component
USB3370B-EZK-TR
Public Made by Adomby adom
Microchip Tech Receivers & Transceivers, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "usb3370b-ezk-tr",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Receivers & Transceivers, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"logic ics",
"usb3370b-ezk-tr",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"usb3370b-ezk-tr.kicad_sym",
"usb3370b-ezk-tr.kicad_mod",
"usb3370b-ezk-tr.glb",
"usb3370b-ezk-tr.step",
"usb3370b-ezk-tr.lbr",
"docs/hero.png",
"docs/usb3370b-ezk-tr-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"usb3370b-ezk-tr-hero.glb",
"usb3370b-ezk-tr-hero.overlay.json",
"usb3370b-ezk-tr-etched.glb"
],
"component": {
"mpn": "USB3370B-EZK-TR",
"manufacturer": "Microchip Tech",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Logic ICs",
"subcategory": "Receivers & Transceivers",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6581e7a87ccdecd00734a9b9086efbd5.pdf",
"parts": {
"symbol": "usb3370b-ezk-tr.kicad_sym",
"footprint": "usb3370b-ezk-tr.kicad_mod",
"model_3d": "usb3370b-ezk-tr-hero.glb",
"model_3d_plain": "usb3370b-ezk-tr-etched.glb",
"model_3d_step": "usb3370b-ezk-tr-etched.step",
"model_3d_step_plain": "usb3370b-ezk-tr.step",
"lbr": "usb3370b-ezk-tr.lbr"
},
"distributor_links": {
"lcsc": "C622623",
"digikey": "USB3370B-EZK-TR-ND",
"mouser": "886-USB3370B-EZK-TR"
},
"distributor_check": {
"checked_at": "2026-10-28T16:14:20Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "USB3370B-EZK-TR-ND",
"status": "found"
},
"mouser": {
"pn": "886-USB3370B-EZK-TR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "DATA[0]",
"type": "bidirectional",
"description": "ULPI bidirectional data bus bit 0 (LSB), CMOS I/O; in UART mode it carries TXD to the DM pin."
},
{
"number": "2",
"name": "VDDIO",
"type": "power_in",
"description": "ULPI interface supply voltage, specified at 1.8V to 3.3V."
},
{
"number": "3",
"name": "RBIAS",
"type": "passive",
"description": "Bias resistor pin requiring a 10kΩ (±1%) resistor to ground placed as close as possible to the device, with nominal voltage of 0.8V during ULPI operation."
},
{
"number": "4",
"name": "DM",
"type": "bidirectional",
"description": "D- pin of the USB cable, an analog I/O."
},
{
"number": "5",
"name": "DP",
"type": "bidirectional",
"description": "D+ pin of the USB cable, an analog I/O."
},
{
"number": "6",
"name": "EXTVBUS",
"type": "input",
"description": "External Vbus detect input, tolerant to 0 to 5.0V, connected to the fault output of an external USB power switch or Vbus Valid comparator and internally pulled down."
},
{
"number": "7",
"name": "ID",
"type": "input",
"description": "USB ID input, connected to VDD33 for device, grounded for host, and to the USB connector for OTG applications."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the device."
},
{
"number": "9",
"name": "NC",
"type": "unconnected",
"description": "No connect; leave pin floating."
},
{
"number": "10",
"name": "NC",
"type": "unconnected",
"description": "No connect; leave pin floating."
},
{
"number": "11",
"name": "VBAT",
"type": "power_in",
"description": "Regulator input supplied from 3.0V to 5.5V that feeds the integrated 3.3V LDO and must never be connected to VDD33."
},
{
"number": "12",
"name": "CPEN_N",
"type": "output",
"description": "Open-drain external 5V supply enable output, active low, tri-stated on power-on reset and tolerant to 5.5V maximum."
},
{
"number": "13",
"name": "VBUS",
"type": "power_in",
"description": "Analog pin for VBUS comparator inputs and VBUS pulsing during session request, requiring an external resistor RVBUS to the USB connector and tolerant to 30V with that resistor."
},
{
"number": "14",
"name": "VDD33",
"type": "power_out",
"description": "3.3V regulator output requiring a 1.0uF (<1 ohm ESR) bypass capacitor to ground placed close to the device, with 3.0V to 3.6V range."
},
{
"number": "15",
"name": "REFCLK",
"type": "input",
"description": "Reference clock or XI crystal input in ULPI Clock Output mode, and 60MHz ULPI clock input in ULPI Clock Input mode, accepting 0 to 3.6V drive."
},
{
"number": "16",
"name": "XO",
"type": "output",
"description": "Crystal output pin that should be left floating when an external clock is applied on XI."
},
{
"number": "17",
"name": "RESETB",
"type": "input",
"description": "Active-low reset and suspend input that disables both regulators when low and resets the ULPI registers when asserted for at least 1 microsecond."
},
{
"number": "18",
"name": "VDD18",
"type": "power_out",
"description": "1.8V regulator output requiring a 1.0uF (<1 ohm ESR) bypass capacitor to ground placed close to the device, with 1.6V to 2.0V range."
},
{
"number": "19",
"name": "DIR",
"type": "output",
"description": "Data bus direction output; driven high when the PHY has data for the Link and low when it monitors the bus for commands."
},
{
"number": "20",
"name": "STP",
"type": "input",
"description": "Active-high stop input asserted by the Link for one clock cycle to stop the current data stream on the bus."
},
{
"number": "21",
"name": "NXT",
"type": "output",
"description": "Active-high next output asserted by the PHY to throttle data, indicating when the current byte has been accepted."
},
{
"number": "22",
"name": "VDDIO",
"type": "power_in",
"description": "ULPI interface supply voltage, specified at 1.8V to 3.3V."
},
{
"number": "23",
"name": "DATA[7]",
"type": "bidirectional",
"description": "ULPI bidirectional data bus bit 7 (MSB), CMOS I/O."
},
{
"number": "24",
"name": "DATA[6]",
"type": "bidirectional",
"description": "ULPI bidirectional data bus bit 6, CMOS I/O."
},
{
"number": "25",
"name": "DATA[5]",
"type": "bidirectional",
"description": "ULPI bidirectional data bus bit 5, CMOS I/O."
},
{
"number": "26",
"name": "DATA[4]",
"type": "bidirectional",
"description": "ULPI bidirectional data bus bit 4, CMOS I/O."
},
{
"number": "27",
"name": "CLKOUT",
"type": "output",
"description": "60MHz ULPI clock output in ULPI Clock Output mode, driven synchronous to all ULPI signals, and connected to VDDIO to select ULPI Clock Input mode."
},
{
"number": "28",
"name": "DATA[3]",
"type": "bidirectional",
"description": "ULPI bidirectional data bus bit 3, CMOS I/O."
},
{
"number": "29",
"name": "NC",
"type": "unconnected",
"description": "No connect; leave pin floating."
},
{
"number": "30",
"name": "VDDIO",
"type": "power_in",
"description": "ULPI interface supply voltage, specified at 1.8V to 3.3V."
},
{
"number": "31",
"name": "DATA[2]",
"type": "bidirectional",
"description": "ULPI bidirectional data bus bit 2, CMOS I/O."
},
{
"number": "32",
"name": "DATA[1]",
"type": "bidirectional",
"description": "ULPI bidirectional data bus bit 1, CMOS I/O."
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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 gives only a 32-pin QFN 5x5 mm pinout; the -EZK-TR ordering suffix is not itemized, so",
"1/33 pin names appear NOWHERE in the datasheet text: ['16:XO@p7']"
],
"pages_sent": 11,
"cost_usd": 0.0285,
"at": "2026-10-28T16:14:05"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/6581e7a87ccdecd00734a9b9086efbd5.pdf",
"pages": 75,
"sha256": "df0f7f83b17ead20",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "usb3370b-ezk-tr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5.0,
5.0,
0.875
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "usb3370b-ezk-tr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5.0,
5.0,
0.875
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "475d55b00d3fccbc1acfc2b5440ca9935126197a51b53eafaf87774f2d9bc89e",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}