THVD1452DR

{
  "schema_version": 1,
  "type": "component",
  "slug": "thvd1452dr",
  "title": "THVD1452DR",
  "brief": "Texas Instruments RS-485/RS-422 ICs, SOIC-14. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "comm-uart",
    "thvd1452dr"
  ],
  "component": {
    "mpn": "THVD1452DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Comm/UART",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://www.ti.com/lit/ds/symlink/thvd1452.pdf",
    "parts": {
      "symbol": "thvd1452dr.kicad_sym",
      "footprint": "thvd1452dr.kicad_mod",
      "model_3d": "thvd1452dr-etched.glb",
      "model_3d_plain": "thvd1452dr.glb",
      "model_3d_step": "thvd1452dr-etched.step",
      "model_3d_step_plain": "thvd1452dr.step",
      "lbr": "thvd1452dr.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to ground; no electrical function."
      },
      {
        "number": "2",
        "name": "R",
        "type": "output",
        "description": "Receiver data output. Digital CMOS output that reflects the recovered logic state of the receiver differential inputs A/B. VOH ≈ VCC − 0.2 V, VOL ≈ 0.2 V."
      },
      {
        "number": "3",
        "name": "RE",
        "type": "input",
        "description": "Receiver enable, active low. Digital input with an internal 2-MΩ pull-up; drive low to enable the receiver output R, high (or leave open) to place R in high-impedance."
      },
      {
        "number": "4",
        "name": "DE",
        "type": "input",
        "description": "Driver enable, active high. Digital input with an internal 2-MΩ pull-down; drive high to enable the differential driver outputs Y/Z, low (or leave open) to place them in high-impedance."
      },
      {
        "number": "5",
        "name": "D",
        "type": "input",
        "description": "Driver data input. Digital input that sets the polarity of the differential driver outputs Y/Z when DE is asserted high."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Pins 6 and 7 are internally connected; both should be tied to the system ground plane."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Internally connected to pin 6; both should be tied to the system ground plane."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to ground; no electrical function."
      },
      {
        "number": "9",
        "name": "Y",
        "type": "output",
        "description": "Non-inverting differential driver output (RS-485/RS-422 bus output, complementary to Z). Drives the transmit pair when DE is high; high-impedance otherwise. Withstands −18 V to +18 V bus voltage."
      },
      {
        "number": "10",
        "name": "Z",
        "type": "output",
        "description": "Inverting differential driver output (RS-485/RS-422 bus output, complementary to Y). Drives the transmit pair when DE is high; high-impedance otherwise. Withstands −18 V to +18 V bus voltage."
      },
      {
        "number": "11",
        "name": "B",
        "type": "input",
        "description": "Inverting differential receiver input (RS-485/RS-422 bus input, complementary to A). Presents 1/8 unit load allowing up to 256 nodes on the bus; withstands −18 V to +18 V."
      },
      {
        "number": "12",
        "name": "A",
        "type": "input",
        "description": "Non-inverting differential receiver input (RS-485/RS-422 bus input, complementary to B). Presents 1/8 unit load allowing up to 256 nodes on the bus; withstands −18 V to +18 V."
      },
      {
        "number": "13",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 3.0 V to 5.5 V (3.3-V to 5-V nominal). Pins 13 and 14 are internally connected; bypass with a local decoupling capacitor to GND."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 3.0 V to 5.5 V (3.3-V to 5-V nominal). Internally connected to pin 13; bypass with a local decoupling capacitor to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/thvd1452.pdf",
        "pages": 54,
        "sha256": "58ecc4cc07dd1d32",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "thvd1452dr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "thvd1452dr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e55f97640b4faa71af96c920678ecae92cc4cd9de99f68a3bffc50820743476d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-14",
      "Category": "Comm/UART",
      "Pins": "14"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "thvd1452dr"
  ],
  "discovery_pitch": "THVD1452DR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "thvd1452dr.kicad_sym",
    "thvd1452dr.kicad_mod",
    "thvd1452dr.glb",
    "thvd1452dr.step",
    "thvd1452dr.lbr",
    "docs/hero.png",
    "docs/thvd1452dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "thvd1452dr-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "THVD1452DR",
      "kind": "packaging"
    },
    {
      "mpn": "THVD1452DRD",
      "kind": "packaging"
    },
    {
      "mpn": "THVD1452DRDGSR",
      "kind": "packaging"
    },
    {
      "mpn": "THVD1452DRDGS",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T09:40:12.549Z"
}