SN75LVPE5421RUAR

{
  "slug": "sn75lvpe5421ruar",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Interface - PCIs / PCIEs, WQFN-42. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "sn75lvpe5421ruar",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn75lvpe5421ruar.kicad_sym",
    "sn75lvpe5421ruar.kicad_mod",
    "sn75lvpe5421ruar.glb",
    "sn75lvpe5421ruar.step",
    "sn75lvpe5421ruar.lbr",
    "docs/hero.png",
    "docs/sn75lvpe5421ruar-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn75lvpe5421ruar-hero.glb",
    "sn75lvpe5421ruar-hero.overlay.json"
  ],
  "component": {
    "mpn": "SN75LVPE5421RUAR",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-42",
    "pin_count": 43,
    "category": "Interface",
    "subcategory": "Interface - PCIs / PCIEs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn75lvpe5421",
    "parts": {
      "symbol": "sn75lvpe5421ruar.kicad_sym",
      "footprint": "sn75lvpe5421ruar.kicad_mod",
      "model_3d": "sn75lvpe5421ruar-hero.glb",
      "model_3d_plain": "sn75lvpe5421ruar.glb",
      "model_3d_step": "sn75lvpe5421ruar-etched.step",
      "model_3d_step_plain": "sn75lvpe5421ruar.step",
      "lbr": "sn75lvpe5421ruar.lbr"
    },
    "distributor_links": {
      "lcsc": "C5216124",
      "digikey": "296-SN75LVPE5421RUARTR-ND",
      "mouser": "595-SN75LVPE5421RUAR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T04:24:09Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-SN75LVPE5421RUARTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN75LVPE5421RUAR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GAIN/SDA",
        "type": "bidirectional",
        "description": "In Pin Mode this 5-level pin sets the flat broadband (DC and AC) gain for all channels and is sampled at power-up only; in SMBus/I2C mode it is the 3.3V SMBus/I2C data line and needs an external pull-up such as 4.7 kΩ."
      },
      {
        "number": "2",
        "name": "RSVD1",
        "type": "passive",
        "description": "Reserved pin; for best signal integrity connect it to GND, with a 0 Ω resistor to GND as an alternate option."
      },
      {
        "number": "3",
        "name": "TX0P",
        "type": "output",
        "description": "Noninverting differential TX output for Channel 0."
      },
      {
        "number": "4",
        "name": "TX0N",
        "type": "output",
        "description": "Inverting differential TX output for Channel 0."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, VCC = 3.3V ±10%; connect through a low-resistance path to the board VCC plane."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "7",
        "name": "TX1P",
        "type": "output",
        "description": "Noninverting differential TX output for Channel 1."
      },
      {
        "number": "8",
        "name": "TX1N",
        "type": "output",
        "description": "Inverting differential TX output for Channel 1."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "10",
        "name": "TX2P",
        "type": "output",
        "description": "Noninverting differential TX output for Channel 2."
      },
      {
        "number": "11",
        "name": "TX2N",
        "type": "output",
        "description": "Inverting differential TX output for Channel 2."
      },
      {
        "number": "12",
        "name": "RSVD2",
        "type": "passive",
        "description": "Reserved pin; for best signal integrity connect it to GND, with a 0 Ω resistor to GND as an alternate option."
      },
      {
        "number": "13",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, VCC = 3.3V ±10%; connect through a low-resistance path to the board VCC plane."
      },
      {
        "number": "14",
        "name": "TX3P",
        "type": "output",
        "description": "Noninverting differential TX output for Channel 3."
      },
      {
        "number": "15",
        "name": "TX3N",
        "type": "output",
        "description": "Inverting differential TX output for Channel 3."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "17",
        "name": "SEL",
        "type": "input",
        "description": "3.3V LVCMOS mux select (weak internal pull-down) choosing Port A (Low) or Port B (High); it must be exercised in system implementations and is also used in the PCIe RX_DET state machine."
      },
      {
        "number": "18",
        "name": "PD",
        "type": "input",
        "description": "3.3V LVCMOS 2-level power-down control: High powers down all channels and Low powers up normal operation; PD must be low for a valid pulse width of at least 200 µs to be detected."
      },
      {
        "number": "19",
        "name": "TEST",
        "type": "output",
        "description": "TI internal test pin; keep no connect."
      },
      {
        "number": "20",
        "name": "EQ1",
        "type": "input",
        "description": "5-level input that, together with EQ0, sets receiver linear equalization (CTLE, AC gain) for all channels in Pin Mode; sampled at device power-up only."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "22",
        "name": "RXB3N",
        "type": "input",
        "description": "Inverting differential RX input for Port B, Channel 3."
      },
      {
        "number": "23",
        "name": "RXB3P",
        "type": "input",
        "description": "Noninverting differential RX input for Port B, Channel 3."
      },
      {
        "number": "24",
        "name": "RXA3N",
        "type": "input",
        "description": "Inverting differential RX input for Port A, Channel 3."
      },
      {
        "number": "25",
        "name": "RXA3P",
        "type": "input",
        "description": "Noninverting differential RX input for Port A, Channel 3."
      },
      {
        "number": "26",
        "name": "RXB2N",
        "type": "input",
        "description": "Inverting differential RX input for Port B, Channel 2."
      },
      {
        "number": "27",
        "name": "RXB2P",
        "type": "input",
        "description": "Noninverting differential RX input for Port B, Channel 2."
      },
      {
        "number": "28",
        "name": "RXA2N",
        "type": "input",
        "description": "Inverting differential RX input for Port A, Channel 2."
      },
      {
        "number": "29",
        "name": "RXA2P",
        "type": "input",
        "description": "Noninverting differential RX input for Port A, Channel 2."
      },
      {
        "number": "30",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "31",
        "name": "RXB1N",
        "type": "input",
        "description": "Inverting differential RX input for Port B, Channel 1."
      },
      {
        "number": "32",
        "name": "RXB1P",
        "type": "input",
        "description": "Noninverting differential RX input for Port B, Channel 1."
      },
      {
        "number": "33",
        "name": "RXA1N",
        "type": "input",
        "description": "Inverting differential RX input for Port A, Channel 1."
      },
      {
        "number": "34",
        "name": "RXA1P",
        "type": "input",
        "description": "Noninverting differential RX input for Port A, Channel 1."
      },
      {
        "number": "35",
        "name": "RXB0N",
        "type": "input",
        "description": "Inverting differential RX input for Port B, Channel 0."
      },
      {
        "number": "36",
        "name": "RXB0P",
        "type": "input",
        "description": "Noninverting differential RX input for Port B, Channel 0."
      },
      {
        "number": "37",
        "name": "RXA0N",
        "type": "input",
        "description": "Inverting differential RX input for Port A, Channel 0."
      },
      {
        "number": "38",
        "name": "RXA0P",
        "type": "input",
        "description": "Noninverting differential RX input for Port A, Channel 0."
      },
      {
        "number": "39",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "40",
        "name": "EQ0/ADDR",
        "type": "input",
        "description": "5-level pin: in Pin Mode it sets receiver CTLE (AC gain) with EQ1 and is sampled at power-up only; in SMBus/I2C mode it sets the secondary address together with MODE."
      },
      {
        "number": "41",
        "name": "MODE",
        "type": "input",
        "description": "5-level pin that selects the control configuration: L0 is Pin Mode, L1 or L2 is SMBus/I2C mode, and L3/L4 (float) are reserved for TI internal test; sampled at power-up or in normal operation."
      },
      {
        "number": "42",
        "name": "RX_DET/SCL",
        "type": "bidirectional",
        "description": "5-level pin that sets receiver-detect state machine options in Pin Mode (sampled at power-up only) and is the 3.3V SMBus/I2C clock line needing an external pull-up such as 4.7 kΩ in SMBus/I2C mode."
      },
      {
        "number": "43",
        "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: Datasheet types TEST as output (O) but says to keep it no connect; typed as output per the table, so; RSVD1 and RSVD2 are typed as '—' in the table; datasheet recommends tying them to GND, so typed pass; The exposed pad is printed as 'EP=GND' on the package drawing and is not a numbered lead; it is incl",
          "exposed pad 43 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0816,
        "at": "2026-10-08T04:23:53"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn75lvpe5421",
        "pages": 34,
        "sha256": "11ba0b44cce0af26",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 43,
        "described": 43,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sn75lvpe5421ruar.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          6.0,
          1.0
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2569b48dcaceda4dbe78fcddd89f8dbed103372f8da3668c33ea3009042410c4",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn75lvpe5421ruar-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          6.0,
          1.0
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a7f012853435d479edb7bc928ad22f7457582b6c717c7b69edc54ceeae3cefbb",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}