component
74HC244DRG
Public Made by Adomby adom
HANSCHIP semiconductor Buffers, Drivers, Receivers, Transceivers, SOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"manufacturer": "HANSCHIP semiconductor",
"package": "SOP-20",
"pin_count": 20,
"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
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"type": "input",
"description": "Active-LOW output enable for outputs 1Y0 to 1Y3; a HIGH on this input forces those outputs into the high-impedance OFF-state."
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{
"number": "2",
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"type": "input",
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},
{
"number": "3",
"name": "2Y0",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of the 2OE group, high-impedance when 2OE is HIGH."
},
{
"number": "4",
"name": "1A1",
"type": "input",
"description": "Data input for the second buffer of the 1OE group, with clamp diodes that allow current-limiting resistors for interfacing to voltages above VCC."
},
{
"number": "5",
"name": "2Y1",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of the 2OE group, high-impedance when 2OE is HIGH."
},
{
"number": "6",
"name": "1A2",
"type": "input",
"description": "Data input for the third buffer of the 1OE group, with clamp diodes that allow current-limiting resistors for interfacing to voltages above VCC."
},
{
"number": "7",
"name": "2Y2",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of the 2OE group, high-impedance when 2OE is HIGH."
},
{
"number": "8",
"name": "1A3",
"type": "input",
"description": "Data input for the fourth buffer of the 1OE group, with clamp diodes that allow current-limiting resistors for interfacing to voltages above VCC."
},
{
"number": "9",
"name": "2Y3",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of the 2OE group, high-impedance when 2OE is HIGH."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground reference (0 V)."
},
{
"number": "11",
"name": "2A3",
"type": "input",
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},
{
"number": "12",
"name": "1Y3",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of the 1OE group, high-impedance when 1OE is HIGH."
},
{
"number": "13",
"name": "2A2",
"type": "input",
"description": "Data input for the third buffer of the 2OE group, with clamp diodes that allow current-limiting resistors for interfacing to voltages above VCC."
},
{
"number": "14",
"name": "1Y2",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of the 1OE group, high-impedance when 1OE is HIGH."
},
{
"number": "15",
"name": "2A1",
"type": "input",
"description": "Data input for the second buffer of the 2OE group, with clamp diodes that allow current-limiting resistors for interfacing to voltages above VCC."
},
{
"number": "16",
"name": "1Y1",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of the 1OE group, high-impedance when 1OE is HIGH."
},
{
"number": "17",
"name": "2A0",
"type": "input",
"description": "Data input for the first buffer of the 2OE group, with clamp diodes that allow current-limiting resistors for interfacing to voltages above VCC."
},
{
"number": "18",
"name": "1Y0",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of the 1OE group, high-impedance when 1OE is HIGH."
},
{
"number": "19",
"name": "2OE",
"type": "input",
"description": "Active-LOW output enable for outputs 2Y0 to 2Y3; a HIGH on this input forces those outputs into the high-impedance OFF-state."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage; 2.0 V to 6.0 V for 74HC244 and 4.5 V to 5.5 V for 74HCT244 per recommended operating conditions."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
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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 datasheet has one pin table (page 3) covering DIP-20, SOP-20 and TSSOP-20 together; no SOP-20-sp; Pin types are KiCad classes assigned from the datasheet's functional descriptions (output enables an; Text extraction dropped the overbar on the output-enable names (printed as 1OE/2OE with an active-LO",
"1/20 pin names appear NOWHERE in the datasheet text: ['19:2OE@p3']"
],
"pages_sent": 14,
"cost_usd": 0.0608,
"at": "2026-10-17T21:36:25"
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"sha256": "89ae331fa36a036e",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
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