component
74HC244PWRG
Public Made by Adomby adom
HANSCHIP semiconductor Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"package": "TSSOP-20",
"pin_count": 20,
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"pins": [
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"number": "1",
"name": "1OE",
"type": "input",
"description": "Output enable input (active LOW); a HIGH level on 1OE forces outputs 1Y0 to 1Y3 into the high-impedance OFF-state."
},
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"number": "2",
"name": "1A0",
"type": "input",
"description": "Data input for buffer channel 1A0; inputs have clamp diodes that allow current-limiting resistors for interfacing to voltages above VCC."
},
{
"number": "3",
"name": "2Y0",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of buffer channel 2Y0, high-impedance when 2OE is HIGH."
},
{
"number": "4",
"name": "1A1",
"type": "input",
"description": "Data input for buffer channel 1A1; inputs have 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 buffer channel 2Y1, high-impedance when 2OE is HIGH."
},
{
"number": "6",
"name": "1A2",
"type": "input",
"description": "Data input for buffer channel 1A2; inputs have 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 buffer channel 2Y2, high-impedance when 2OE is HIGH."
},
{
"number": "8",
"name": "1A3",
"type": "input",
"description": "Data input for buffer channel 1A3; inputs have 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 buffer channel 2Y3, high-impedance when 2OE is HIGH."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground reference (0 V) for the device."
},
{
"number": "11",
"name": "2A3",
"type": "input",
"description": "Data input for buffer channel 2A3; inputs have clamp diodes that allow current-limiting resistors for interfacing to voltages above VCC."
},
{
"number": "12",
"name": "1Y3",
"type": "tri_state",
"description": "Non-inverting 3-state bus output of buffer channel 1Y3, high-impedance when 1OE is HIGH."
},
{
"number": "13",
"name": "2A2",
"type": "input",
"description": "Data input for buffer channel 2A2; inputs have 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 buffer channel 1Y2, high-impedance when 1OE is HIGH."
},
{
"number": "15",
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"type": "input",
"description": "Data input for buffer channel 2A1; inputs have 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 buffer channel 1Y1, high-impedance when 1OE is HIGH."
},
{
"number": "17",
"name": "2A0",
"type": "input",
"description": "Data input for buffer channel 2A0; inputs have 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 buffer channel 1Y0, high-impedance when 1OE is HIGH."
},
{
"number": "19",
"name": "2OE",
"type": "input",
"description": "Output enable input (active LOW); a HIGH level on 2OE forces outputs 2Y0 to 2Y3 into the high-impedance OFF-state."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage; the 74HC244 is specified for 2.0 V to 6.0 V and the 74HCT244 for 4.5 V to 5.5 V."
}
],
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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 overbar on the OE pin names (1OE, 2OE) was lost in text extraction; names are shown without the ; Output type set to tri_state because the datasheet describes 3-state outputs; the pin table only say; The VCC description merges the supply ranges from the Recommended Operating Conditions table (page 4",
"1/20 pin names appear NOWHERE in the datasheet text: ['19:2OE@p3']"
],
"pages_sent": 14,
"cost_usd": 0.0646,
"at": "2026-10-18T09:02:14"
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