SN74AVC4T245PWR

{
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  "type": "component",
  "slug": "sn74avc4t245pwr",
  "title": "SN74AVC4T245PWR",
  "brief": "Texas Instruments Buffer/Driver/Transceiver, TSSOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "logic",
    "sn74avc4t245pwr"
  ],
  "component": {
    "mpn": "SN74AVC4T245PWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74avc4t245.pdf",
    "parts": {
      "symbol": "sn74avc4t245pwr.kicad_sym",
      "footprint": "sn74avc4t245pwr.kicad_mod",
      "model_3d": "sn74avc4t245pwr-etched.glb",
      "model_3d_plain": "sn74avc4t245pwr.glb",
      "model_3d_step": "sn74avc4t245pwr-etched.step",
      "model_3d_step_plain": "sn74avc4t245pwr.step",
      "lbr": "sn74avc4t245pwr.lbr"
    },
    "distributor_links": {
      "digikey": "296-18056-2-ND",
      "lcsc": "C81461"
    },
    "pins": [
      {
        "number": "1",
        "name": "VCCA",
        "type": "power_in",
        "description": "A-port power supply. Sets the A-port I/O voltage and references the DIR and OE control inputs. Operating range 1.2V to 3.6V (absolute max 4.6V)."
      },
      {
        "number": "2",
        "name": "1DIR",
        "type": "input",
        "description": "Direction-control input for the '1' 2-bit port pair (1A1/1A2 <-> 1B1/1B2). HIGH sends data from A to B, LOW sends data from B to A. Referenced to VCCA."
      },
      {
        "number": "3",
        "name": "2DIR",
        "type": "input",
        "description": "Direction-control input for the '2' 2-bit port pair (2A1/2A2 <-> 2B1/2B2). HIGH sends data from A to B, LOW sends data from B to A. Referenced to VCCA."
      },
      {
        "number": "4",
        "name": "1A1",
        "type": "bidirectional",
        "description": "Bidirectional data I/O bit 1 of the '1' A-port. Referenced to VCCA; drives up to ~12mA at VCCA=3.3V."
      },
      {
        "number": "5",
        "name": "1A2",
        "type": "bidirectional",
        "description": "Bidirectional data I/O bit 2 of the '1' A-port. Referenced to VCCA."
      },
      {
        "number": "6",
        "name": "2A1",
        "type": "bidirectional",
        "description": "Bidirectional data I/O bit 1 of the '2' A-port. Referenced to VCCA."
      },
      {
        "number": "7",
        "name": "2A2",
        "type": "bidirectional",
        "description": "Bidirectional data I/O bit 2 of the '2' A-port. Referenced to VCCA."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Both GND pins (8 and 9) must be tied to the system ground."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Both GND pins (8 and 9) must be tied to the system ground."
      },
      {
        "number": "10",
        "name": "2B2",
        "type": "bidirectional",
        "description": "Bidirectional data I/O bit 2 of the '2' B-port. Referenced to VCCB."
      },
      {
        "number": "11",
        "name": "2B1",
        "type": "bidirectional",
        "description": "Bidirectional data I/O bit 1 of the '2' B-port. Referenced to VCCB."
      },
      {
        "number": "12",
        "name": "1B2",
        "type": "bidirectional",
        "description": "Bidirectional data I/O bit 2 of the '1' B-port. Referenced to VCCB."
      },
      {
        "number": "13",
        "name": "1B1",
        "type": "bidirectional",
        "description": "Bidirectional data I/O bit 1 of the '1' B-port. Referenced to VCCB."
      },
      {
        "number": "14",
        "name": "2OE",
        "type": "input",
        "description": "Active-LOW output enable for the '2' port pair. Pull HIGH to place 2A1/2A2/2B1/2B2 in the high-impedance (3-state) mode. Referenced to VCCA."
      },
      {
        "number": "15",
        "name": "1OE",
        "type": "input",
        "description": "Active-LOW output enable for the '1' port pair. Pull HIGH to place 1A1/1A2/1B1/1B2 in the high-impedance (3-state) mode. Referenced to VCCA."
      },
      {
        "number": "16",
        "name": "VCCB",
        "type": "power_in",
        "description": "B-port power supply. Sets the B-port I/O voltage. Operating range 1.2V to 3.6V (absolute max 4.6V)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74avc4t245.pdf",
        "pages": 46,
        "sha256": "218e7e3a60f567bb",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.8625,
        -2.275
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-16_4.4x5mm_P0.65mm@sha256:fbac79fc5f310754",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74AVC4T245",
      "logic_family": "74AVC",
      "function_code": "4T245",
      "function_class": null,
      "function_name": null,
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74avc4t245pwr-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2918e0d8041b149b3cb306889ec40e1366163c7455e8c87a4719331487489eee",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-16",
      "Category": "Logic",
      "Pins": "16"
    }
  },
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "SN74AVC4T245PWR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "variants": [
    {
      "mpn": "SN74AVC4T245PWR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRD",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRDR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRDGV",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRDGVR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRRGY",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRRGYR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRBQB",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRBQBR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRWBQB",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRRSV",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRRSVR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRDYY",
      "kind": "packaging"
    },
    {
      "mpn": "SN74AVC4T245PWRDYYR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T06:52:59.902Z"
}