TPT485E-SO1R

{
  "schema_version": 1,
  "type": "component",
  "slug": "tpt485e-so1r",
  "title": "TPT485E-SO1R",
  "brief": "3PEAK RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "tpt485e-so1r"
  ],
  "component": {
    "mpn": "TPT485E-SO1R",
    "manufacturer": "3PEAK",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2203092030_3PEAK-TPT485E-SO1R_C2981238.pdf",
    "parts": {
      "symbol": "tpt485e-so1r.kicad_sym",
      "footprint": "tpt485e-so1r.kicad_mod",
      "model_3d": "tpt485e-so1r-etched.glb",
      "model_3d_plain": "tpt485e-so1r.glb",
      "model_3d_step": "tpt485e-so1r-etched.step",
      "model_3d_step_plain": "tpt485e-so1r.step",
      "lbr": "tpt485e-so1r.lbr"
    },
    "distributor_links": {
      "lcsc": "C2981238"
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver Output. Digital CMOS output carrying the recovered data from the differential bus (A-B). Logic high when VID > VIT+ (typ -15 mV); high-Z when receiver is disabled (/RE = high or open). VOH ≥ 4.0V @ IOH = -8 mA; VOL ≤ 0.4V @ IOL = 8 mA."
      },
      {
        "number": "2",
        "name": "/RE",
        "type": "input",
        "description": "Receiver Output Enable, active low. Drive low to enable the receiver output RO; drive high (or leave open) to place RO in high-Z. VIH = 2V min, VIL = 0.8V max. Tie to GND for permanent receive mode."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver Output Enable, active high. Drive high to enable the differential driver onto A/B; drive low (or leave open) to place A/B in high-Z (driver disabled). VIH = 2V min, VIL = 0.8V max."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver Input. Digital CMOS input that drives the RS-485 differential bus when DE is asserted. DI=H drives A high / B low; DI=L drives A low / B high. If DI is left open with DE high, the driver defaults to the 'bus high' state (A high, B low). VIH = 2V min, VIL = 0.8V max."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device. Connect to system ground."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Noninverting RS-485 bus pin: driver noninverting output and receiver noninverting input. Withstands -15V to +15V continuous and ±100V transient (through 100Ω), ±18kV HBM and ±12kV IEC61000-4-2 contact discharge. Bus input impedance ≥ 96 kΩ (1/8 unit load). Common-mode range -7V to +12V."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting RS-485 bus pin: driver inverting output and receiver inverting input. Same protection and impedance ratings as A. Together with A forms the differential RS-485 pair (VID = VA - VB)."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input, 4.5V to 5.5V (absolute max 7V). Decouple to GND with a 0.1 µF ceramic capacitor near the pin. Typical quiescent supply current is 650 µA with both driver and receiver enabled; <1 µA in shutdown (DE=GND, /RE=DI=VCC)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2203092030_3PEAK-TPT485E-SO1R_C2981238.pdf",
        "pages": 8,
        "sha256": "43d4afd779e259fc",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "tpt485e-so1r.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tpt485e-so1r-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "8041d2b4521f0d81ed486cc2c194d2f9819387434a72e6035fa3cb12edc6e324",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "3PEAK",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tpt485e-so1r"
  ],
  "discovery_pitch": "TPT485E-SO1R (3PEAK) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tpt485e-so1r.kicad_sym",
    "tpt485e-so1r.kicad_mod",
    "tpt485e-so1r.glb",
    "tpt485e-so1r.step",
    "tpt485e-so1r-etched.step",
    "tpt485e-so1r.lbr",
    "docs/hero.png",
    "docs/tpt485e-so1r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "TPT485E-SO1R",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T12:51:58.146Z"
}