CD4541BE

{
  "slug": "cd4541be",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Timers / Counters, DIP-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "cd4541be",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd4541be.kicad_sym",
    "cd4541be.kicad_mod",
    "cd4541be.glb",
    "cd4541be.step",
    "cd4541be.lbr",
    "docs/hero.png",
    "docs/cd4541be-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "CD4541BE",
    "manufacturer": "Texas Instruments",
    "package": "DIP-14",
    "pin_count": 14,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/cd4541b",
    "parts": {
      "symbol": "cd4541be.kicad_sym",
      "footprint": "cd4541be.kicad_mod",
      "model_3d": "cd4541be-etched.glb",
      "model_3d_plain": "cd4541be.glb",
      "model_3d_step": "cd4541be-etched.step",
      "model_3d_step_plain": "cd4541be.step",
      "lbr": "cd4541be.lbr"
    },
    "distributor_links": {
      "lcsc": "C86649"
    },
    "pins": [
      {
        "number": "1",
        "name": "RTC",
        "type": "passive",
        "description": "Timing resistor connection for RC oscillator per f=1/(2.3×RTC×CTC) with 2RTC≈CTC constraint, operating range 1kHz to 100kHz."
      },
      {
        "number": "2",
        "name": "CTC",
        "type": "passive",
        "description": "Timing capacitor connection for RC oscillator per f=1/(2.3×RTC×CTC) with 2RTC≈CTC constraint, operating range 1kHz to 100kHz."
      },
      {
        "number": "3",
        "name": "RS",
        "type": "input",
        "description": "Series resistor connection for RC oscillator (RS ≥ 10kΩ minimum) that alternatively accepts external clock input DC to 100kHz instead of internal oscillator."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "5",
        "name": "AUTO RESET",
        "type": "input",
        "description": "Automatic reset input active low; logic 0 enables auto power-on reset circuit (requires VDD > 5V for reliable operation), logic 1 disables auto reset requiring positive MASTER RESET pulse to start counting."
      },
      {
        "number": "6",
        "name": "MASTER RESET",
        "type": "input",
        "description": "Manual reset input active high; positive pulse resets 16-stage binary counter and output latch to high level; circuit is retriggerable."
      },
      {
        "number": "7",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground; negative power supply reference at 0V for all digital logic levels."
      },
      {
        "number": "8",
        "name": "OUTPUT",
        "type": "output",
        "description": "Programmable frequency divider output selecting Q from counter stage selected by A/B inputs (8/10/13/16-stage); provides continuous f=fosc/2^N square wave at MODE=1 or single-transition pulse output at MODE=0."
      },
      {
        "number": "9",
        "name": "Q/Q SELECT",
        "type": "input",
        "description": "Output polarity select input; logic 0 selects Q output initially low after reset, logic 1 selects Q̄ output initially high after reset."
      },
      {
        "number": "10",
        "name": "MODE",
        "type": "input",
        "description": "Mode select input; logic 0 enables single-transition timer mode with output pulse after 2^(N-1) clock counts, logic 1 enables recycle mode with continuous f=fosc/2^N square wave output."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "12",
        "name": "A",
        "type": "input",
        "description": "Frequency select input A; combined with B input selects counter stage for frequency division factor: (A,B)=(0,0)→13-stage/8192, (0,1)→10-stage/1024, (1,0)→8-stage/256, (1,1)→16-stage/65536."
      },
      {
        "number": "13",
        "name": "B",
        "type": "input",
        "description": "Frequency select input B; combined with A input selects counter stage for frequency divider ratio per frequency selection table."
      },
      {
        "number": "14",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply; operating voltage 3V minimum to 18V typical, with 20V absolute maximum rating per JEDEC specification."
      }
    ],
    "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": [],
        "pages_sent": 22,
        "cost_usd": 0.2442,
        "at": "2026-09-23T07:21:23"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/cd4541b",
        "pages": 22,
        "sha256": "1c648629cd0ba6ed",
        "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"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3dae072a95c64bee0d1e58be8e75383639f5017ab982de1749d05808a4eed058",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd4541be-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
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        "sha256": "29cd175e78a47202962c718b1c261c8195dc6a44dfea37f9f51546228b670018",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}