TRS3318EIPWR

{
  "schema_version": 1,
  "type": "component",
  "slug": "trs3318eipwr",
  "title": "TRS3318EIPWR",
  "brief": "Texas Instruments RS232 ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "interface",
    "trs3318eipwr",
    "factory-2.0.0",
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  "component": {
    "mpn": "TRS3318EIPWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/trs3318e",
    "parts": {
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      "footprint": "trs3318eipwr.kicad_mod",
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      "model_3d_step": "trs3318eipwr-etched.step",
      "model_3d_step_plain": "trs3318eipwr.step",
      "lbr": "trs3318eipwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2671389",
      "digikey": "296-25062-2-ND",
      "mouser": "595-TRS3318EIPWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T16:02:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-25062-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TRS3318EIPWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "READY",
        "type": "output",
        "description": "Ready-to-transmit output, active high; it is enabled high when V− goes below −3.5 V and the device is ready to transmit."
      },
      {
        "number": "2",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the voltage-doubler charge-pump capacitor; the datasheet specifies four 0.1-µF charge-pump capacitors."
      },
      {
        "number": "3",
        "name": "V+",
        "type": "power_out",
        "description": "Charge-pump output at 2 × VCC generated internally; it requires an external 0.1-µF reservoir capacitor per the typical application circuit."
      },
      {
        "number": "4",
        "name": "C1−",
        "type": "passive",
        "description": "Negative terminal of the voltage-doubler charge-pump capacitor; the datasheet specifies four 0.1-µF charge-pump capacitors."
      },
      {
        "number": "5",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump capacitor; the datasheet specifies four 0.1-µF charge-pump capacitors."
      },
      {
        "number": "6",
        "name": "C2−",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump capacitor; the datasheet specifies four 0.1-µF charge-pump capacitors."
      },
      {
        "number": "7",
        "name": "V−",
        "type": "power_out",
        "description": "Charge-pump output at −2 × VCC generated internally; absolute maximum V− to GND is −7 V to 0.3 V."
      },
      {
        "number": "8",
        "name": "DOUT2",
        "type": "output",
        "description": "RS-232 driver output 2; absolute maximum DOUT to GND is ±13.2 V and the output is continuously short-circuit protected to GND."
      },
      {
        "number": "9",
        "name": "RIN2",
        "type": "input",
        "description": "RS-232 receiver input 2; the recommended receiver input voltage range is −25 V to 25 V."
      },
      {
        "number": "10",
        "name": "ROUT2",
        "type": "output",
        "description": "CMOS receiver output 2, referenced to VCC (absolute maximum −0.3 V to VCC + 0.3 V)."
      },
      {
        "number": "11",
        "name": "INVALID",
        "type": "output",
        "description": "Valid-signal detector output, active low; a logic high indicates a valid RS-232 level is present on a receiver input, and it is driven low when all receiver inputs stay between −0.3 V and 0.3 V for more than 30 µs."
      },
      {
        "number": "12",
        "name": "DIN2",
        "type": "input",
        "description": "CMOS driver input 2; with VCC = 2.5 V to 3 V it requires VIH of at least 0.7 × VCC and VIL of at most 0.3 × VCC, with a maximum input of 5.5 V."
      },
      {
        "number": "13",
        "name": "DIN1",
        "type": "input",
        "description": "CMOS driver input 1; with VCC = 2.5 V to 3 V it requires VIH of at least 0.7 × VCC and VIL of at most 0.3 × VCC, with a maximum input of 5.5 V."
      },
      {
        "number": "14",
        "name": "FORCEON",
        "type": "input",
        "description": "Force-on input, active high; driving it high overrides auto-powerdown and keeps the transmitters on, provided FORCEOFF is high, with absolute maximum input −0.3 V to 6 V."
      },
      {
        "number": "15",
        "name": "ROUT1",
        "type": "output",
        "description": "CMOS receiver output 1, referenced to VCC (absolute maximum −0.3 V to VCC + 0.3 V)."
      },
      {
        "number": "16",
        "name": "RIN1",
        "type": "input",
        "description": "RS-232 receiver input 1; the recommended receiver input voltage range is −25 V to 25 V."
      },
      {
        "number": "17",
        "name": "DOUT1",
        "type": "output",
        "description": "RS-232 driver output 1; absolute maximum DOUT to GND is ±13.2 V and the output is continuously short-circuit protected to GND."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device; VCC to GND absolute maximum is −0.3 V to 6 V."
      },
      {
        "number": "19",
        "name": "VCC",
        "type": "power_in",
        "description": "Single-supply input of 2.25 V to 3 V; VCC to GND absolute maximum is −0.3 V to 6 V."
      },
      {
        "number": "20",
        "name": "FORCEOFF",
        "type": "input",
        "description": "Force-off input, active low; driving it low powers down the transmitters and charge pump and overrides auto-powerdown and FORCEON, with absolute maximum input −0.3 V to 6 V."
      }
    ],
    "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 numbers are taken from the Terminal Functions table on page 3 and cross-checked against the TSSO; Some descriptions combine the terminal-function text with absolute-maximum or recommended-operating "
        ],
        "pages_sent": 23,
        "cost_usd": 0.0954,
        "at": "2026-10-08T16:02:21"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/trs3318e",
        "pages": 23,
        "sha256": "3758ceb856a8087f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "zmin_mm": 0,
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        "sha256": "5e2a1ccc4f3b396ac4422367228384af7a9efc7f5cd731a7041b0b9685c77620",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-20",
      "Category": "Interface",
      "Pins": "20"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_pitch": "TRS3318EIPWR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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