TRS3237ECDBR

{
  "slug": "trs3237ecdbr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments RS232 ICs, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "trs3237ecdbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "trs3237ecdbr.kicad_sym",
    "trs3237ecdbr.kicad_mod",
    "trs3237ecdbr.glb",
    "trs3237ecdbr.step",
    "trs3237ecdbr.lbr",
    "docs/hero.png",
    "docs/trs3237ecdbr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "trs3237ecdbr-hero.glb",
    "trs3237ecdbr-hero.overlay.json"
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  "component": {
    "mpn": "TRS3237ECDBR",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-28-208mil",
    "pin_count": 28,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/trs3237e",
    "parts": {
      "symbol": "trs3237ecdbr.kicad_sym",
      "footprint": "trs3237ecdbr.kicad_mod",
      "model_3d": "trs3237ecdbr-hero.glb",
      "model_3d_plain": "trs3237ecdbr.glb",
      "model_3d_step": "trs3237ecdbr-etched.step",
      "model_3d_step_plain": "trs3237ecdbr.step",
      "lbr": "trs3237ecdbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2672586",
      "digikey": "296-25042-2-ND",
      "mouser": "595-TRS3237ECDBR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T16:02:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-25042-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TRS3237ECDBR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of charge-pump capacitor C2 of the dual charge pump; the device uses four external capacitors (C1-C4) for operation from 3 V to 5.5 V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Network ground; all device voltages are referenced to network GND."
      },
      {
        "number": "3",
        "name": "C2−",
        "type": "passive",
        "description": "Negative terminal of charge-pump capacitor C2 of the dual charge pump."
      },
      {
        "number": "4",
        "name": "V−",
        "type": "power_out",
        "description": "Charge-pump generated negative supply for the RS-232 drivers; rated to −7 V absolute maximum, with V+ − V− not exceeding 13 V."
      },
      {
        "number": "5",
        "name": "DOUT1",
        "type": "output",
        "description": "RS-232 driver output 1, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."
      },
      {
        "number": "6",
        "name": "DOUT2",
        "type": "output",
        "description": "RS-232 driver output 2, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."
      },
      {
        "number": "7",
        "name": "DOUT3",
        "type": "output",
        "description": "RS-232 driver output 3, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."
      },
      {
        "number": "8",
        "name": "RIN1",
        "type": "input",
        "description": "RS-232 receiver input 1, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance."
      },
      {
        "number": "9",
        "name": "RIN2",
        "type": "input",
        "description": "RS-232 receiver input 2, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance."
      },
      {
        "number": "10",
        "name": "DOUT4",
        "type": "output",
        "description": "RS-232 driver output 4, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."
      },
      {
        "number": "11",
        "name": "RIN3",
        "type": "input",
        "description": "RS-232 receiver input 3, rated for ±25 V input voltage with 3 kΩ to 7 kΩ input resistance."
      },
      {
        "number": "12",
        "name": "DOUT5",
        "type": "output",
        "description": "RS-232 driver output 5, rated ±13.2 V absolute maximum and forced to high impedance when SHDN = GND."
      },
      {
        "number": "13",
        "name": "EN",
        "type": "input",
        "description": "Receiver enable input; setting EN high places the receiver outputs (except ROUT1B) in high impedance."
      },
      {
        "number": "14",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown input; driving SHDN to GND disables the transmitters, forces DOUT high impedance, disables the charge pump and limits supply current to less than 1 mA."
      },
      {
        "number": "15",
        "name": "MBAUD",
        "type": "input",
        "description": "Data-rate select input; GND selects 250 kbit/s operation and VCC selects up to 1 Mbit/s operation."
      },
      {
        "number": "16",
        "name": "ROUT1B",
        "type": "output",
        "description": "Receiver output 1B, remains active regardless of the EN and SHDN states."
      },
      {
        "number": "17",
        "name": "DIN5",
        "type": "input",
        "description": "Driver input 5 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."
      },
      {
        "number": "18",
        "name": "ROUT3",
        "type": "output",
        "description": "Receiver logic output 3, with VOH of at least VCC − 0.6 V at IOH = −1 mA."
      },
      {
        "number": "19",
        "name": "DIN4",
        "type": "input",
        "description": "Driver input 4 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."
      },
      {
        "number": "20",
        "name": "ROUT2",
        "type": "output",
        "description": "Receiver logic output 2, with VOH of at least VCC − 0.6 V at IOH = −1 mA."
      },
      {
        "number": "21",
        "name": "ROUT1",
        "type": "output",
        "description": "Receiver logic output 1, with VOH of at least VCC − 0.6 V at IOH = −1 mA."
      },
      {
        "number": "22",
        "name": "DIN3",
        "type": "input",
        "description": "Driver input 3 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."
      },
      {
        "number": "23",
        "name": "DIN2",
        "type": "input",
        "description": "Driver input 2 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."
      },
      {
        "number": "24",
        "name": "DIN1",
        "type": "input",
        "description": "Driver input 1 logic input; VIL maximum 0.8 V and VIH from 2 V (3.3 V supply) or 2.4 V (5 V supply), rated to 6 V absolute maximum."
      },
      {
        "number": "25",
        "name": "C1−",
        "type": "passive",
        "description": "Negative terminal of charge-pump capacitor C1 of the dual charge pump."
      },
      {
        "number": "26",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input, 3 V to 5.5 V (3.3 V ±0.3 V or 5 V ±0.5 V), with −0.3 V to 6 V absolute maximum."
      },
      {
        "number": "27",
        "name": "V+",
        "type": "power_out",
        "description": "Charge-pump generated positive supply for the RS-232 drivers; rated to 7 V absolute maximum."
      },
      {
        "number": "28",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of charge-pump capacitor C1 of the dual charge pump."
      }
    ],
    "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: Pin-number mapping was inferred from the text-extracted DB/DW/PW top-view diagram on page 1 (labels ; Pin descriptions are summarized from absolute-maximum, recommended-operating and electrical-characte; The DB (SSOP-28) variant is the one matching TRS3237ECDBR. The same pin list applies to the DW and P",
          "8/28 pins cited to the wrong page (name found elsewhere): ['8:RIN1@p6', '9:RIN2@p6', '11:RIN3@p6', '18:ROUT3@p6']"
        ],
        "pages_sent": 18,
        "cost_usd": 0.1028,
        "at": "2026-10-08T16:02:28"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/trs3237e",
        "pages": 18,
        "sha256": "b972aab2d1469ca9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "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": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "trs3237ecdbr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6b9198863bfe924d2132debea3c6bad4a7a98c31236e5c6e071966f735f7dcae",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}