component
CH444G
Public Made by Adomby adom
WCH Jiangsu Qin Heng Analog Switches, Multiplexers, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"title": "CH444G",
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"version": "0.1.0",
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"component": {
"mpn": "CH444G",
"manufacturer": "WCH Jiangsu Qin Heng",
"package": "SOP-16",
"pin_count": 16,
"category": "Interface",
"subcategory": "Analog Switches, Multiplexers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588882176397463552",
"parts": {
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"footprint": "ch444g.kicad_mod",
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"model_3d_step": "ch444g-etched.step",
"model_3d_step_plain": "ch444g.step",
"lbr": "ch444g.lbr"
},
"distributor_links": {
"lcsc": "C86413"
},
"distributor_check": {
"checked_at": "2026-10-09T16:16:24Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "EN#",
"type": "input",
"description": "Global enable input, active low: when EN# is high, all analog switches are disconnected regardless of IN1/IN0."
},
{
"number": "2",
"name": "IN1",
"type": "input",
"description": "Select input (high bit) for the 4:1 analog switches; with IN1&IN0 at 00, 01, 10 or 11 the 1#, 2#, 3# or 4# ports are selected."
},
{
"number": "3",
"name": "S4A",
"type": "passive",
"description": "Port 4 of the 4:1 analog switch A, selected when IN1&IN0 = 11; the recommended analog signal range is 0 to 2.8 V at VCC = 5 V."
},
{
"number": "4",
"name": "S3A",
"type": "passive",
"description": "Port 3 of the 4:1 analog switch A, selected when IN1&IN0 = 10."
},
{
"number": "5",
"name": "S2A",
"type": "passive",
"description": "Port 2 of the 4:1 analog switch A, selected when IN1&IN0 = 01."
},
{
"number": "6",
"name": "S1A",
"type": "passive",
"description": "Port 1 of the 4:1 analog switch A, selected when IN1&IN0 = 00."
},
{
"number": "7",
"name": "YA",
"type": "passive",
"description": "Common terminal of the 4:1 analog switch A, connected to one of S1A-S4A as selected by IN1/IN0 when EN# is low."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Common ground and reference for the digital signals; the datasheet requires a good ground connection to limit interference."
},
{
"number": "9",
"name": "YB",
"type": "passive",
"description": "Common terminal of the 4:1 analog switch B, connected to one of S1B-S4B as selected by IN1/IN0 when EN# is low."
},
{
"number": "10",
"name": "S1B",
"type": "passive",
"description": "Port 1 of the 4:1 analog switch B, selected when IN1&IN0 = 00."
},
{
"number": "11",
"name": "S2B",
"type": "passive",
"description": "Port 2 of the 4:1 analog switch B, selected when IN1&IN0 = 01."
},
{
"number": "12",
"name": "S3B",
"type": "passive",
"description": "Port 3 of the 4:1 analog switch B, selected when IN1&IN0 = 10."
},
{
"number": "13",
"name": "S4B",
"type": "passive",
"description": "Port 4 of the 4:1 analog switch B, selected when IN1&IN0 = 11; the recommended analog signal range is 0 to 2.8 V at VCC = 5 V."
},
{
"number": "14",
"name": "IN0",
"type": "input",
"description": "Select input (low bit) for the 4:1 analog switches, used together with IN1 to choose ports 1# to 4#."
},
{
"number": "15",
"name": "NC",
"type": "unconnected",
"description": "Reserved pin; the datasheet states it must not be connected."
},
{
"number": "16",
"name": "VCC",
"type": "power_in",
"description": "Positive power supply; the 5 V part is rated for 4.0 V to 5.5 V operation with an absolute maximum of 6.5 V."
}
],
"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 datasheet lists CH444G and CH444P pin numbers side by side in one table (section 4.4). The CH444; The schema has no field for headline specs, so the supply and operating limits were only referenced "
],
"pages_sent": 16,
"cost_usd": 0.0801,
"at": "2026-10-09T16:14:00"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588882176397463552",
"pages": 16,
"sha256": "19c56b918901f689",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
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"seat": "z = 0",
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"footprint_binding": "identity",
"sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
"checked": "2026-10-09",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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"sha256": "069ca2401e5583e8d34a53c35d43b0d4b3679d155fec273fd033c772e5c501b4",
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]
},
"metadata": {
"specs": {
"Manufacturer": "WCH Jiangsu Qin Heng",
"Package": "SOP-16",
"Category": "Interface",
"Pins": "16"
}
},
"variants": [],
"sections": [
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"discovery_triggers": [
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"discovery_pitch": "CH444G (WCH Jiangsu Qin Heng) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
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