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3600dc1f9a903d327d2958537fc56154.pdf",
"parts": {
"symbol": "si8631bc-b-is1.kicad_sym",
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"lbr": "si8631bc-b-is1.lbr"
},
"distributor_links": {
"lcsc": "C7315735",
"digikey": "336-2076-5-ND",
"mouser": "634-SI8631BC-B-IS1"
},
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"source": "Component Ocean /api/assign-pns",
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"status": "found",
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},
"pins": [
{
"number": "1",
"name": "VDD1",
"type": "power_in",
"description": "Side 1 power supply, operating range 2.5-5.5 V, requires a 0.1 µF bypass capacitor to GND1."
},
{
"number": "2",
"name": "GND1",
"type": "power_in",
"description": "Side 1 ground; on narrow-body devices it 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."
},
{
"number": "6",
"name": "NC",
"type": "unconnected",
"description": "No connect; not internally connected and can be left floating, tied to VDD or tied to GND."
},
{
"number": "7",
"name": "EN1",
"type": "input",
"description": "Side 1 active-high enable (EN1 on Si8631; NC on Si8630/35); can be left NC, but should be tied to a logic level in noisy environments."
},
{
"number": "8",
"name": "GND1",
"type": "power_in",
"description": "Side 1 ground; on narrow-body devices it must be externally connected to ground."
},
{
"number": "9",
"name": "GND2",
"type": "power_in",
"description": "Side 2 ground; on narrow-body devices it must be externally connected to ground."
},
{
"number": "10",
"name": "EN2",
"type": "input",
"description": "Side 2 active-high enable (NC on Si8635); output is high-impedance when low."
},
{
"number": "11",
"name": "NC",
"type": "unconnected",
"description": "No connect; not internally connected and can be left floating, tied to VDD or tied to GND."
},
{
"number": "12",
"name": "B3",
"type": "bidirectional",
"description": "Side 2 digital input or output."
},
{
"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 it 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, requires a 0.1 µF bypass capacitor to GND2."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
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"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 lists A3 and B3 as 'Digital I/O' for all variants. The ordering guide says the Si8631 ; The pin table shows the Si8631 pin 7 as EN1/NC and the figure shows EN1 on the Si8631. I used EN1 fo"
],
"pages_sent": 18,
"cost_usd": 0.1618,
"at": "2026-10-31T02:13:26"
},
"datasheet": {
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"pages": 38,
"sha256": "c69ba44cca206b60",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 16,
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"file": "si8631bc-b-is1.step",
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"seat": "z = 0",
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"package_dims": {
"package_code": "NB SOIC-16 (SO-16, JEDEC MS-012 AC)",
"source_page": 31,
"D": {
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"E1": {
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"E": {
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"A": {
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"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
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"Package": "SOIC-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.",
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"rows": [
{
"name": "VDD Undervoltage Threshold rising",
"symbol": "VDDUV+",
"kind": "electrical",
"unit": "V",
"min": 1.95,
"typ": 2.24,
"max": 2.375,
"conditions": "VDD1, VDD2 rising",
"source_page": 11,
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{
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"name": "Positive-Going Input Threshold",
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{
"name": "Negative-Going Input Threshold",
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{
"name": "Input Hysteresis",
"symbol": "VHYS",
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"min": 0.38,
"typ": 0.44,
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{
"name": "High Level Input Voltage",
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"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": null,
"conditions": "",
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{
"name": "Low Level Input Voltage",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "",
"source_page": 11,
"source": "datasheet"
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{
"name": "High Level Output Voltage (5 V)",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 4.8,
"max": null,
"conditions": "Ioh = –4 mA; min printed as VDD1, VDD2 – 0.4; VDD = 5 V ±10%",
"source_page": 11,
"source": "datasheet"
},
{
"name": "High Level Output Voltage (3.3 V)",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 3.1,
"max": null,
"conditions": "Ioh = –4 mA; min printed as VDD1, VDD2 – 0.4; VDD = 3.3 V ±10%",
"source_page": 15,
"source": "datasheet"
},
{
"name": "High Level Output Voltage (2.5 V)",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 2.3,
"max": null,
"conditions": "Ioh = –4 mA; min printed as VDD1, VDD2 – 0.4; VDD = 2.5 V ±5%",
"source_page": 18,
"source": "datasheet"
},
{
"name": "Low Level Output Voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.2,
"max": 0.4,
"conditions": "Iol = 4 mA",
"source_page": 11,
"source": "datasheet"
},
{
"name": "Input Leakage Current (Si863xxA/B/C/D)",
"symbol": "IL",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 10,
"conditions": "printed as ±10",
"source_page": 11,
"source": "datasheet"
},
{
"name": "Enable Input Current (Si863xxA/B/C/D)",
"symbol": "IENH, IENL",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 2,
"max": null,
"conditions": "VENx = VIH or VIL",
"source_page": 11,
"source": "datasheet"
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{
"name": "DC Supply Current VDD1, VI = 0 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 1.3,
"max": 2.1,
"conditions": "Si8631Bx; VI = 0(Bx); VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "DC Supply Current VDD2, VI = 0 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 1.7,
"max": 2.7,
"conditions": "Si8631Bx; VI = 0(Bx); VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "DC Supply Current VDD1, VI = 1 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 3.9,
"max": 5.9,
"conditions": "Si8631Bx; VI = 1(Bx); VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "DC Supply Current VDD2, VI = 1 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 3,
"max": 4.5,
"conditions": "Si8631Bx; VI = 1(Bx); VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "1 Mbps Supply Current VDD1 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 2.7,
"max": 3.8,
"conditions": "Si8631Bx; 500 kHz square wave, CI = 15 pF; VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "1 Mbps Supply Current VDD2 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 2.6,
"max": 3.6,
"conditions": "Si8631Bx; 500 kHz square wave, CI = 15 pF; VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "10 Mbps Supply Current VDD1 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 3,
"max": 4.2,
"conditions": "Si8631Bx; 5 MHz square wave, CI = 15 pF; VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "10 Mbps Supply Current VDD2 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 3.1,
"max": 4.4,
"conditions": "Si8631Bx; 5 MHz square wave, CI = 15 pF; VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "100 Mbps Supply Current VDD1 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 6.6,
"max": 8.8,
"conditions": "Si8631Bx; 50 MHz square wave, CI = 15 pF; VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "100 Mbps Supply Current VDD2 (5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 9.9,
"max": 13.4,
"conditions": "Si8631Bx; 50 MHz square wave, CI = 15 pF; VDD = 5 V ±10%",
"source_page": 12,
"source": "datasheet"
},
{
"name": "100 Mbps Supply Current VDD1 (3.3 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 5.2,
"max": 7,
"conditions": "Si8631Bx; 50 MHz square wave, CI = 15 pF; VDD = 3.3 V ±10%",
"source_page": 16,
"source": "datasheet"
},
{
"name": "100 Mbps Supply Current VDD2 (3.3 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 7.3,
"max": 9.8,
"conditions": "Si8631Bx; 50 MHz square wave, CI = 15 pF; VDD = 3.3 V ±10%",
"source_page": 16,
"source": "datasheet"
},
{
"name": "100 Mbps Supply Current VDD1 (2.5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 4.5,
"max": 6.1,
"conditions": "Si8631Bx; 50 MHz square wave, CI = 15 pF; VDD = 2.5 V ±5%",
"source_page": 19,
"source": "datasheet"
},
{
"name": "100 Mbps Supply Current VDD2 (2.5 V)",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 6.1,
"max": 8.2,
"conditions": "Si8631Bx; 50 MHz square wave, CI = 15 pF; VDD = 2.5 V ±5%",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Maximum Data Rate",
"symbol": "",
"kind": "timing",
"unit": "Mbps",
"min": 0,
"typ": null,
"max": 150,
"conditions": "Si863xBx, Ex",
"source_page": 12,
"source": "datasheet"
},
{
"name": "Minimum Pulse Width",
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"kind": "timing",
"unit": "ns",
"min": null,
"typ": null,
"max": 5,
"conditions": "",
"source_page": 13,
"source": "datasheet"
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{
"name": "Propagation Delay (5 V and 3.3 V)",
"symbol": "tPHL, tPLH",
"kind": "timing",
"unit": "ns",
"min": 5,
"typ": 8,
"max": 13,
"conditions": "See Figure 4.2; VDD = 5 V ±10% or 3.3 V ±10%",
"source_page": 13,
"source": "datasheet"
},
{
"name": "Propagation Delay (2.5 V)",
"symbol": "tPHL, tPLH",
"kind": "timing",
"unit": "ns",
"min": 5,
"typ": 8,
"max": 14,
"conditions": "See Figure 4.2; VDD = 2.5 V ±5%",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Pulse Width Distortion (5 V and 3.3 V)",
"symbol": "PWD",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 0.2,
"max": 4.5,
"conditions": "|tPLH – tPHL|; See Figure 4.2; VDD = 5 V ±10% or 3.3 V ±10%",
"source_page": 13,
"source": "datasheet"
},
{
"name": "Pulse Width Distortion (2.5 V)",
"symbol": "PWD",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 0.2,
"max": 5,
"conditions": "|tPLH -tPHL|; See Figure 4.2; VDD = 2.5 V ±5%",
"source_page": 19,
"source": "datasheet"
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