TP8485E-SR

{
  "schema_version": 1,
  "type": "component",
  "slug": "tp8485e-sr",
  "title": "TP8485E-SR",
  "brief": "3PEAK RS-485 / RS-422 ICs, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "tp8485e-sr"
  ],
  "component": {
    "mpn": "TP8485E-SR",
    "manufacturer": "3PEAK",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5028361a5ce54ad5bc5b997e6139f019.pdf",
    "parts": {
      "symbol": "tp8485e-sr.kicad_sym",
      "footprint": "tp8485e-sr.kicad_mod",
      "model_3d": "tp8485e-sr-etched.glb",
      "model_3d_plain": "tp8485e-sr.glb",
      "model_3d_step": "tp8485e-sr-etched.step",
      "model_3d_step_plain": "tp8485e-sr.step",
      "lbr": "tp8485e-sr.lbr"
    },
    "distributor_links": {
      "lcsc": "C94206"
    },
    "pins": [
      {
        "number": "1",
        "name": "R",
        "type": "output",
        "description": "Receiver output. CMOS logic level output derived from the differential bus (A/Y − B/Z). High-Z when the receiver is disabled (/RE = high or open). VOH ≥ 4.64 V and VOL ≤ 0.27 V at ±8 mA drive with VCC = 5 V."
      },
      {
        "number": "2",
        "name": "/RE",
        "type": "input",
        "description": "Receiver enable, active low. Drive low to enable the receiver output R; drive high or leave open to place R in high-impedance. CMOS input, typical input current 10 nA."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver enable, active high. Drive high to enable the differential driver outputs A/Y and B/Z; drive low or leave open to place the driver outputs in high-impedance. CMOS input, typical input current 10 nA."
      },
      {
        "number": "4",
        "name": "D",
        "type": "input",
        "description": "Driver data input. CMOS logic level input; when the driver is enabled, D=H drives A/Y high and B/Z low, D=L drives the opposite. Left open the driver behaves as if D=H (actively drives bus high). Referenced to VCC/GND."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return for the device. Connect to the system ground plane; also serves as the reference for the bus common-mode voltage range of -8 V to +13 V."
      },
      {
        "number": "6",
        "name": "A/Y",
        "type": "bidirectional",
        "description": "Non-inverting RS-485 bus pin. Acts as receiver input A when the driver is disabled and as driver output Y when the driver is enabled. Withstands -15 V to +15 V DC and ±18 kV IEC61000-4-2 air-gap ESD; common-mode range -8 V to +13 V."
      },
      {
        "number": "7",
        "name": "B/Z",
        "type": "bidirectional",
        "description": "Inverting RS-485 bus pin. Acts as receiver input B when the driver is disabled and as driver output Z when the driver is enabled. Same absolute ratings as A/Y: -15 V to +15 V DC, ±18 kV IEC61000-4-2 air-gap ESD, common-mode -8 V to +13 V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 3.0 V to 5.5 V recommended (absolute max 7 V). Bypass locally with a 100 nF ceramic capacitor to GND. Quiescent supply current is typically 695 µA with both driver and receiver enabled and no load."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5028361a5ce54ad5bc5b997e6139f019.pdf",
        "pages": 15,
        "sha256": "f7225ec86054a77b",
        "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": "tp8485e-sr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tp8485e-sr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "114f2798fa65616a2e218d3f53c902f63af4c0276bb2c4e7ee160c5e1580f75c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "3PEAK",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tp8485e-sr"
  ],
  "discovery_pitch": "TP8485E-SR (3PEAK) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tp8485e-sr.kicad_sym",
    "tp8485e-sr.kicad_mod",
    "tp8485e-sr.glb",
    "tp8485e-sr.step",
    "tp8485e-sr-etched.step",
    "tp8485e-sr.lbr",
    "docs/hero.png",
    "docs/tp8485e-sr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "TP8485E-SR",
      "kind": "packaging"
    },
    {
      "mpn": "TP8485E-SRVR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T11:27:40.756Z"
}