CH440R

{
  "slug": "ch440r",
  "version": "0.1.0",
  "type": "component",
  "description": "WCH Jiangsu Qin Heng Analog Switches, Multiplexers, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "ch440r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch440r.kicad_sym",
    "ch440r.kicad_mod",
    "ch440r.glb",
    "ch440r.step",
    "ch440r.lbr",
    "docs/hero.png",
    "docs/ch440r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ch440r-hero.glb",
    "ch440r-hero.overlay.json",
    "ch440r-etched.glb"
  ],
  "component": {
    "mpn": "CH440R",
    "manufacturer": "WCH Jiangsu Qin Heng",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883744568037376",
    "parts": {
      "symbol": "ch440r.kicad_sym",
      "footprint": "ch440r.kicad_mod",
      "model_3d": "ch440r-hero.glb",
      "model_3d_plain": "ch440r-etched.glb",
      "model_3d_step": "ch440r-etched.step",
      "model_3d_step_plain": "ch440r.step",
      "lbr": "ch440r.lbr"
    },
    "distributor_links": {
      "lcsc": "C282323"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T06:56:57Z",
      "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": "Two-to-one analog switch select input: high selects the 2# side (S2x) and low selects the 1# side (S1x)."
      },
      {
        "number": "2",
        "name": "S1A",
        "type": "passive",
        "description": "Analog switch 1# terminal for channel A, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "3",
        "name": "S2A",
        "type": "passive",
        "description": "Analog switch 2# terminal for channel A, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "4",
        "name": "DA",
        "type": "passive",
        "description": "Common terminal of the channel A 2:1 analog switch, connected to S1A or S2A depending on IN while EN# is low."
      },
      {
        "number": "5",
        "name": "S1B",
        "type": "passive",
        "description": "Analog switch 1# terminal for channel B, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "6",
        "name": "S2B",
        "type": "passive",
        "description": "Analog switch 2# terminal for channel B, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "7",
        "name": "DB",
        "type": "passive",
        "description": "Common terminal of the channel B 2:1 analog switch, connected to S1B or S2B depending on IN while EN# is low."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground and reference for digital signals; the datasheet requires a good ground connection to limit interference."
      },
      {
        "number": "9",
        "name": "DC",
        "type": "passive",
        "description": "Common terminal of the channel C 2:1 analog switch, connected to S1C or S2C depending on IN while EN# is low."
      },
      {
        "number": "10",
        "name": "S2C",
        "type": "passive",
        "description": "Analog switch 2# terminal for channel C, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "11",
        "name": "S1C",
        "type": "passive",
        "description": "Analog switch 1# terminal for channel C, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "12",
        "name": "DD",
        "type": "passive",
        "description": "Common terminal of the channel D 2:1 analog switch, connected to S1D or S2D depending on IN while EN# is low."
      },
      {
        "number": "13",
        "name": "S2D",
        "type": "passive",
        "description": "Analog switch 2# terminal for channel D, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "14",
        "name": "S1D",
        "type": "passive",
        "description": "Analog switch 1# terminal for channel D, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "15",
        "name": "EN#",
        "type": "input",
        "description": "Active-low global enable; when high, all four channels are disconnected regardless of IN."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply; the 5V-rated part operates at 4.0 to 5.5 V (absolute maximum -0.5 to 6.5 V) and must be decoupled per the datasheet."
      }
    ],
    "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 combined pin table for CH440G/P/R and CH445P (page 3) lists four part columns (CH440G, CH440R, C; Analog switch pins are typed as passive, which is my choice of KiCad class; the datasheet does not a"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0821,
        "at": "2026-10-18T06:54:59"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883744568037376",
        "pages": 16,
        "sha256": "6abffb8c7ff17e50",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ch440r.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch440r-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f2b67c953425811a68d64d7768f3a424740bd07111f1f63f71a68b4fa7a3fcdf",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}