74LVC257ABQ

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  "slug": "74lvc257abq",
  "title": "74LVC257ABQ",
  "brief": "Nexperia Signal Switches, Multiplexers, Decoders, DHVQFN-16-EP(2.5x3.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "mpn": "74LVC257ABQ",
    "manufacturer": "Nexperia",
    "package": "DHVQFN-16-EP(2.5x3.5)",
    "pin_count": 17,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
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        "pn": null,
        "status": "quota"
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      "mouser": {
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    },
    "pins": [
      {
        "number": "1",
        "name": "S",
        "type": "input",
        "description": "Common data select input: S LOW routes nI0 to nY and S HIGH routes nI1 to nY, with input levels specified up to 5.5 V."
      },
      {
        "number": "2",
        "name": "1I0",
        "type": "input",
        "description": "Data input from source 0 for multiplexer 1; inputs are overvoltage tolerant to 5.5 V and have Schmitt-trigger action."
      },
      {
        "number": "3",
        "name": "1I1",
        "type": "input",
        "description": "Data input from source 1 for multiplexer 1; inputs are overvoltage tolerant to 5.5 V and have Schmitt-trigger action."
      },
      {
        "number": "4",
        "name": "1Y",
        "type": "tri_state",
        "description": "3-state multiplexer output 1; high-impedance when OE is HIGH, and output voltage is specified from 0 V to VCC in HIGH or LOW state."
      },
      {
        "number": "5",
        "name": "2I0",
        "type": "input",
        "description": "Data input from source 0 for multiplexer 2; inputs are overvoltage tolerant to 5.5 V and have Schmitt-trigger action."
      },
      {
        "number": "6",
        "name": "2I1",
        "type": "input",
        "description": "Data input from source 1 for multiplexer 2; inputs are overvoltage tolerant to 5.5 V and have Schmitt-trigger action."
      },
      {
        "number": "7",
        "name": "2Y",
        "type": "tri_state",
        "description": "3-state multiplexer output 2; high-impedance when OE is HIGH, and output voltage is specified from 0 V to VCC in HIGH or LOW state."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for all voltages."
      },
      {
        "number": "9",
        "name": "3Y",
        "type": "tri_state",
        "description": "3-state multiplexer output 3; high-impedance when OE is HIGH, and output voltage is specified from 0 V to VCC in HIGH or LOW state."
      },
      {
        "number": "10",
        "name": "3I1",
        "type": "input",
        "description": "Data input from source 1 for multiplexer 3; inputs are overvoltage tolerant to 5.5 V and have Schmitt-trigger action."
      },
      {
        "number": "11",
        "name": "3I0",
        "type": "input",
        "description": "Data input from source 0 for multiplexer 3; inputs are overvoltage tolerant to 5.5 V and have Schmitt-trigger action."
      },
      {
        "number": "12",
        "name": "4Y",
        "type": "tri_state",
        "description": "3-state multiplexer output 4; high-impedance when OE is HIGH, and output voltage is specified from 0 V to VCC in HIGH or LOW state."
      },
      {
        "number": "13",
        "name": "4I1",
        "type": "input",
        "description": "Data input from source 1 for multiplexer 4; inputs are overvoltage tolerant to 5.5 V and have Schmitt-trigger action."
      },
      {
        "number": "14",
        "name": "4I0",
        "type": "input",
        "description": "Data input from source 0 for multiplexer 4; inputs are overvoltage tolerant to 5.5 V and have Schmitt-trigger action."
      },
      {
        "number": "15",
        "name": "OE",
        "type": "input",
        "description": "3-state output enable input, active LOW; a HIGH level forces all outputs into the high-impedance OFF-state."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: recommended operating range 1.65 V to 3.6 V, functional down to 1.2 V, absolute maximum 6.5 V."
      },
      {
        "number": "17",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
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        "primary_model": "claude-haiku-5-5",
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The DHVQFN16 package has an exposed thermal pad in the centre. The datasheet labels it GND(1) with t; The BQ pin numbers were taken from the 'BQ package SOT763-1 (DHVQFN16)' top-view diagram on page 3. ; The datasheet gives no per-pin electrical limits. Pin descriptions use the function text from Table ",
          "exposed pad 17 added from the footprint"
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        "at": "2026-10-17T15:32:33"
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        "described": 17,
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  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "DHVQFN-16-EP(2.5x3.5)",
      "Category": "Logic",
      "Pins": "17"
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          "name": "total power dissipation",
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          "kind": "electrical",
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          "conditions": "IO = -4 mA; VCC = 1.65 V",
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          "name": "HIGH-level output voltage",
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          "name": "HIGH-level output voltage",
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          "conditions": "IO = -12 mA; VCC = 2.7 V",
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        {
          "name": "HIGH-level output voltage",
          "symbol": "VOH",
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          "conditions": "IO = -18 mA; VCC = 3.0 V",
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          "conditions": "IO = -24 mA; VCC = 3.0 V",
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          "conditions": "IO = 100 μA; VCC = 1.65 V to 3.6 V",
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          "name": "LOW-level output voltage",
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          "conditions": "IO = 8 mA; VCC = 2.3 V",
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          "name": "LOW-level output voltage",
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          "conditions": "IO = 12 mA; VCC = 2.7 V",
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          "kind": "electrical",
          "unit": "μA",
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          "max": 20,
          "conditions": "VCC = 3.6 V; VI = 5.5 V or GND",
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          "source": "datasheet"
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          "kind": "electrical",
          "unit": "μA",
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          "conditions": "VI = VIH or VIL; VCC = 3.6 V; VO = 5.5 V or GND",
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          "source": "datasheet"
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          "kind": "electrical",
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          "conditions": "VCC = 0 V; VI or VO = 5.5 V",
          "source_page": 5,
          "source": "datasheet"
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          "kind": "electrical",
          "unit": "μA",
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          "typ": 0.1,
          "max": 40,
          "conditions": "VCC = 3.6 V; VI = VCC or GND; IO = 0 A",
          "source_page": 5,
          "source": "datasheet"
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          "kind": "electrical",
          "unit": "μA",
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          "typ": 5,
          "max": 5000,
          "conditions": "per input pin; VCC = 2.7 V to 3.6 V; VI = VCC - 0.6 V; IO = 0 A",
          "source_page": 5,
          "source": "datasheet"
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          "name": "propagation delay nI0, nI1 to nY",
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          "kind": "timing",
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          "min": 1.5,
          "typ": null,
          "max": 12.3,
          "conditions": "VCC = 1.65 V to 1.95 V; see Fig. 5",
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          "source": "datasheet"
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          "name": "propagation delay nI0, nI1 to nY",
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          "conditions": "VCC = 2.3 V to 2.7 V; see Fig. 5",
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          "source": "datasheet"
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          "name": "propagation delay nI0, nI1 to nY",
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          "name": "propagation delay nI0, nI1 to nY",
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          "conditions": "VCC = 3.0 V to 3.6 V; see Fig. 5",
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          "source": "datasheet"
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          "source": "datasheet"
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