component
SN74LVC138AQDRQ1
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "SN74LVC138AQDRQ1",
"brief": "Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"mpn": "SN74LVC138AQDRQ1",
"manufacturer": "Texas Instruments",
"package": "SOIC-16",
"pin_count": 16,
"category": "Logic",
"subcategory": "Signal Switches, Multiplexers, Decoders",
"datasheet": "https://www.ti.com/cn/lit/gpn/sn74lvc138a-q1",
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"distributor_links": {
"lcsc": "C1880243",
"digikey": "296-SN74LVC138AQDRQ1TR-ND",
"mouser": "595-SN74LVC138AQDRQ1"
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"checked_at": "2026-09-27T05:47:17Z",
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"pins": [
{
"number": "1",
"name": "A",
"type": "input",
"description": "Binary select input A (LSB); accepts input voltages from 0 V to 5.5 V with VCC operating from 2 V to 3.6 V; selects one of eight active-low outputs in combination with B and C."
},
{
"number": "2",
"name": "B",
"type": "input",
"description": "Binary select input B; accepts input voltages from 0 V to 5.5 V with VCC operating from 2 V to 3.6 V; selects one of eight active-low outputs in combination with A and C."
},
{
"number": "3",
"name": "C",
"type": "input",
"description": "Binary select input C (MSB); accepts input voltages from 0 V to 5.5 V with VCC operating from 2 V to 3.6 V; selects one of eight active-low outputs in combination with A and B."
},
{
"number": "4",
"name": "G2A",
"type": "input",
"description": "Active-low enable input; when HIGH, forces all outputs HIGH regardless of select inputs or G1 and G2B; VIH = 2 V min, VIL = 0.8 V max at VCC = 2.7 V to 3.6 V."
},
{
"number": "5",
"name": "G2B",
"type": "input",
"description": "Active-low enable input; when HIGH, forces all outputs HIGH regardless of select inputs or G1 and G2A; VIH = 2 V min, VIL = 0.8 V max at VCC = 2.7 V to 3.6 V."
},
{
"number": "6",
"name": "G1",
"type": "input",
"description": "Active-high enable input; when LOW, forces all outputs HIGH regardless of select inputs or G2A and G2B; VIH = 2 V min, VIL = 0.8 V max at VCC = 2.7 V to 3.6 V."
},
{
"number": "7",
"name": "Y7",
"type": "output",
"description": "Active-low decoded output Y7; driven LOW when G1=H, G2A=L, G2B=L, C=H, B=H, A=H; IOL max 24 mA, IOH max −24 mA at VCC = 3 V; max tpd 5.8 ns at 3.3 V."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground supply reference; continuous current through GND pin rated ±100 mA."
},
{
"number": "9",
"name": "Y6",
"type": "output",
"description": "Active-low decoded output Y6; driven LOW when G1=H, G2A=L, G2B=L, C=H, B=H, A=L; IOL max 24 mA, IOH max −24 mA at VCC = 3 V; max tpd 5.8 ns at 3.3 V."
},
{
"number": "10",
"name": "Y5",
"type": "output",
"description": "Active-low decoded output Y5; driven LOW when G1=H, G2A=L, G2B=L, C=H, B=L, A=H; IOL max 24 mA, IOH max −24 mA at VCC = 3 V; max tpd 5.8 ns at 3.3 V."
},
{
"number": "11",
"name": "Y4",
"type": "output",
"description": "Active-low decoded output Y4; driven LOW when G1=H, G2A=L, G2B=L, C=H, B=L, A=L; IOL max 24 mA, IOH max −24 mA at VCC = 3 V; max tpd 5.8 ns at 3.3 V."
},
{
"number": "12",
"name": "Y3",
"type": "output",
"description": "Active-low decoded output Y3; driven LOW when G1=H, G2A=L, G2B=L, C=L, B=H, A=H; IOL max 24 mA, IOH max −24 mA at VCC = 3 V; max tpd 5.8 ns at 3.3 V."
},
{
"number": "13",
"name": "Y2",
"type": "output",
"description": "Active-low decoded output Y2; driven LOW when G1=H, G2A=L, G2B=L, C=L, B=H, A=L; IOL max 24 mA, IOH max −24 mA at VCC = 3 V; max tpd 5.8 ns at 3.3 V."
},
{
"number": "14",
"name": "Y1",
"type": "output",
"description": "Active-low decoded output Y1; driven LOW when G1=H, G2A=L, G2B=L, C=L, B=L, A=H; IOL max 24 mA, IOH max −24 mA at VCC = 3 V; max tpd 5.8 ns at 3.3 V."
},
{
"number": "15",
"name": "Y0",
"type": "output",
"description": "Active-low decoded output Y0; driven LOW when G1=H, G2A=L, G2B=L, C=L, B=L, A=L; IOL max 24 mA, IOH max −24 mA at VCC = 3 V; max tpd 5.8 ns at 3.3 V."
},
{
"number": "16",
"name": "VCC",
"type": "power_in",
"description": "Positive supply voltage; recommended operating range 2 V to 3.6 V (data retention only at 1.5 V), absolute maximum 6.5 V; continuous current rating ±100 mA."
}
],
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"extractor": "extract_pins 0.2",
"primary_model": "claude-haiku-4-5-20251001",
"primary_mode": "text",
"consensus_model": "claude-sonnet-4-6",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
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"pages_sent": 14,
"cost_usd": 0.3334,
"at": "2026-09-27T05:46:58"
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"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/sn74lvc138a-q1",
"pages": 14,
"sha256": "475d05357e72f862",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
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"metadata": {
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"Manufacturer": "Texas Instruments",
"Package": "SOIC-16",
"Category": "Logic",
"Pins": "16"
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"email": "[email protected]"
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