SN74LVTH245APWR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74lvth245apwr",
  "title": "SN74LVTH245APWR",
  "brief": "Texas Instruments Buffer/Driver/Transceiver, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "sn74lvth245apwr"
  ],
  "component": {
    "mpn": "SN74LVTH245APWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74lvth245a.pdf",
    "parts": {
      "symbol": "sn74lvth245apwr.kicad_sym",
      "footprint": "sn74lvth245apwr.kicad_mod",
      "model_3d": "sn74lvth245apwr-etched.glb",
      "model_3d_plain": "sn74lvth245apwr.glb",
      "model_3d_step": "sn74lvth245apwr-etched.step",
      "model_3d_step_plain": "sn74lvth245apwr.step",
      "lbr": "sn74lvth245apwr.lbr"
    },
    "distributor_links": {
      "digikey": "296-1272-2-ND",
      "lcsc": "C2652121"
    },
    "pins": [
      {
        "number": "1",
        "name": "DIR",
        "type": "input",
        "description": "Direction control. When DIR=L, data flows from B to A; when DIR=H, data flows from A to B. TTL-compatible input, VIH ≥ 2 V, VIL ≤ 0.8 V."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "bidirectional",
        "description": "Channel-1 A-side bus port. Input or 3-state output depending on DIR and /OE. Includes active bus-hold circuitry to hold unused inputs at a valid logic level."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "bidirectional",
        "description": "Channel-2 A-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "bidirectional",
        "description": "Channel-3 A-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "bidirectional",
        "description": "Channel-4 A-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "bidirectional",
        "description": "Channel-5 A-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "bidirectional",
        "description": "Channel-6 A-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "bidirectional",
        "description": "Channel-7 A-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "bidirectional",
        "description": "Channel-8 A-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference (0 V)."
      },
      {
        "number": "11",
        "name": "B8",
        "type": "bidirectional",
        "description": "Channel-8 B-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "12",
        "name": "B7",
        "type": "bidirectional",
        "description": "Channel-7 B-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "13",
        "name": "B6",
        "type": "bidirectional",
        "description": "Channel-6 B-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "14",
        "name": "B5",
        "type": "bidirectional",
        "description": "Channel-5 B-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "15",
        "name": "B4",
        "type": "bidirectional",
        "description": "Channel-4 B-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "16",
        "name": "B3",
        "type": "bidirectional",
        "description": "Channel-3 B-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "17",
        "name": "B2",
        "type": "bidirectional",
        "description": "Channel-2 B-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "18",
        "name": "B1",
        "type": "bidirectional",
        "description": "Channel-1 B-side bus port. Input or 3-state output depending on DIR and /OE. Includes bus-hold."
      },
      {
        "number": "19",
        "name": "/OE",
        "type": "input",
        "description": "Active-low output enable. When /OE=L the transceiver is enabled and drives the destination bus per DIR; when /OE=H both A and B ports are in the high-impedance (isolation) state. Should be tied to VCC through a pull-up during power sequencing to guarantee Hi-Z at power-up/down."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "3.3-V supply input. Recommended VCC = 2.7 V to 3.6 V; absolute max 4.6 V. Bypass locally with a 0.1 µF ceramic to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74lvth245a.pdf",
        "pages": 30,
        "sha256": "7af52ff8d823ffed",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.8625,
        -2.925
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-20_4.4x6.5mm_P0.65mm@sha256:b7ca3a31dd45c122",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74LVTH245",
      "logic_family": "74LVTH",
      "function_code": "245",
      "function_class": "Transceiver",
      "function_name": "Octal Bus Transceiver, 3-State",
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "sn74lvth245apwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74lvth245apwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "18ff1ab0c1d4f7f109d36daffe97412602e58fec97378c601fc4ad8d9c5434de",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-20",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sn74lvth245apwr"
  ],
  "discovery_pitch": "SN74LVTH245APWR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74lvth245apwr.kicad_sym",
    "sn74lvth245apwr.kicad_mod",
    "sn74lvth245apwr.glb",
    "sn74lvth245apwr.step",
    "sn74lvth245apwr-etched.step",
    "sn74lvth245apwr.lbr",
    "docs/hero.png",
    "docs/sn74lvth245apwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SN74LVTH245APWR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRAPWE4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRAPWG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRE4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADBR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADBR.B",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADBR1G4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADBR1G4.B",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADWR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADW.B",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADWR.B",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRADWRG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRANSR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRANS.B",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRANSR.B",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRANSRG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRARGYR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRARGYR.B",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRARGYRG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRARGYRG4.B",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRAFK",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRAJ",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRAW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRAGQNR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVTH245APWRAZQNR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T07:51:02.541Z"
}