CD4543BM

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd4543bm",
  "title": "CD4543BM",
  "brief": "HGSEMI LCD Drivers, SOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "cd4543bm"
  ],
  "component": {
    "mpn": "CD4543BM",
    "manufacturer": "HGSEMI",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "LED-drv",
    "subcategory": "LCD Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a341cf66f64d18cbd9ed9e9b4f9f1896.pdf",
    "parts": {
      "symbol": "cd4543bm.kicad_sym",
      "footprint": "cd4543bm.kicad_mod",
      "model_3d": "cd4543bm-etched.glb",
      "model_3d_plain": "cd4543bm.glb",
      "model_3d_step": "cd4543bm-etched.step",
      "model_3d_step_plain": "cd4543bm.step",
      "lbr": "cd4543bm.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "LD",
        "type": "input",
        "description": "Latch Disable input. When LD = 1 the BCD inputs (A-D) are passed through to the decoder; when LD = 0 the last BCD code is stored in the 4-bit latch and the outputs are frozen."
      },
      {
        "number": "2",
        "name": "C",
        "type": "input",
        "description": "BCD data input, bit C (weight 4) of the 8421 BCD code. CMOS logic input referenced to VSS/VDD."
      },
      {
        "number": "3",
        "name": "B",
        "type": "input",
        "description": "BCD data input, bit B (weight 2) of the 8421 BCD code. CMOS logic input referenced to VSS/VDD."
      },
      {
        "number": "4",
        "name": "D",
        "type": "input",
        "description": "BCD data input, bit D (weight 8, MSB) of the 8421 BCD code. CMOS logic input referenced to VSS/VDD."
      },
      {
        "number": "5",
        "name": "A",
        "type": "input",
        "description": "BCD data input, bit A (weight 1, LSB) of the 8421 BCD code. CMOS logic input referenced to VSS/VDD."
      },
      {
        "number": "6",
        "name": "Ph",
        "type": "input",
        "description": "Phase input. For LCD readouts apply a square wave (VSS to VDD) common with the backplane drive. For common-cathode LED select Ph = 0; for common-anode LED select Ph = 1 to invert the segment output combinations."
      },
      {
        "number": "7",
        "name": "BI",
        "type": "input",
        "description": "Blanking input. When BI = 1 all seven segment outputs (a-g) are forced to the blank state (all 0 with Ph = 0). Normal decode occurs when BI = 0."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply / ground reference. Tied to 0 V in single-supply operation."
      },
      {
        "number": "9",
        "name": "a",
        "type": "output",
        "description": "Seven-segment decoded output 'a'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input."
      },
      {
        "number": "10",
        "name": "b",
        "type": "output",
        "description": "Seven-segment decoded output 'b'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input."
      },
      {
        "number": "11",
        "name": "c",
        "type": "output",
        "description": "Seven-segment decoded output 'c'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input."
      },
      {
        "number": "12",
        "name": "d",
        "type": "output",
        "description": "Seven-segment decoded output 'd'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input."
      },
      {
        "number": "13",
        "name": "e",
        "type": "output",
        "description": "Seven-segment decoded output 'e'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input."
      },
      {
        "number": "14",
        "name": "g",
        "type": "output",
        "description": "Seven-segment decoded output 'g' (middle segment). Directly drives an LCD/LED/VF segment; polarity is set by the Ph input."
      },
      {
        "number": "15",
        "name": "f",
        "type": "output",
        "description": "Seven-segment decoded output 'f'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply pin. Recommended operating range 3.0 V to 15 V (absolute max 18 V)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a341cf66f64d18cbd9ed9e9b4f9f1896.pdf",
        "pages": 12,
        "sha256": "e4c42b550d773708",
        "source_tier": "lcsc"
      },
      "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": [
        -2.475,
        -4.445
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "CD4543",
      "logic_family": "CD4000",
      "function_code": "4543",
      "function_class": "Decoder",
      "function_name": "BCD-to-7-Segment Latch/Decoder/Driver (LCD-capable)",
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "cd4543bm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd4543bm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "def719d877ad622a1098a17eaae0addda14f6ce905fe7ae509ec6b43ef87d524",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOP-16",
      "Category": "LED-drv",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cd4543bm"
  ],
  "discovery_pitch": "CD4543BM (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd4543bm.kicad_sym",
    "cd4543bm.kicad_mod",
    "cd4543bm.glb",
    "cd4543bm.step",
    "cd4543bm.lbr",
    "docs/hero.png",
    "docs/cd4543bm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd4543bm-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CD4543BMBE",
      "kind": "packaging"
    },
    {
      "mpn": "CD4543BMBN",
      "kind": "packaging"
    },
    {
      "mpn": "CD4543BM/TR",
      "kind": "packaging"
    },
    {
      "mpn": "CD4543BMT/TR",
      "kind": "packaging"
    },
    {
      "mpn": "CD4543BMBLQ/TR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T18:52:20.623Z"
}