CD4541BPWR

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd4541bpwr",
  "title": "CD4541BPWR",
  "brief": "Texas Instruments Timers / Counters, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "clock-timing",
    "cd4541bpwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CD4541BPWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd4541b.pdf",
    "parts": {
      "symbol": "cd4541bpwr.kicad_sym",
      "footprint": "cd4541bpwr.kicad_mod",
      "model_3d": "cd4541bpwr-etched.glb",
      "model_3d_plain": "cd4541bpwr.glb",
      "model_3d_step": "cd4541bpwr-etched.step",
      "model_3d_step_plain": "cd4541bpwr.step",
      "lbr": "cd4541bpwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2651359"
    },
    "pins": [
      {
        "number": "1",
        "name": "RTC",
        "type": "passive",
        "description": "Timing resistor terminal for the internal RC oscillator; used with CTC (and RS) to set oscillator frequency per f = 1/(2.3·RTC·CTC), valid for f between 1kHz and 100kHz."
      },
      {
        "number": "2",
        "name": "CTC",
        "type": "passive",
        "description": "Timing capacitor terminal for the internal RC oscillator; used with RTC to set the oscillator frequency (1kHz to 100kHz range)."
      },
      {
        "number": "3",
        "name": "RS",
        "type": "passive",
        "description": "Oscillator bias resistor terminal (RS ≥ 10kΩ, 2·RTC ≈ RS per oscillator equation); this pin can alternatively accept an external clock input in place of the internal oscillator."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "5",
        "name": "AUTO RESET",
        "type": "input",
        "description": "Logic 0 enables Auto Reset so counting starts automatically on power-up (recommended VDD > 5V for reliable auto reset); logic 1 disables Auto Reset, requiring a positive Master Reset pulse to start counting; enabling this input draws additional supply current."
      },
      {
        "number": "6",
        "name": "MASTER RESET",
        "type": "input",
        "description": "A positive pulse on this input resets the internal counter and output latch; logic 0 = Master Reset off, logic 1 = Master Reset on."
      },
      {
        "number": "7",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply / ground reference terminal; all other pin voltages are referenced to VSS."
      },
      {
        "number": "8",
        "name": "OUTPUT",
        "type": "output",
        "description": "Q or Q output taken from the selected counter stage (8th, 10th, 13th, or 16th stage as chosen by A and B); capable of driving six Low-Power TTL loads, three Low-Power Schottky loads, or six HTL loads over the rated temperature range."
      },
      {
        "number": "9",
        "name": "Q/Q SELECT",
        "type": "input",
        "description": "Selects output polarity after reset: logic 0 gives output initially low after reset (Q), logic 1 gives output initially high after reset (Q̄)."
      },
      {
        "number": "10",
        "name": "MODE",
        "type": "input",
        "description": "Logic 1 sets Recycle mode, producing a continuous square wave at the oscillator frequency divided by 2^N; logic 0 sets Single-Transition mode, where the output changes state once after 2^(N-1) counts following a Master Reset."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "12",
        "name": "A",
        "type": "input",
        "description": "Time-select input A; used with input B to select the counter output stage per the Frequency Selection Table (e.g., A=0,B=0 selects N=13, count 8192)."
      },
      {
        "number": "13",
        "name": "B",
        "type": "input",
        "description": "Time-select input B; used with input A to select the counter output stage per the Frequency Selection Table (e.g., A=1,B=1 selects N=16, count 65536)."
      },
      {
        "number": "14",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage; operating range 3V (min) to 18V (typ) over the full temperature range, absolute maximum -0.5V to +20V referenced to VSS."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Discrepancy between pinout diagram (page 1) and truth table (page 2): Pinout shows PIN 9 as B (frequ; Discrepancy between pinout diagram (page 1) and functional diagram (page 2): Pinout shows PIN 11 as ; PIN 12 is not explicitly labeled in pinout diagram (shown as blank); likely corresponds to Q-bar out",
          "1/14 pin names appear NOWHERE in the datasheet text: ['12:unlabeled@p1']"
        ],
        "pages_sent": 22,
        "cost_usd": 0.3117,
        "at": "2026-09-23T12:40:59"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd4541b.pdf",
        "pages": 22,
        "sha256": "1c648629cd0ba6ed",
        "source_tier": "mfr"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "cd4541bpwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1
        ],
        "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)"
      },
      {
        "file": "cd4541bpwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "51a7ef9f32a5a61fd24de63159b6815f514552e34303a62a0e6e8c74df315cce",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-14",
      "Category": "Clock/Timing",
      "Pins": "14"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cd4541bpwr"
  ],
  "discovery_pitch": "CD4541BPWR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd4541bpwr.kicad_sym",
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    "cd4541bpwr.glb",
    "cd4541bpwr.step",
    "cd4541bpwr.lbr",
    "docs/hero.png",
    "docs/cd4541bpwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:52:12.569Z"
}