TRS3237EIDBR

{
  "slug": "trs3237eidbr",
  "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",
    "trs3237eidbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "trs3237eidbr.kicad_sym",
    "trs3237eidbr.kicad_mod",
    "trs3237eidbr.glb",
    "trs3237eidbr.step",
    "trs3237eidbr.lbr",
    "docs/hero.png",
    "docs/trs3237eidbr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "trs3237eidbr-hero.glb",
    "trs3237eidbr-hero.overlay.json"
  ],
  "component": {
    "mpn": "TRS3237EIDBR",
    "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": "trs3237eidbr.kicad_sym",
      "footprint": "trs3237eidbr.kicad_mod",
      "model_3d": "trs3237eidbr-hero.glb",
      "model_3d_plain": "trs3237eidbr.glb",
      "model_3d_step": "trs3237eidbr-etched.step",
      "model_3d_step_plain": "trs3237eidbr.step",
      "lbr": "trs3237eidbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2671801",
      "digikey": "296-22599-2-ND",
      "mouser": "595-TRS3237EIDBR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T16:02:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-22599-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TRS3237EIDBR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the charge-pump flying capacitor C2, which connects between C2+ and C2−."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Network ground; the datasheet states all voltages are referenced to network GND."
      },
      {
        "number": "3",
        "name": "C2−",
        "type": "passive",
        "description": "Negative terminal of the charge-pump flying capacitor C2, which connects between C2+ and C2−."
      },
      {
        "number": "4",
        "name": "V−",
        "type": "power_out",
        "description": "Negative charge-pump output supply for the RS-232 drivers; the absolute maximum rating is −7 V, and it is raised toward GND in shutdown."
      },
      {
        "number": "5",
        "name": "DOUT1",
        "type": "output",
        "description": "RS-232 driver 1 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."
      },
      {
        "number": "6",
        "name": "DOUT2",
        "type": "output",
        "description": "RS-232 driver 2 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."
      },
      {
        "number": "7",
        "name": "DOUT3",
        "type": "output",
        "description": "RS-232 driver 3 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."
      },
      {
        "number": "8",
        "name": "RIN1",
        "type": "input",
        "description": "RS-232 receiver 1 input with ±25 V input range and ±15 kV HBM ESD protection."
      },
      {
        "number": "9",
        "name": "RIN2",
        "type": "input",
        "description": "RS-232 receiver 2 input with ±25 V input range and ±15 kV HBM ESD protection."
      },
      {
        "number": "10",
        "name": "DOUT4",
        "type": "output",
        "description": "RS-232 driver 4 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."
      },
      {
        "number": "11",
        "name": "RIN3",
        "type": "input",
        "description": "RS-232 receiver 3 input with ±25 V input range and ±15 kV HBM ESD protection."
      },
      {
        "number": "12",
        "name": "DOUT5",
        "type": "output",
        "description": "RS-232 driver 5 output, forced to high impedance in shutdown; output voltage range is limited to ±13.2 V."
      },
      {
        "number": "13",
        "name": "EN",
        "type": "input",
        "description": "Receiver enable: driving EN high puts the ROUT outputs in high impedance (ROUT1B stays active); VIH is 2 V min at VCC = 3.3 V and VIL is 0.8 V max."
      },
      {
        "number": "14",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown control: SHDN = GND disables the transmitters, forces DOUT to high impedance, and reduces supply current below 1 mA; VIL is 0.8 V max."
      },
      {
        "number": "15",
        "name": "MBAUD",
        "type": "input",
        "description": "Data-rate select: MBAUD = GND sets 250 kbit/s operation and MBAUD = VCC sets up to 1 Mbit/s operation; logic input limits are VIH 2 V min and VIL 0.8 V max."
      },
      {
        "number": "16",
        "name": "ROUT1B",
        "type": "output",
        "description": "Receiver 1 logic output that remains active at all times, regardless of the EN and SHDN states."
      },
      {
        "number": "17",
        "name": "DIN5",
        "type": "input",
        "description": "Driver 5 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."
      },
      {
        "number": "18",
        "name": "ROUT3",
        "type": "output",
        "description": "Receiver 3 logic output, forced to high impedance when EN is high."
      },
      {
        "number": "19",
        "name": "DIN4",
        "type": "input",
        "description": "Driver 4 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."
      },
      {
        "number": "20",
        "name": "ROUT2",
        "type": "output",
        "description": "Receiver 2 logic output, forced to high impedance when EN is high."
      },
      {
        "number": "21",
        "name": "ROUT1",
        "type": "output",
        "description": "Receiver 1 logic output, forced to high impedance when EN is high."
      },
      {
        "number": "22",
        "name": "DIN3",
        "type": "input",
        "description": "Driver 3 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."
      },
      {
        "number": "23",
        "name": "DIN2",
        "type": "input",
        "description": "Driver 2 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."
      },
      {
        "number": "24",
        "name": "DIN1",
        "type": "input",
        "description": "Driver 1 logic input; accepts 5-V logic with a 3.3-V supply, with VIH 2 V min and VIL 0.8 V max."
      },
      {
        "number": "25",
        "name": "C1−",
        "type": "passive",
        "description": "Negative terminal of the charge-pump flying capacitor C1, which connects between C1+ and C1−."
      },
      {
        "number": "26",
        "name": "VCC",
        "type": "power_in",
        "description": "Logic and device supply, 3 V to 5.5 V; absolute maximum rating is −0.3 V to 6 V."
      },
      {
        "number": "27",
        "name": "V+",
        "type": "power_out",
        "description": "Positive charge-pump output supply for the RS-232 drivers; absolute maximum rating is 7 V, and it is lowered to VCC in shutdown."
      },
      {
        "number": "28",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the charge-pump flying capacitor C1, which connects between C1+ and C1−."
      }
    ],
    "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 datasheet gives the DB (SSOP-28) pinout only as a shared top-view figure. Pin numbers were assig; The datasheet's Table 1 lists the TRS3237EIDBR as SSOP-DB, and the package addendum lists it as 28-p; No pins were marked N.C. or unconnected in the DB package. The N.C. pins apply only to the RHB (QFN)"
        ],
        "pages_sent": 18,
        "cost_usd": 0.101,
        "at": "2026-10-08T16:02:10"
      },
      "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
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "trs3237eidbr.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": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "trs3237eidbr-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": "25b0dd2930a0df740e78337c744463bb98f7191e52c863cb950faa36ab1c2008",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}