UM213EEASR

{
  "slug": "um213eeasr",
  "version": "0.1.0",
  "type": "component",
  "description": "Union Semiconductor RS232 ICs, SSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "um213eeasr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "um213eeasr.kicad_sym",
    "um213eeasr.kicad_mod",
    "um213eeasr.glb",
    "um213eeasr.step",
    "um213eeasr.lbr",
    "docs/hero.png",
    "docs/um213eeasr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "um213eeasr-hero.glb",
    "um213eeasr-hero.overlay.json",
    "um213eeasr-etched.glb"
  ],
  "component": {
    "mpn": "UM213EEASR",
    "manufacturer": "Union Semiconductor",
    "package": "SSOP-28",
    "pin_count": 28,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603060200928923648",
    "parts": {
      "symbol": "um213eeasr.kicad_sym",
      "footprint": "um213eeasr.kicad_mod",
      "model_3d": "um213eeasr-hero.glb",
      "model_3d_plain": "um213eeasr-etched.glb",
      "model_3d_step": "um213eeasr-etched.step",
      "model_3d_step_plain": "um213eeasr.step",
      "lbr": "um213eeasr.lbr"
    },
    "distributor_links": {
      "lcsc": "C7542882"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T15:29:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "TOUT3",
        "type": "output",
        "description": "RS-232 driver 3 output, protected to ±15kV ESD."
      },
      {
        "number": "2",
        "name": "TOUT1",
        "type": "output",
        "description": "RS-232 driver 1 output, protected to ±15kV ESD."
      },
      {
        "number": "3",
        "name": "TOUT2",
        "type": "output",
        "description": "RS-232 driver 2 output, protected to ±15kV ESD."
      },
      {
        "number": "4",
        "name": "RIN2",
        "type": "input",
        "description": "RS-232 receiver 2 input, tolerates ±30V and protected to ±15kV ESD."
      },
      {
        "number": "5",
        "name": "ROUT2",
        "type": "tri_state",
        "description": "Receiver 2 TTL/CMOS output, high-impedance in shutdown or when EN is low."
      },
      {
        "number": "6",
        "name": "TIN2",
        "type": "input",
        "description": "Driver 2 TTL/CMOS input, logic low below 0.8V and high above 2.4V."
      },
      {
        "number": "7",
        "name": "TIN1",
        "type": "input",
        "description": "Driver 1 TTL/CMOS input, logic low below 0.8V and high above 2.4V."
      },
      {
        "number": "8",
        "name": "R1OUT",
        "type": "tri_state",
        "description": "Receiver 1 TTL/CMOS output, high-impedance in shutdown or when EN is low."
      },
      {
        "number": "9",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 receiver 1 input, tolerates ±30V and protected to ±15kV ESD."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "11",
        "name": "VCC",
        "type": "power_in",
        "description": "+4.5V to +5.5V supply voltage input; bypass to ground with at least 0.1µF."
      },
      {
        "number": "12",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of charge pump capacitor C1 (0.1µF)."
      },
      {
        "number": "13",
        "name": "V+",
        "type": "power_out",
        "description": "Charge pump output regulated to +6.5V; pulled to VCC in shutdown."
      },
      {
        "number": "14",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of charge pump capacitor C1 (0.1µF)."
      },
      {
        "number": "15",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of charge pump capacitor C2 (0.1µF)."
      },
      {
        "number": "16",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of charge pump capacitor C2 (0.1µF)."
      },
      {
        "number": "17",
        "name": "V-",
        "type": "power_out",
        "description": "Charge pump output regulated to -6.5V; pulled to ground in shutdown."
      },
      {
        "number": "18",
        "name": "RIN5",
        "type": "input",
        "description": "RS-232 receiver 5 input, stays active in shutdown, tolerates ±30V."
      },
      {
        "number": "19",
        "name": "ROUT5",
        "type": "tri_state",
        "description": "Receiver 5 TTL/CMOS output, remains active in shutdown when EN is high."
      },
      {
        "number": "20",
        "name": "TIN3",
        "type": "input",
        "description": "Driver 3 TTL/CMOS input, logic low below 0.8V and high above 2.4V."
      },
      {
        "number": "21",
        "name": "TIN4",
        "type": "input",
        "description": "Driver 4 TTL/CMOS input, logic low below 0.8V and high above 2.4V."
      },
      {
        "number": "22",
        "name": "ROUT4",
        "type": "tri_state",
        "description": "Receiver 4 TTL/CMOS output, remains active in shutdown when EN is high."
      },
      {
        "number": "23",
        "name": "RIN4",
        "type": "input",
        "description": "RS-232 receiver 4 input, stays active in shutdown, tolerates ±30V."
      },
      {
        "number": "24",
        "name": "EN",
        "type": "input",
        "description": "Receiver enable, active high; low puts receiver outputs in high-impedance, no effect on drivers or charge pumps."
      },
      {
        "number": "25",
        "name": "SHDN",
        "type": "input",
        "description": "Active-low shutdown; low turns off charge pumps and transmitters, reducing supply current to about 1µA."
      },
      {
        "number": "26",
        "name": "ROUT3",
        "type": "tri_state",
        "description": "Receiver 3 TTL/CMOS output, high-impedance in shutdown or when EN is low."
      },
      {
        "number": "27",
        "name": "RIN3",
        "type": "input",
        "description": "RS-232 receiver 3 input, tolerates ±30V and protected to ±15kV ESD."
      },
      {
        "number": "28",
        "name": "TOUT4",
        "type": "output",
        "description": "RS-232 driver 4 output, protected to ±15kV ESD."
      }
    ],
    "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: Overbar on SHDN (pin 25) and its non-barred EN (pin 24) was read from the UM213 diagram and agrees w; Receiver outputs are typed tri_state because the datasheet says they go high-impedance; ROUT4 and RO; The pin table calls the receivers RIN_/ROUT_, but pins 8 and 9 are labelled R1OUT and R1IN in the di",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 27,
        "cost_usd": 0.4877,
        "at": "2026-10-18T15:26:58"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603060200928923648",
        "pages": 27,
        "sha256": "95e79390224c6dfd",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "um213eeasr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          10.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7aa76979ae41da44bded1ed74115012868f2f3f5a757faf32bb9df4f92c1e313",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "um213eeasr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          10.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d75e5b10779f53ce14d66140976bfa5060e6b530df1f800165517aa905035164",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}