USB5744T

{
  "schema_version": 1,
  "type": "component",
  "slug": "usb5744t",
  "title": "USB5744T",
  "brief": "Microchip Tech USB ICs, VQFN-56-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "usb5744t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "USB5744T",
    "manufacturer": "Microchip Tech",
    "package": "VQFN-56-EP(7x7)",
    "pin_count": 57,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "USB ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6e6a936a5f7ee14edc6fc69fb50256d1.pdf",
    "parts": {
      "symbol": "usb5744t.kicad_sym",
      "footprint": "usb5744t.kicad_mod",
      "model_3d": "usb5744t-hero.glb",
      "model_3d_plain": "usb5744t-etched.glb",
      "model_3d_step": "usb5744t-etched.step",
      "model_3d_step_plain": "usb5744t.step",
      "lbr": "usb5744t.lbr"
    },
    "distributor_links": {
      "lcsc": "C626714"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:22:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "USB2DN_DP1/PRT_DIS_P1",
        "type": "bidirectional",
        "description": "USB 2.0 downstream port 1 data plus (D+), also the port 1 D+ disable configuration strap latched at reset (tie to 3.3 V together with PRT_DIS_M1 to disable the port); reset state PD-15k."
      },
      {
        "number": "2",
        "name": "USB2DN_DM1/PRT_DIS_M1",
        "type": "bidirectional",
        "description": "USB 2.0 downstream port 1 data minus (D-), also the port 1 D- disable configuration strap latched at reset; reset state PD-15k."
      },
      {
        "number": "3",
        "name": "USB3DN_TXDP1",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 1 SuperSpeed transmit data plus; leave floating if unused."
      },
      {
        "number": "4",
        "name": "USB3DN_TXDM1",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 1 SuperSpeed transmit data minus; leave floating if unused."
      },
      {
        "number": "5",
        "name": "VDD12",
        "type": "power_in",
        "description": "+1.2 V core power."
      },
      {
        "number": "6",
        "name": "USB3DN_RXDP1",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 1 SuperSpeed receive data plus; leave floating if unused."
      },
      {
        "number": "7",
        "name": "USB3DN_RXDM1",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 1 SuperSpeed receive data minus; leave floating if unused."
      },
      {
        "number": "8",
        "name": "USB2DN_DP2/PRT_DIS_P2",
        "type": "bidirectional",
        "description": "USB 2.0 downstream port 2 data plus (D+), also the port 2 D+ disable configuration strap; reset state PD-15k."
      },
      {
        "number": "9",
        "name": "USB2DN_DM2/PRT_DIS_M2",
        "type": "bidirectional",
        "description": "USB 2.0 downstream port 2 data minus (D-), also the port 2 D- disable configuration strap; reset state PD-15k."
      },
      {
        "number": "10",
        "name": "USB3DN_TXDP2",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 2 SuperSpeed transmit data plus; leave floating if unused."
      },
      {
        "number": "11",
        "name": "USB3DN_TXDM2",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 2 SuperSpeed transmit data minus; leave floating if unused."
      },
      {
        "number": "12",
        "name": "VDD12",
        "type": "power_in",
        "description": "+1.2 V core power."
      },
      {
        "number": "13",
        "name": "USB3DN_RXDP2",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 2 SuperSpeed receive data plus; leave floating if unused."
      },
      {
        "number": "14",
        "name": "USB3DN_RXDM2",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 2 SuperSpeed receive data minus; leave floating if unused."
      },
      {
        "number": "15",
        "name": "VDD12",
        "type": "power_in",
        "description": "+1.2 V core power."
      },
      {
        "number": "16",
        "name": "VDD33",
        "type": "power_in",
        "description": "+3.3 V power and internal regulator input."
      },
      {
        "number": "17",
        "name": "USB2DN_DP3/PRT_DIS_P3",
        "type": "bidirectional",
        "description": "USB 2.0 downstream port 3 data plus (D+), also the port 3 D+ disable configuration strap; reset state PD-15k."
      },
      {
        "number": "18",
        "name": "USB2DN_DM3/PRT_DIS_M3",
        "type": "bidirectional",
        "description": "USB 2.0 downstream port 3 data minus (D-), also the port 3 D- disable configuration strap; reset state PD-15k."
      },
      {
        "number": "19",
        "name": "USB3DN_TXDP3",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 3 SuperSpeed transmit data plus; leave floating if unused."
      },
      {
        "number": "20",
        "name": "USB3DN_TXDM3",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 3 SuperSpeed transmit data minus; leave floating if unused."
      },
      {
        "number": "21",
        "name": "VDD12",
        "type": "power_in",
        "description": "+1.2 V core power."
      },
      {
        "number": "22",
        "name": "USB3DN_RXDP3",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 3 SuperSpeed receive data plus; leave floating if unused."
      },
      {
        "number": "23",
        "name": "USB3DN_RXDM3",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 3 SuperSpeed receive data minus; leave floating if unused."
      },
      {
        "number": "24",
        "name": "USB2DN_DP4/PRT_DIS_P4",
        "type": "bidirectional",
        "description": "USB 2.0 downstream port 4 data plus (D+), also the port 4 D+ disable configuration strap; reset state PD-15k."
      },
      {
        "number": "25",
        "name": "USB2DN_DM4/PRT_DIS_M4",
        "type": "bidirectional",
        "description": "USB 2.0 downstream port 4 data minus (D-), also the port 4 D- disable configuration strap; reset state PD-15k."
      },
      {
        "number": "26",
        "name": "USB3DN_TXDP4",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 4 SuperSpeed transmit data plus; leave floating if unused."
      },
      {
        "number": "27",
        "name": "USB3DN_TXDM4",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 4 SuperSpeed transmit data minus; leave floating if unused."
      },
      {
        "number": "28",
        "name": "VDD12",
        "type": "power_in",
        "description": "+1.2 V core power."
      },
      {
        "number": "29",
        "name": "USB3DN_RXDP4",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 4 SuperSpeed receive data plus; leave floating if unused."
      },
      {
        "number": "30",
        "name": "USB3DN_RXDM4",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 downstream port 4 SuperSpeed receive data minus; leave floating if unused."
      },
      {
        "number": "31",
        "name": "VDD33",
        "type": "power_in",
        "description": "+3.3 V power and internal regulator input."
      },
      {
        "number": "32",
        "name": "PRT_CTL4/GANG_PWR",
        "type": "bidirectional",
        "description": "Port 4 power enable output / overcurrent sense input (internal pull-up; leave floating if unused); when pulled high enables gang mode and serves as the gang power pin."
      },
      {
        "number": "33",
        "name": "VDD12",
        "type": "power_in",
        "description": "+1.2 V core power."
      },
      {
        "number": "34",
        "name": "PRT_CTL3",
        "type": "bidirectional",
        "description": "Port 3 power enable output (active high) / overcurrent sense input from an external current monitor; leave floating if unused."
      },
      {
        "number": "35",
        "name": "PRT_CTL2",
        "type": "bidirectional",
        "description": "Port 2 power enable output (active high) / overcurrent sense input from an external current monitor; leave floating if unused."
      },
      {
        "number": "36",
        "name": "PRT_CTL1",
        "type": "bidirectional",
        "description": "Port 1 power enable output (active high) / overcurrent sense input from an external current monitor; leave floating if unused."
      },
      {
        "number": "37",
        "name": "VBUS_DET",
        "type": "input",
        "description": "Detects upstream bus power; connect to upstream VBUS through a 50 k by 100 k resistor divider to provide 3.3 V (also usable as GPIO16)."
      },
      {
        "number": "38",
        "name": "SPI_CLK/SMCLK",
        "type": "bidirectional",
        "description": "SPI clock output to the serial ROM in SPI mode, or SMBus clock (open-drain) in SMBus slave mode; also GPIO4; a 10 k pull-up selects SMBus mode."
      },
      {
        "number": "39",
        "name": "SPI_DO/SMDAT",
        "type": "bidirectional",
        "description": "SPI data output in SPI mode, or SMBus data in SMBus slave mode; also GPIO5; a 10 k pull-up selects SMBus mode."
      },
      {
        "number": "40",
        "name": "SPI_DI/CFG_BC_EN",
        "type": "bidirectional",
        "description": "SPI data input in SPI mode (also GPIO9), or the battery charging configuration strap (CFG_BC_EN) in SMBus mode, set by an external resistor."
      },
      {
        "number": "41",
        "name": "SPI_CE_N/CFG_NON_REM",
        "type": "bidirectional",
        "description": "Active-low SPI chip enable output in SPI mode (also GPIO7), or the non-removable port configuration strap (CFG_NON_REM) in SMBus mode."
      },
      {
        "number": "42",
        "name": "RESET_N",
        "type": "input",
        "description": "Active-low Schmitt-trigger reset input that puts the device into Reset (Standby) Mode."
      },
      {
        "number": "43",
        "name": "VDD12",
        "type": "power_in",
        "description": "+1.2 V core power."
      },
      {
        "number": "44",
        "name": "VDD33",
        "type": "power_in",
        "description": "+3.3 V power and internal regulator input."
      },
      {
        "number": "45",
        "name": "USB2UP_DP",
        "type": "bidirectional",
        "description": "USB 2.0 upstream data plus (D+)."
      },
      {
        "number": "46",
        "name": "USB2UP_DM",
        "type": "bidirectional",
        "description": "USB 2.0 upstream data minus (D-)."
      },
      {
        "number": "47",
        "name": "USB3UP_TXDP",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 upstream SuperSpeed transmit data plus."
      },
      {
        "number": "48",
        "name": "USB3UP_TXDM",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 upstream SuperSpeed transmit data minus."
      },
      {
        "number": "49",
        "name": "VDD12",
        "type": "power_in",
        "description": "+1.2 V core power."
      },
      {
        "number": "50",
        "name": "USB3UP_RXDP",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 upstream SuperSpeed receive data plus."
      },
      {
        "number": "51",
        "name": "USB3UP_RXDM",
        "type": "bidirectional",
        "description": "USB 3.2 Gen 1 upstream SuperSpeed receive data minus."
      },
      {
        "number": "52",
        "name": "ATEST",
        "type": "input",
        "description": "Analog test pin that must always be connected to ground."
      },
      {
        "number": "53",
        "name": "XTALO",
        "type": "output",
        "description": "External 25 MHz crystal output; leave unconnected when driving XTALI/CLK_IN with a single-ended clock."
      },
      {
        "number": "54",
        "name": "XTALI/CLK_IN",
        "type": "input",
        "description": "External 25 MHz crystal input or single-ended 25 MHz reference clock input."
      },
      {
        "number": "55",
        "name": "VDD33",
        "type": "power_in",
        "description": "+3.3 V power and internal regulator input."
      },
      {
        "number": "56",
        "name": "RBIAS",
        "type": "passive",
        "description": "A 12.0 k (+/-1%) resistor is attached from ground to this pin to set the transceiver's internal bias settings."
      },
      {
        "number": "57",
        "name": "VSS",
        "type": "power_in",
        "description": "Exposed pad, common ground; must be connected to the ground plane with a via array."
      }
    ],
    "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: Exposed pad has no printed pin number; '57' is an assigned placeholder for the VSS EP.; Pin types (bidirectional, input, passive) were inferred from buffer types (IO-U, AI, I, IS, etc.); t; The datasheet only covers the 56-VQFN package. Ordering-suffix 'T' (tape and reel) is not in the sup",
          "23/57 pins cited to the wrong page (name found elsewhere): ['21:VDD12@p14', '28:VDD12@p14', '31:VDD33@p14', '32:PRT_CTL4/GANG_PWR@p12']"
        ],
        "pages_sent": 28,
        "cost_usd": 0.2583,
        "at": "2026-10-27T01:22:09"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6e6a936a5f7ee14edc6fc69fb50256d1.pdf",
        "pages": 51,
        "sha256": "b000b915ca780ce6",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 57,
        "described": 57,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "usb5744t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.885
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b42d9b0c7a8d55564f4e9bb74be3ab877d958a268411c07a496787496cfb1b99",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "usb5744t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.885
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "99e20615057c8c035d89b2e60c291385825c654c5e858477e066c1515e202030",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "VQFN-56-EP(7x7)",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "57"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b000b915ca780ce63a73e311dff7e525280dfe2f037e9fc6d14e8e73b993ff6a",
      "rows": [
        {
          "name": "+1.2 V Supply Voltage (abs max)",
          "symbol": "VDD12",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 1.32,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "+3.3 V Supply Voltage (abs max)",
          "symbol": "VDD33",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 4.6,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Voltage on input signal pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 4.6,
          "conditions": "with respect to ground",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Positive voltage on XTALI/CLK_IN",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3.63,
          "conditions": "with respect to ground",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Positive voltage on USB DP/DM pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "with respect to ground",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Positive voltage on USB3UP_xxxx/USB3DN_xxxx pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.32,
          "conditions": "with respect to ground",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "HBM ESD Performance",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "+1.2 V Supply Voltage",
          "symbol": "VDD12",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.08,
          "typ": null,
          "max": 1.32,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "+3.3 V Supply Voltage",
          "symbol": "VDD33",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Input Signal Pins Voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "XTALI/CLK_IN Voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "USB 2.0 DP/DM Signal Pins Voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "USB 3.2 Gen 1 USB3UP_xxxx/USB3DN_xxxx Pins Voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 1.32,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Ambient Operating Temperature, commercial",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "commercial version, still air",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Ambient Operating Temperature, industrial",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "industrial version, still air",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "+1.2 V Supply Voltage Rise Time",
          "symbol": "TRT",
          "kind": "recommended_operating",
          "unit": "ms",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Figure 10-1",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "+3.3 V Supply Voltage Rise Time",
          "symbol": "TRT",
          "kind": "recommended_operating",
          "unit": "ms",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Figure 10-1",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "O6 Low Output Level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL = 6 mA",
          "source_page": 35,
          "source": "datasheet"
        },
        {
          "name": "O12 Low Output Level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL = 12 mA",
          "source_page": 35,
          "source": "datasheet"
        },
        {
          "name": "OD12 Low Output Level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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