component
74LVC257ABQ
Public Made by Adomby adom
Nexperia Signal Switches, Multiplexers, Decoders, DHVQFN-16-EP(2.5x3.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"component": {
"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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"distributor_links": {
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"checked_at": "2026-10-17T15:36:37Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"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)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"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 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"
],
"pages_sent": 14,
"cost_usd": 0.0867,
"at": "2026-10-17T15:32:33"
},
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"pages": 14,
"sha256": "3a23e9adf4d0e855",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 17,
"described": 17,
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