CAHCT126QPWRG4Q1

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  "type": "component",
  "slug": "cahct126qpwrg4q1",
  "title": "CAHCT126QPWRG4Q1",
  "brief": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-14. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "logic",
    "cahct126qpwrg4q1"
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  "component": {
    "mpn": "CAHCT126QPWRG4Q1",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn74ahct126-q1",
    "parts": {
      "symbol": "cahct126qpwrg4q1.kicad_sym",
      "footprint": "cahct126qpwrg4q1.kicad_mod",
      "model_3d": "cahct126qpwrg4q1-etched.glb",
      "model_3d_plain": "cahct126qpwrg4q1.glb",
      "model_3d_step": "cahct126qpwrg4q1-etched.step",
      "model_3d_step_plain": "cahct126qpwrg4q1.step",
      "lbr": "cahct126qpwrg4q1.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Output-enable input for buffer 1. When 1OE is high, the buffer passes 1A to 1Y; when low, 1Y is placed in the high-impedance (Hi-Z) state. TTL-compatible input; VIH ≥ 2 V, VIL ≤ 0.8 V."
      },
      {
        "number": "2",
        "name": "1A",
        "type": "input",
        "description": "Data input to buffer 1. Driven through the 3-state buffer to output 1Y when 1OE is high. TTL-compatible input; VIH ≥ 2 V, VIL ≤ 0.8 V, VI range 0-5.5 V."
      },
      {
        "number": "3",
        "name": "1Y",
        "type": "tri_state",
        "description": "3-state output of buffer 1. Drives the buffered value of 1A when 1OE is high; Hi-Z when 1OE is low. Guaranteed drive is ±8 mA at VCC = 5 V (VOH ≥ 3.94 V, VOL ≤ 0.36 V)."
      },
      {
        "number": "4",
        "name": "2OE",
        "type": "input",
        "description": "Output-enable input for buffer 2. When 2OE is high, the buffer passes 2A to 2Y; when low, 2Y is Hi-Z. TTL-compatible input; VIH ≥ 2 V, VIL ≤ 0.8 V."
      },
      {
        "number": "5",
        "name": "2A",
        "type": "input",
        "description": "Data input to buffer 2. Driven through the 3-state buffer to output 2Y when 2OE is high. TTL-compatible input; VIH ≥ 2 V, VIL ≤ 0.8 V, VI range 0-5.5 V."
      },
      {
        "number": "6",
        "name": "2Y",
        "type": "tri_state",
        "description": "3-state output of buffer 2. Drives the buffered value of 2A when 2OE is high; Hi-Z when 2OE is low. Guaranteed drive is ±8 mA at VCC = 5 V."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device. Connect to the system ground plane; a local decoupling capacitor from VCC to GND is recommended."
      },
      {
        "number": "8",
        "name": "3Y",
        "type": "tri_state",
        "description": "3-state output of buffer 3. Drives the buffered value of 3A when 3OE is high; Hi-Z when 3OE is low. Guaranteed drive is ±8 mA at VCC = 5 V."
      },
      {
        "number": "9",
        "name": "3A",
        "type": "input",
        "description": "Data input to buffer 3. Driven through the 3-state buffer to output 3Y when 3OE is high. TTL-compatible input; VIH ≥ 2 V, VIL ≤ 0.8 V, VI range 0-5.5 V."
      },
      {
        "number": "10",
        "name": "3OE",
        "type": "input",
        "description": "Output-enable input for buffer 3. When 3OE is high, the buffer passes 3A to 3Y; when low, 3Y is Hi-Z. TTL-compatible input; VIH ≥ 2 V, VIL ≤ 0.8 V."
      },
      {
        "number": "11",
        "name": "4Y",
        "type": "tri_state",
        "description": "3-state output of buffer 4. Drives the buffered value of 4A when 4OE is high; Hi-Z when 4OE is low. Guaranteed drive is ±8 mA at VCC = 5 V."
      },
      {
        "number": "12",
        "name": "4A",
        "type": "input",
        "description": "Data input to buffer 4. Driven through the 3-state buffer to output 4Y when 4OE is high. TTL-compatible input; VIH ≥ 2 V, VIL ≤ 0.8 V, VI range 0-5.5 V."
      },
      {
        "number": "13",
        "name": "4OE",
        "type": "input",
        "description": "Output-enable input for buffer 4. When 4OE is high, the buffer passes 4A to 4Y; when low, 4Y is Hi-Z. TTL-compatible input; VIH ≥ 2 V, VIL ≤ 0.8 V."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input. Operating range 4.5 V to 5.5 V; absolute maximum 7 V. Decouple to GND with a local ceramic capacitor (e.g. 100 nF) near the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74ahct126-q1",
        "pages": null,
        "sha256": "7161780ff9b93586",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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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": "3ee5786aae56190997aa793ba3cfc003fd616782770e29719b4562f012982245",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-14",
      "Category": "Logic",
      "Pins": "14"
    }
  },
  "variants": [
    {
      "mpn": "CAHCT126QPWRG4Q1",
      "kind": "packaging"
    },
    {
      "mpn": "CAHCT126QPWRG4Q1D",
      "kind": "packaging"
    },
    {
      "mpn": "CAHCT126QPWRG4Q1DR",
      "kind": "packaging"
    },
    {
      "mpn": "CAHCT126QPWRG4Q1BQA",
      "kind": "packaging"
    }
  ],
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "CAHCT126QPWRG4Q1 (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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    "cahct126qpwrg4q1.lbr",
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  "visibility": {
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  "updated_at": "2026-09-24T18:25:57.434Z"
}