component
MCP2021AT-500E
Public Made by Adomby adom
Microchip Tech LIN Transceivers, DFN-8-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "mcp2021at-500e",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech LIN Transceivers, DFN-8-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"communication interface chip-uart-485-232",
"mcp2021at-500e",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"mcp2021at-500e.kicad_sym",
"mcp2021at-500e.kicad_mod",
"mcp2021at-500e.glb",
"mcp2021at-500e.step",
"mcp2021at-500e.lbr",
"docs/hero.png",
"docs/mcp2021at-500e-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"mcp2021at-500e-hero.glb",
"mcp2021at-500e-hero.overlay.json",
"mcp2021at-500e-etched.glb"
],
"component": {
"mpn": "MCP2021AT-500E",
"manufacturer": "Microchip Tech",
"package": "DFN-8-EP(4x4)",
"pin_count": 9,
"category": "Communication Interface Chip/UART/485/232",
"subcategory": "LIN Transceivers",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/27d9c2703e9054c7ae306c444658a6e9.pdf",
"parts": {
"symbol": "mcp2021at-500e.kicad_sym",
"footprint": "mcp2021at-500e.kicad_mod",
"model_3d": "mcp2021at-500e-hero.glb",
"model_3d_plain": "mcp2021at-500e-etched.glb",
"model_3d_step": "mcp2021at-500e-etched.step",
"model_3d_step_plain": "mcp2021at-500e.step",
"lbr": "mcp2021at-500e.lbr"
},
"distributor_links": {
"lcsc": "C623163"
},
"distributor_check": {
"checked_at": "2026-10-30T12:04:52Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "RXD",
"type": "output",
"description": "Receive Data Output, a standard CMOS output that follows the state of the LBUS pin."
},
{
"number": "2",
"name": "CS/LWAKE",
"type": "input",
"description": "Chip Select and Local Wake-up Input (TTL level, high-voltage tolerant) that controls device state transitions, with internal pull-down of ~600 kΩ when high and ~300 kΩ when low."
},
{
"number": "3",
"name": "VREG",
"type": "power_out",
"description": "Voltage regulator output giving +5.0V or +3.3V at 70 mA regulated voltage."
},
{
"number": "4",
"name": "TXD",
"type": "input",
"description": "Transmit Data Input (TTL level, HV-compliant up to 30V, adaptive pull-up to ~4.2V) that drives the LBUS pin low (dominant) when low."
},
{
"number": "5",
"name": "VSS",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "6",
"name": "LBUS",
"type": "bidirectional",
"description": "LIN Bus pin, a bidirectional open-collector interface with current limitation and controlled slopes, controlled by TXD."
},
{
"number": "7",
"name": "VBB",
"type": "power_in",
"description": "Battery positive supply voltage pin, with an external series diode to prevent reverse powering."
},
{
"number": "8",
"name": "FAULT/TXE",
"type": "bidirectional",
"description": "Fault Detect Output (HV-tolerant open-drain up to 30V) / Transmitter Enable Input, with Transmitter Off mode entered when low; a 10 kΩ external pull-up is recommended."
},
{
"number": "9",
"name": "EP",
"type": "passive",
"description": "Exposed thermal pad."
}
],
"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 datasheet does not state what the exposed pad should be connected to (e.g. VSS). EP is listed as; MPN suffix -500E with 'MCP2021AT' implies the 5.0V regulator, 8-lead DFN (MD) tape and reel; the DFN"
],
"pages_sent": 28,
"cost_usd": 0.0536,
"at": "2026-10-30T12:04:37"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/27d9c2703e9054c7ae306c444658a6e9.pdf",
"pages": 48,
"sha256": "3c5e8b3bb6f80ae5",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 9,
"described": 9,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
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"origin": "footprint origin = pad-pattern centre",
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"sha256": "4672964215aa4510e5189d958d9ad3e5259af86a4b80262051b78f0663c358ef",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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"sha256": "21b5f4e9bde8ddc28d76f4784c7e515d048971384124e980dda5bb8793ea8aa6",
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}