TF21844-3BS

{
  "slug": "tf21844-3bs",
  "version": "0.1.0",
  "type": "component",
  "description": "TFSS Gate Drivers, PDIP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "motor driver ics",
    "tf21844-3bs",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tf21844-3bs.kicad_sym",
    "tf21844-3bs.kicad_mod",
    "tf21844-3bs.glb",
    "tf21844-3bs.step",
    "tf21844-3bs.lbr",
    "docs/hero.png",
    "docs/tf21844-3bs-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tf21844-3bs-hero.glb",
    "tf21844-3bs-hero.overlay.json",
    "tf21844-3bs-etched.glb"
  ],
  "component": {
    "mpn": "TF21844-3BS",
    "manufacturer": "TFSS",
    "package": "PDIP-14",
    "pin_count": 14,
    "category": "Motor Driver ICs",
    "subcategory": "Gate Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603184240771014656",
    "parts": {
      "symbol": "tf21844-3bs.kicad_sym",
      "footprint": "tf21844-3bs.kicad_mod",
      "model_3d": "tf21844-3bs-hero.glb",
      "model_3d_plain": "tf21844-3bs-etched.glb",
      "model_3d_step": "tf21844-3bs-etched.step",
      "model_3d_step_plain": "tf21844-3bs.step",
      "lbr": "tf21844-3bs.lbr"
    },
    "distributor_links": {
      "lcsc": "C6387920"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T15:01:38Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "input",
        "description": "Logic input for high-side and low-side gate driver outputs (HO and LO), in phase with HO, referenced to VSS, with Schmitt trigger and internal pull-down."
      },
      {
        "number": "2",
        "name": "SD*",
        "type": "input",
        "description": "Logic input for shutdown, referenced to VSS, enabled low."
      },
      {
        "number": "3",
        "name": "VSS",
        "type": "power_in",
        "description": "Logic ground; logic supply offset voltage -5V to +5V relative to COM."
      },
      {
        "number": "4",
        "name": "DT",
        "type": "passive",
        "description": "Programmable deadtime lead referenced to VSS; an external resistor sets dead time (about 400ns at RDT=0 ohm, 5us at 200k ohm)."
      },
      {
        "number": "5",
        "name": "COM",
        "type": "power_in",
        "description": "Low-side return."
      },
      {
        "number": "6",
        "name": "LO",
        "type": "output",
        "description": "Low-side gate drive output, 1.4A source / 1.8A sink capability."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Low-side and logic fixed supply, 10V to 20V recommended operating range."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect."
      },
      {
        "number": "11",
        "name": "VS",
        "type": "power_in",
        "description": "High-side floating supply return; operates up to 600V in bootstrap operation."
      },
      {
        "number": "12",
        "name": "HO",
        "type": "output",
        "description": "High-side gate drive output, 1.4A source / 1.8A sink capability."
      },
      {
        "number": "13",
        "name": "VB",
        "type": "power_in",
        "description": "High-side floating supply, VS+10V to VS+20V recommended, absolute maximum +624V."
      },
      {
        "number": "14",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbering read from the top-view diagram on page 2, which is shared by PDIP-14 and SOIC-14. The ; The DT pin type is set to passive because it connects to an external resistor. The datasheet does no",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 9,
        "cost_usd": 0.2271,
        "at": "2026-10-16T15:01:21"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603184240771014656",
        "pages": 9,
        "sha256": "e7b821c4d1eff14e",
        "source_tier": "lcsc"
      },
      "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": "tf21844-3bs.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.05,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3dae072a95c64bee0d1e58be8e75383639f5017ab982de1749d05808a4eed058",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tf21844-3bs-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": [
          7.874,
          19.05,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dbf99f0bd3c0913918ac52fea9eb09adfc046f0e76094f775e4c9f79fcce3574",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}