component
CH392T
Public Made by Adomby adom
WCH Jiangsu Qin Heng Ethernet Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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{
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"type": "component",
"slug": "ch392t",
"title": "CH392T",
"brief": "WCH Jiangsu Qin Heng Ethernet Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"component": {
"mpn": "CH392T",
"manufacturer": "WCH Jiangsu Qin Heng",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Interface",
"subcategory": "Ethernet Transceivers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618867019068420096",
"parts": {
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"footprint": "ch392t.kicad_mod",
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"model_3d_plain": "ch392t-etched.glb",
"model_3d_step": "ch392t-etched.step",
"model_3d_step_plain": "ch392t.step",
"lbr": "ch392t.lbr"
},
"distributor_links": {
"lcsc": "C39831290"
},
"distributor_check": {
"checked_at": "2026-10-20T23:47:01Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "RSTI",
"type": "input",
"description": "External reset input, active low; when low the chip is held in reset and after release it delays about 35 ms before normal operation."
},
{
"number": "2",
"name": "SEL",
"type": "input",
"description": "Communication interface select with internal pull-up: high selects the asynchronous UART, low selects the SPI interface, sampled at power-on reset."
},
{
"number": "3",
"name": "TXD",
"type": "output",
"description": "Asynchronous serial data output to the host MCU."
},
{
"number": "4",
"name": "RXD",
"type": "input",
"description": "Asynchronous serial data input from the host MCU, with internal pull-up resistor."
},
{
"number": "5",
"name": "SCS",
"type": "input",
"description": "SPI chip select input, active low."
},
{
"number": "6",
"name": "SCK",
"type": "input",
"description": "SPI clock input; the chip samples data on the rising edge and outputs on the falling edge (SPI mode 0 or 3)."
},
{
"number": "7",
"name": "SDO",
"type": "output",
"description": "SPI data output to the host MCU MISO line."
},
{
"number": "8",
"name": "SDI",
"type": "input",
"description": "SPI data input from the host MCU MOSI line."
},
{
"number": "9",
"name": "RXP",
"type": "passive",
"description": "Ethernet differential receive positive signal, connected to the magnetics/RJ45 port."
},
{
"number": "10",
"name": "RXN",
"type": "passive",
"description": "Ethernet differential receive negative signal, connected to the magnetics/RJ45 port."
},
{
"number": "11",
"name": "TXP",
"type": "passive",
"description": "Ethernet differential transmit positive signal, connected to the magnetics/RJ45 port."
},
{
"number": "12",
"name": "TXN",
"type": "passive",
"description": "Ethernet differential transmit negative signal, connected to the magnetics/RJ45 port."
},
{
"number": "13",
"name": "NC",
"type": "unconnected",
"description": "Reserved pin; leave floating (no connection)."
},
{
"number": "14",
"name": "VDD",
"type": "power_in",
"description": "3.3 V power supply voltage input."
},
{
"number": "15",
"name": "INT",
"type": "output",
"description": "Interrupt request output to the host MCU, active low."
},
{
"number": "16",
"name": "ACT",
"type": "output",
"description": "Drive pin for the Ethernet activity indicator LED."
},
{
"number": "17",
"name": "LINK",
"type": "output",
"description": "PHY link indicator drive pin, active low."
},
{
"number": "18",
"name": "GND",
"type": "power_in",
"description": "Chip ground."
},
{
"number": "19",
"name": "XI",
"type": "input",
"description": "Crystal oscillator input; an 8 MHz crystal is required for versions before 0x18, while 8 MHz or 16 MHz is accepted from version 0x18 onward."
},
{
"number": "20",
"name": "XO",
"type": "output",
"description": "Crystal oscillator output (datasheet table lists this pin as output; the description text calls it the input end of the oscillator)."
}
],
"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 pin table lists XO as type 输出 (output) but its description reads '晶体振荡的输入端' (crystal oscillator ; The datasheet classifies RXP/RXN/TXP/TXN only as 以太网信号 (Ethernet signal), with no explicit digital d; Crystal requirement depends on chip version: 8 MHz only before version 0x18; 8 MHz or 16 MHz from 0x",
"1/20 pins cited to the wrong page (name found elsewhere): ['20:XO@p2']"
],
"pages_sent": 28,
"cost_usd": 0.1545,
"at": "2026-10-20T23:43:34"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618867019068420096",
"pages": 28,
"sha256": "6e567c4f77a16da0",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
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"up": "Z",
"units": "mm",
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"extents_mm": [
6.4,
6.5,
1.2
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
"checked": "2026-10-20",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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"footprint_binding": "identity",
"sha256": "3748cfb2bf0952e2a7be40f0fcbb5d772fb3d47152d6c7f656594acf0cb6a6de",
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]
},
"metadata": {
"specs": {
"Manufacturer": "WCH Jiangsu Qin Heng",
"Package": "TSSOP-20",
"Category": "Interface",
"Pins": "20"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "6e567c4f77a16da08d32e55fdabe52d22d097396c432fb80f20e1796bd702579",
"rows": [
{
"name": "System supply voltage",
"symbol": "VDD",
"kind": "electrical",
"unit": "V",
"min": 3,
"typ": 3.3,
"max": 3.6,
"conditions": "",
"source_page": 23,
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},
{
"name": "GPIO low-level input voltage",
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"unit": "V",
"min": -0.3,
"typ": null,
"max": 0.9,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "GPIO high-level input voltage",
"symbol": "VIH",
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"unit": "V",
"min": 2,
"typ": null,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Low-level output voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.4,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Operating ambient temperature",
"symbol": "TA",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 85,
"conditions": "VDD=3.3V",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Storage ambient temperature (CH392T)",
"symbol": "TS",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 125,
"conditions": "CH392T",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Supply voltage (VDD to GND)",
"symbol": "VDD",
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"unit": "V",
"min": -0.3,
"typ": null,
"max": 3.9,
"conditions": "",
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},
{
"name": "Voltage on input or output pins",
"symbol": "VIO",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Chip default run current after power-on",
"symbol": "Iidle",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 19.4,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Chip run current after network initialization",
"symbol": "Iinit",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 23.7,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Chip current after network connection",
"symbol": "Ilink",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 23.5,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Current during Ethernet transmission",
"symbol": "Isend",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 40,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Current during Ethernet reception",
"symbol": "Irec",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 24,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Current in light sleep mode 1",
"symbol": "Isleep1",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 4.8,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Current in light sleep mode 2",
"symbol": "Isleep2",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 11.7,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Current in light sleep mode 3",
"symbol": "Isleep3",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 11.7,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
},
{
"name": "Current in deep sleep mode",
"symbol": "Istop",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 70,
"max": null,
"conditions": "",
"source_page": 23,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"ch392t"
],
"discovery_pitch": "CH392T (WCH Jiangsu Qin Heng) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
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"ch392t.step",
"ch392t.lbr",
"docs/hero.png",
"docs/ch392t-datasheet.pdf",
"viewers/symbol.html",
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"visibility": {
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}
}