THVD8000

{
  "schema_version": 1,
  "type": "component",
  "slug": "thvd8000",
  "title": "THVD8000",
  "brief": "TI RS-485 transceiver with FSK modulation, SOT-23-8. Carries data over DC power or shared lines. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "rs-485",
    "fsk",
    "power-line",
    "sot-23-8",
    "texas-instruments"
  ],
  "component": {
    "mpn": "THVD8000",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 transceiver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/thvd8000.pdf",
    "parts": {
      "symbol": "thvd8000.kicad_sym",
      "footprint": "thvd8000.kicad_mod",
      "model_3d": "thvd8000-etched.glb",
      "model_3d_plain": "thvd8000.glb",
      "model_3d_step": "thvd8000-etched.step",
      "model_3d_step_plain": "thvd8000.step",
      "lbr": "thvd8000.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "R",
        "type": "output",
        "description": "Receive data output. CMOS digital output that recovers demodulated data from the RS-485 bus (OOK-demodulated). VOH ≥ VCC−0.4 V @ IOH = −4 mA; VOL ≤ 0.4 V @ IOL = 4 mA. High-Z when MODE = high (transmit mode)."
      },
      {
        "number": "2",
        "name": "MODE",
        "type": "input",
        "description": "Transmit/receive mode selection digital input. Low = receive mode; High = transmit mode. Internal 2-MΩ pull-down to GND (defaults to receive if left floating)."
      },
      {
        "number": "3",
        "name": "F_SET",
        "type": "input",
        "description": "Carrier frequency selection analog input. Connect a resistor RF_SET (1.5 kΩ to 80 kΩ) from this pin to GND to set the OOK carrier frequency f0 (125 kHz to 5 MHz). Recommended load capacitance ≤ 100 pF."
      },
      {
        "number": "4",
        "name": "D",
        "type": "input",
        "description": "Driver data input. CMOS logic input carrying the transmit data that will be OOK-modulated onto the A/B bus. Internal 2-MΩ pull-up to VCC. VIH ≥ 2 V, VIL ≤ 0.8 V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference for supply, logic, and bus circuits."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "RS-485 differential bus I/O port A (complementary to B). Operational common-mode range −7 V to 12 V; withstands ±18-V DC fault and ±16-kV HBM ESD. Driver short-circuit current limited to ±250 mA."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "RS-485 differential bus I/O port B (complementary to A). Operational common-mode range −7 V to 12 V; withstands ±18-V DC fault and ±16-kV HBM ESD. Driver short-circuit current limited to ±250 mA."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Device supply, 3.0 V to 5.5 V (nominal 3.3 V to 5 V). Absolute maximum 7 V. Decouple with a local ceramic capacitor near the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/thvd8000.pdf",
        "pages": 28,
        "sha256": "2c65cc099691c62c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "thvd8000.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b9dc5b435d49868df7491668d5322debfe5d699dbb41c2ad93a41518ec9b5007",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "thvd8000-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "713c3ef857c4d9e4b92b7d0a0192e3528c7aa094899698a0fde686b9aea58e3f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "RS-485 transceiver with FSK modulation",
      "Feature": "Data over DC power / shared pair (capacitive coupling)",
      "Carrier": "Set by F_SET resistor",
      "Logic side": "Driver (D) + receiver (R)",
      "Mode": "MODE pin",
      "Supply": "3.0-5.5 V",
      "Package": "SOT-23-8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "thvd8000",
    "rs-485 over power",
    "fsk modulated rs485",
    "data over dc bus"
  ],
  "discovery_pitch": "TI THVD8000 RS-485 transceiver with FSK modulation (SOT-23-8) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "thvd8000.kicad_sym",
    "thvd8000.kicad_mod",
    "thvd8000.glb",
    "thvd8000.step",
    "thvd8000.lbr",
    "docs/hero.png",
    "docs/thvd8000-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "thvd8000-etched.step"
  ],
  "variants": [
    {
      "mpn": "THVD8000DDFR (SOT-23-8)",
      "kind": "packaging"
    },
    {
      "mpn": "THVD8010DDFR (higher data rate)",
      "kind": "unknown"
    }
  ]
}