CD74AC157M96

{
  "slug": "cd74ac157m96",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "logic",
    "cd74ac157m96",
    "factory-2.0.0",
    "extractor-text"
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    "cd74ac157m96.step",
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    "docs/cd74ac157m96-datasheet.pdf",
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  "component": {
    "mpn": "CD74AC157M96",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd74ac157m96.pdf",
    "parts": {
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      "lbr": "cd74ac157m96.lbr"
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    "distributor_links": {
      "lcsc": "C1879883",
      "digikey": "296-CD74AC157M96TR-ND",
      "mouser": "595-CD74AC157M96"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T17:48:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-CD74AC157M96TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-CD74AC157M96",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A/B",
        "type": "input",
        "description": "Common select input: low selects the 1A, 2A, 3A and 4A sources and high selects the 1B, 2B, 3B and 4B sources, per the function table."
      },
      {
        "number": "2",
        "name": "1A",
        "type": "input",
        "description": "Channel 1 data input from source A, routed to 1Y when A/B is low and G is low; unused inputs must be held at VCC or GND."
      },
      {
        "number": "3",
        "name": "1B",
        "type": "input",
        "description": "Channel 1 data input from source B, routed to 1Y when A/B is high and G is low; unused inputs must be held at VCC or GND."
      },
      {
        "number": "4",
        "name": "1Y",
        "type": "output",
        "description": "Channel 1 true data output, forced low when strobe G is high; drive capability is ±24 mA at 4.5 V to 5.5 V."
      },
      {
        "number": "5",
        "name": "2A",
        "type": "input",
        "description": "Channel 2 data input from source A, routed to 2Y when A/B is low and G is low; unused inputs must be held at VCC or GND."
      },
      {
        "number": "6",
        "name": "2B",
        "type": "input",
        "description": "Channel 2 data input from source B, routed to 2Y when A/B is high and G is low; unused inputs must be held at VCC or GND."
      },
      {
        "number": "7",
        "name": "2Y",
        "type": "output",
        "description": "Channel 2 true data output, forced low when strobe G is high; drive capability is ±24 mA at 4.5 V to 5.5 V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference; continuous current through VCC or GND is limited to ±100 mA (absolute maximum)."
      },
      {
        "number": "9",
        "name": "3Y",
        "type": "output",
        "description": "Channel 3 true data output, forced low when strobe G is high; drive capability is ±24 mA at 4.5 V to 5.5 V."
      },
      {
        "number": "10",
        "name": "3B",
        "type": "input",
        "description": "Channel 3 data input from source B, routed to 3Y when A/B is high and G is low; unused inputs must be held at VCC or GND."
      },
      {
        "number": "11",
        "name": "3A",
        "type": "input",
        "description": "Channel 3 data input from source A, routed to 3Y when A/B is low and G is low; unused inputs must be held at VCC or GND."
      },
      {
        "number": "12",
        "name": "4Y",
        "type": "output",
        "description": "Channel 4 true data output, forced low when strobe G is high; drive capability is ±24 mA at 4.5 V to 5.5 V."
      },
      {
        "number": "13",
        "name": "4B",
        "type": "input",
        "description": "Channel 4 data input from source B, routed to 4Y when A/B is high and G is low; unused inputs must be held at VCC or GND."
      },
      {
        "number": "14",
        "name": "4A",
        "type": "input",
        "description": "Channel 4 data input from source A, routed to 4Y when A/B is low and G is low; unused inputs must be held at VCC or GND."
      },
      {
        "number": "15",
        "name": "G",
        "type": "input",
        "description": "Common active-low strobe: when high, all outputs are forced low; when low, the selected 4-bit word is routed to the outputs."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 1.5 V to 5.5 V recommended operating range (absolute maximum 6 V)."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin-number-to-name mapping for pins 9-16 comes from the TOP VIEW diagram, whose text extraction ; The datasheet gives no GND or VCC pin-specific electrical limits beyond the absolute maximum ratings"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0548,
        "at": "2026-10-21T17:45:18"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd74ac157m96.pdf",
        "pages": 15,
        "sha256": "301427dd23d14786",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}