TD522D485H-A

{
  "slug": "td522d485h-a",
  "version": "0.1.0",
  "type": "component",
  "description": "YLPTEC RS485 Bus Modules, DIP-12. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "iot-communication modules",
    "td522d485h-a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "td522d485h-a.kicad_sym",
    "td522d485h-a.kicad_mod",
    "td522d485h-a.glb",
    "td522d485h-a.step",
    "td522d485h-a.lbr",
    "docs/hero.png",
    "docs/td522d485h-a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "td522d485h-a-hero.glb",
    "td522d485h-a-hero.overlay.json",
    "td522d485h-a-etched.glb"
  ],
  "component": {
    "mpn": "TD522D485H-A",
    "manufacturer": "YLPTEC",
    "package": "DIP-12",
    "pin_count": 12,
    "category": "IoT/Communication Modules",
    "subcategory": "RS485 Bus Modules",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2fc4b014839fbbb4e3c4be9ecc8d4fd6.pdf",
    "parts": {
      "symbol": "td522d485h-a.kicad_sym",
      "footprint": "td522d485h-a.kicad_mod",
      "model_3d": "td522d485h-a-hero.glb",
      "model_3d_plain": "td522d485h-a-etched.glb",
      "model_3d_step": "td522d485h-a-etched.step",
      "model_3d_step_plain": "td522d485h-a.step",
      "lbr": "td522d485h-a.lbr"
    },
    "distributor_links": {
      "lcsc": "C5451834"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T06:20:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive power supply input; TD522D485H-A requires 4.75~5.25 VDC (5 V nominal) and has no reverse-polarity protection."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Power supply input ground."
      },
      {
        "number": "3",
        "name": "TXD1",
        "type": "input",
        "description": "Channel 1 transmit data input (5 V UART level for TD522D485H-A, VIH min 0.7VCC, VIL max 0.3VCC, with 10 kΩ pull-up)."
      },
      {
        "number": "4",
        "name": "RXD1",
        "type": "output",
        "description": "Channel 1 receive data output (5 V UART level, VOL max 0.4 V and VOH min VCC-0.4 V at IRXD=4 mA)."
      },
      {
        "number": "5",
        "name": "TXD2",
        "type": "input",
        "description": "Channel 2 transmit data input (5 V UART level for TD522D485H-A, VIH min 0.7VCC, VIL max 0.3VCC, with 10 kΩ pull-up)."
      },
      {
        "number": "6",
        "name": "RXD2",
        "type": "output",
        "description": "Channel 2 receive data output (5 V UART level, VOL max 0.4 V and VOH min VCC-0.4 V at IRXD=4 mA)."
      },
      {
        "number": "7",
        "name": "A2",
        "type": "bidirectional",
        "description": "RS-485 channel 2 A bus line, isolated from channel 1 with built-in pull resistor and ESD protection."
      },
      {
        "number": "8",
        "name": "B2",
        "type": "bidirectional",
        "description": "RS-485 channel 2 B bus line, isolated from channel 1 with built-in pull resistor and ESD protection."
      },
      {
        "number": "9",
        "name": "G2",
        "type": "passive",
        "description": "Isolated power output ground for channel 2 (RS-485 side); leave floating if unused."
      },
      {
        "number": "10",
        "name": "A1",
        "type": "bidirectional",
        "description": "RS-485 channel 1 A bus line, isolated from channel 2 with built-in pull resistor and ESD protection."
      },
      {
        "number": "11",
        "name": "B1",
        "type": "bidirectional",
        "description": "RS-485 channel 1 B bus line, isolated from channel 2 with built-in pull resistor and ESD protection."
      },
      {
        "number": "12",
        "name": "G1",
        "type": "passive",
        "description": "Isolated power output ground for channel 1 (RS-485 side); leave floating if unused."
      }
    ],
    "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: Datasheet describes pins 5 (TXD2) and 6 (RXD2) as 'transmit pin 1' / 'receive pin 1', which looks li; Pin types (input/output/bidirectional) are inferred from the function descriptions, not stated expli; Datasheet calls these isolated power output grounds and says leave floating if unused; passive type "
        ],
        "pages_sent": 5,
        "cost_usd": 0.0625,
        "at": "2026-10-23T06:19:09"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/2fc4b014839fbbb4e3c4be9ecc8d4fd6.pdf",
        "pages": 5,
        "sha256": "e28d45acbfdca7ad",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 12,
        "described": 12,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "td522d485h-a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.62,
          15.24,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.127,
        "footprint_binding": "identity",
        "sha256": "d0d14c257dc175efde81c54c2e63e5477a3af152f96520f6884aa7b452ad9e53",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "td522d485h-a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.62,
          15.24,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.127,
        "footprint_binding": "identity",
        "sha256": "7b5a7249f94f43fe8faea755daf6ce44877537cb4b603304b358d36c7ea5e3a3",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}