74LVX4245MTCX

{
  "schema_version": 1,
  "type": "component",
  "slug": "74lvx4245mtcx",
  "title": "74LVX4245MTCX",
  "brief": "onsemi Buffer/Driver/Transceiver, TSSOP-24. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "74lvx4245mtcx"
  ],
  "component": {
    "mpn": "74LVX4245MTCX",
    "manufacturer": "onsemi",
    "package": "TSSOP-24",
    "pin_count": 24,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/74lvx4245mtcx-d.pdf",
    "parts": {
      "symbol": "74lvx4245mtcx.kicad_sym",
      "footprint": "74lvx4245mtcx.kicad_mod",
      "model_3d": "74lvx4245mtcx-etched.glb",
      "model_3d_plain": "74lvx4245mtcx.glb",
      "model_3d_step": "74lvx4245mtcx-etched.step",
      "model_3d_step_plain": "74lvx4245mtcx.step",
      "lbr": "74lvx4245mtcx.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VCCA",
        "type": "power_in",
        "description": "A-side supply voltage, 4.5V to 5.5V. Powers the 5V A-port I/O and the control logic; must be powered up before VCCB."
      },
      {
        "number": "2",
        "name": "T/R",
        "type": "input",
        "description": "Transmit/Receive direction control input, referenced to VCCA. HIGH = A-to-B (transmit); LOW = B-to-A (receive). TTL-compatible."
      },
      {
        "number": "3",
        "name": "A0",
        "type": "bidirectional",
        "description": "A-side bit 0. 5V bus I/O; sources/sinks 24 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "4",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-side bit 1. 5V bus I/O; sources/sinks 24 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "5",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-side bit 2. 5V bus I/O; sources/sinks 24 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "6",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-side bit 3. 5V bus I/O; sources/sinks 24 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "7",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-side bit 4. 5V bus I/O; sources/sinks 24 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "8",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-side bit 5. 5V bus I/O; sources/sinks 24 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "9",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-side bit 6. 5V bus I/O; sources/sinks 24 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "10",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-side bit 7. 5V bus I/O; sources/sinks 24 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for both A- and B-side circuitry. Tie to system ground; both GND pins (11 and 12) must be connected."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for both A- and B-side circuitry. Tie to system ground; both GND pins (11 and 12) must be connected."
      },
      {
        "number": "13",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for both A- and B-side circuitry. Tie to system ground; both GND pins (13 and 14) must be connected."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for both A- and B-side circuitry. Tie to system ground; both GND pins (13 and 14) must be connected."
      },
      {
        "number": "15",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-side bit 7. 3V bus I/O; sources/sinks 12 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "16",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-side bit 6. 3V bus I/O; sources/sinks 12 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "17",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-side bit 5. 3V bus I/O; sources/sinks 12 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "18",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-side bit 4. 3V bus I/O; sources/sinks 12 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "19",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-side bit 3. 3V bus I/O; sources/sinks 12 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "20",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-side bit 2. 3V bus I/O; sources/sinks 12 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "21",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-side bit 1. 3V bus I/O; sources/sinks 12 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "22",
        "name": "B0",
        "type": "bidirectional",
        "description": "B-side bit 0. 3V bus I/O; sources/sinks 12 mA. Tri-stated when OE is HIGH; direction set by T/R."
      },
      {
        "number": "23",
        "name": "OE",
        "type": "input",
        "description": "Active-LOW Output Enable. When HIGH, both A and B ports are placed in HIGH-Z (3-STATE). TTL-compatible; should ramp with or ahead of VCCA at power-up to prevent bus contention."
      },
      {
        "number": "24",
        "name": "VCCB",
        "type": "power_in",
        "description": "B-side supply voltage, 2.7V to 3.6V. Powers the 3V B-port I/O; power up after VCCA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/74lvx4245mtcx-d.pdf",
        "pages": 8,
        "sha256": "763a22477bfe4497",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "logic": {
      "family_id": "74LVX4245",
      "logic_family": "74LVX",
      "function_code": "4245",
      "function_class": "Transceiver",
      "function_name": "Octal Dual-Supply Bus Transceiver",
      "manufacturer": null,
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "74lvx4245mtcx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74lvx4245mtcx-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77e7845ad9c05ec84cc2cace8fab2f2e7cb44d3a35a1362c6ffe3479927a824f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TSSOP-24",
      "Category": "Logic",
      "Pins": "24"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "74lvx4245mtcx"
  ],
  "discovery_pitch": "74LVX4245MTCX (onsemi) 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",
    "74lvx4245mtcx.kicad_sym",
    "74lvx4245mtcx.kicad_mod",
    "74lvx4245mtcx.glb",
    "74lvx4245mtcx.step",
    "74lvx4245mtcx-etched.step",
    "74lvx4245mtcx.lbr",
    "docs/hero.png",
    "docs/74lvx4245mtcx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T15:17:38.147Z"
}