TL16C554PN

{
  "slug": "tl16c554pn",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments UART, LQFP-80(12x12). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "tl16c554pn",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl16c554pn.kicad_sym",
    "tl16c554pn.kicad_mod",
    "tl16c554pn.glb",
    "tl16c554pn.step",
    "tl16c554pn.lbr",
    "docs/hero.png",
    "docs/tl16c554pn-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tl16c554pn-hero.glb",
    "tl16c554pn-hero.overlay.json"
  ],
  "component": {
    "mpn": "TL16C554PN",
    "manufacturer": "Texas Instruments",
    "package": "LQFP-80(12x12)",
    "pin_count": 80,
    "category": "Interface",
    "subcategory": "UART",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tl16c554",
    "parts": {
      "symbol": "tl16c554pn.kicad_sym",
      "footprint": "tl16c554pn.kicad_mod",
      "model_3d": "tl16c554pn-hero.glb",
      "model_3d_plain": "tl16c554pn.glb",
      "model_3d_step": "tl16c554pn-etched.step",
      "model_3d_step_plain": "tl16c554pn.step",
      "lbr": "tl16c554pn.lbr"
    },
    "distributor_links": {
      "lcsc": "C2859658",
      "digikey": "2156-TL16C554PN-ND",
      "mouser": "595-TL16C554PN"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T17:05:58Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-TL16C554PN-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TL16C554PN",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "2",
        "name": "DCDD",
        "type": "input",
        "description": "Channel D data carrier detect, active low, read as bit 7 of the modem status register."
      },
      {
        "number": "3",
        "name": "RID",
        "type": "input",
        "description": "Channel D ring detect indicator, a low means the modem received a ring signal, read as bit 6 of the modem status register."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "input",
        "description": "Channel D serial data input, disconnected from the external pin in loopback mode."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, 4.75 V to 5.25 V recommended."
      },
      {
        "number": "6",
        "name": "INTN",
        "type": "input",
        "description": "Interrupt normal; high always enables the interrupts, low or floating enables them per OUT2 (MCR bit 3)."
      },
      {
        "number": "7",
        "name": "D0",
        "type": "bidirectional",
        "description": "Data bus bit 0 (LSB), 3-state bidirectional."
      },
      {
        "number": "8",
        "name": "D1",
        "type": "bidirectional",
        "description": "Data bus bit 1, 3-state bidirectional."
      },
      {
        "number": "9",
        "name": "D2",
        "type": "bidirectional",
        "description": "Data bus bit 2, 3-state bidirectional."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "11",
        "name": "D3",
        "type": "bidirectional",
        "description": "Data bus bit 3, 3-state bidirectional."
      },
      {
        "number": "12",
        "name": "D4",
        "type": "bidirectional",
        "description": "Data bus bit 4, 3-state bidirectional."
      },
      {
        "number": "13",
        "name": "D5",
        "type": "bidirectional",
        "description": "Data bus bit 5, 3-state bidirectional."
      },
      {
        "number": "14",
        "name": "D6",
        "type": "bidirectional",
        "description": "Data bus bit 6, 3-state bidirectional."
      },
      {
        "number": "15",
        "name": "D7",
        "type": "bidirectional",
        "description": "Data bus bit 7 (MSB), 3-state bidirectional."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Signal and power ground."
      },
      {
        "number": "17",
        "name": "RXA",
        "type": "input",
        "description": "Channel A serial data input, disconnected from the external pin in loopback mode."
      },
      {
        "number": "18",
        "name": "RIA",
        "type": "input",
        "description": "Channel A ring detect indicator, a low means the modem received a ring signal, read as bit 6 of the modem status register."
      },
      {
        "number": "19",
        "name": "DCDA",
        "type": "input",
        "description": "Channel A data carrier detect, active low, read as bit 7 of the modem status register."
      },
      {
        "number": "20",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "21",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "22",
        "name": "DSRA",
        "type": "input",
        "description": "Channel A data set ready modem status input, read as bit 5 of the modem status register."
      },
      {
        "number": "23",
        "name": "CTSA",
        "type": "input",
        "description": "Channel A clear to send modem status input, read as bit 4 of the modem status register."
      },
      {
        "number": "24",
        "name": "DTRA",
        "type": "output",
        "description": "Channel A data terminal ready output, active low when the DTR bit of the modem control register is set."
      },
      {
        "number": "25",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, 4.75 V to 5.25 V recommended."
      },
      {
        "number": "26",
        "name": "RTSA",
        "type": "output",
        "description": "Channel A request to send output, set high after reset."
      },
      {
        "number": "27",
        "name": "INTA",
        "type": "output",
        "description": "Channel A external interrupt output, goes high when enabled and an interrupt needs service."
      },
      {
        "number": "28",
        "name": "CSA",
        "type": "input",
        "description": "Channel A chip select, enables read and write operations to channel A."
      },
      {
        "number": "29",
        "name": "TXA",
        "type": "output",
        "description": "Channel A transmit serial data output, set to the marking (high) state by reset."
      },
      {
        "number": "30",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "31",
        "name": "IOW",
        "type": "input",
        "description": "Write strobe, allows the CPU to write into the register selected by the address inputs."
      },
      {
        "number": "32",
        "name": "TXB",
        "type": "output",
        "description": "Channel B transmit serial data output, set to the marking (high) state by reset."
      },
      {
        "number": "33",
        "name": "CSB",
        "type": "input",
        "description": "Channel B chip select, enables read and write operations to channel B."
      },
      {
        "number": "34",
        "name": "INTB",
        "type": "output",
        "description": "Channel B external interrupt output, goes high when enabled and an interrupt needs service."
      },
      {
        "number": "35",
        "name": "RTSB",
        "type": "output",
        "description": "Channel B request to send output, set high after reset."
      },
      {
        "number": "36",
        "name": "GND",
        "type": "power_in",
        "description": "Signal and power ground."
      },
      {
        "number": "37",
        "name": "DTRB",
        "type": "output",
        "description": "Channel B data terminal ready output, active low when the DTR bit of the modem control register is set."
      },
      {
        "number": "38",
        "name": "CTSB",
        "type": "input",
        "description": "Channel B clear to send modem status input, read as bit 4 of the modem status register."
      },
      {
        "number": "39",
        "name": "DSRB",
        "type": "input",
        "description": "Channel B data set ready modem status input, read as bit 5 of the modem status register."
      },
      {
        "number": "40",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "41",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "42",
        "name": "DCDB",
        "type": "input",
        "description": "Channel B data carrier detect, active low, read as bit 7 of the modem status register."
      },
      {
        "number": "43",
        "name": "RIB",
        "type": "input",
        "description": "Channel B ring detect indicator, a low means the modem received a ring signal, read as bit 6 of the modem status register."
      },
      {
        "number": "44",
        "name": "RXB",
        "type": "input",
        "description": "Channel B serial data input, disconnected from the external pin in loopback mode."
      },
      {
        "number": "45",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, 4.75 V to 5.25 V recommended."
      },
      {
        "number": "46",
        "name": "A2",
        "type": "input",
        "description": "Register select input bit 2, selects the ACE register to read or write."
      },
      {
        "number": "47",
        "name": "A1",
        "type": "input",
        "description": "Register select input bit 1, selects the ACE register to read or write."
      },
      {
        "number": "48",
        "name": "A0",
        "type": "input",
        "description": "Register select input bit 0, selects the ACE register to read or write."
      },
      {
        "number": "49",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "50",
        "name": "XTAL1",
        "type": "input",
        "description": "Crystal input 1 or external clock input, up to 16 MHz clock frequency."
      },
      {
        "number": "51",
        "name": "XTAL2",
        "type": "output",
        "description": "Crystal output 2 or buffered clock output."
      },
      {
        "number": "52",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "53",
        "name": "RESET",
        "type": "input",
        "description": "Master reset, clears most ACE registers and disables the transmitter output and receiver input during reset."
      },
      {
        "number": "54",
        "name": "RXRDY",
        "type": "output",
        "description": "Receive ready, goes low when the receive FIFO is full, usable as single or multitransfer DMA signal."
      },
      {
        "number": "55",
        "name": "TXRDY",
        "type": "output",
        "description": "Transmit ready, goes low when the transmit FIFO is full, usable as single or multitransfer DMA signal."
      },
      {
        "number": "56",
        "name": "GND",
        "type": "power_in",
        "description": "Signal and power ground."
      },
      {
        "number": "57",
        "name": "RXC",
        "type": "input",
        "description": "Channel C serial data input, disconnected from the external pin in loopback mode."
      },
      {
        "number": "58",
        "name": "RIC",
        "type": "input",
        "description": "Channel C ring detect indicator, a low means the modem received a ring signal, read as bit 6 of the modem status register."
      },
      {
        "number": "59",
        "name": "DCDC",
        "type": "input",
        "description": "Channel C data carrier detect, active low, read as bit 7 of the modem status register."
      },
      {
        "number": "60",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "61",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "62",
        "name": "DSRC",
        "type": "input",
        "description": "Channel C data set ready modem status input, read as bit 5 of the modem status register."
      },
      {
        "number": "63",
        "name": "CTSC",
        "type": "input",
        "description": "Channel C clear to send modem status input, read as bit 4 of the modem status register."
      },
      {
        "number": "64",
        "name": "DTRC",
        "type": "output",
        "description": "Channel C data terminal ready output, active low when the DTR bit of the modem control register is set."
      },
      {
        "number": "65",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, 4.75 V to 5.25 V recommended."
      },
      {
        "number": "66",
        "name": "RTSC",
        "type": "output",
        "description": "Channel C request to send output, set high after reset."
      },
      {
        "number": "67",
        "name": "INTC",
        "type": "output",
        "description": "Channel C external interrupt output, goes high when enabled and an interrupt needs service."
      },
      {
        "number": "68",
        "name": "CSC",
        "type": "input",
        "description": "Channel C chip select, enables read and write operations to channel C."
      },
      {
        "number": "69",
        "name": "TXC",
        "type": "output",
        "description": "Channel C transmit serial data output, set to the marking (high) state by reset."
      },
      {
        "number": "70",
        "name": "IOR",
        "type": "input",
        "description": "Read strobe, a low level transfers the contents of the data bus to the external CPU bus."
      },
      {
        "number": "71",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "72",
        "name": "TXD",
        "type": "output",
        "description": "Channel D transmit serial data output, set to the marking (high) state by reset."
      },
      {
        "number": "73",
        "name": "CSD",
        "type": "input",
        "description": "Channel D chip select, enables read and write operations to channel D."
      },
      {
        "number": "74",
        "name": "INTD",
        "type": "output",
        "description": "Channel D external interrupt output, goes high when enabled and an interrupt needs service."
      },
      {
        "number": "75",
        "name": "RTSD",
        "type": "output",
        "description": "Channel D request to send output, set high after reset."
      },
      {
        "number": "76",
        "name": "GND",
        "type": "power_in",
        "description": "Signal and power ground."
      },
      {
        "number": "77",
        "name": "DTRD",
        "type": "output",
        "description": "Channel D data terminal ready output, active low when the DTR bit of the modem control register is set."
      },
      {
        "number": "78",
        "name": "CTSD",
        "type": "input",
        "description": "Channel D clear to send modem status input, read as bit 4 of the modem status register."
      },
      {
        "number": "79",
        "name": "DSRD",
        "type": "input",
        "description": "Channel D data set ready modem status input, read as bit 5 of the modem status register."
      },
      {
        "number": "80",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      }
    ],
    "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 PN top-view drawing text is scrambled. D0-D7 pin numbers come from the PN column of the Terminal; These 13 pins are marked NC in the PN top-view drawing and are not listed in the Terminal Functions ; Supply and ground pins are taken from the Terminal Functions table. The VCC and GND pins are listed "
        ],
        "pages_sent": 13,
        "cost_usd": 0.1327,
        "at": "2026-10-11T17:05:30"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tl16c554",
        "pages": 35,
        "sha256": "607fc95ad43d0d41",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 80,
        "described": 80,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tl16c554pn.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          14.0,
          14.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f782bdbc6327d920be33e2b9906695d7c3690117933775c3f145eac71f2013ac",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl16c554pn-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          14.0,
          14.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "24d3568d2b1eaf86eb4fa0d66d61037b10d8363ccca2a79aad574aae345defa2",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}