component
74ACT240MTC
Public Made by Adomby adom
onsemi Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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],
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"component": {
"mpn": "74ACT240MTC",
"manufacturer": "onsemi",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
"datasheet": "https://www.onsemi.com/pdf/datasheet/74act240mtc-d.pdf",
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"distributor_links": {
"lcsc": "C897415",
"mouser": "512-74ACT240MTC"
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"source": "Component Ocean /api/assign-pns",
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"pn": null,
"status": "quota"
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"pn": "512-74ACT240MTC",
"status": "found"
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"pins": [
{
"number": "1",
"name": "OE1",
"type": "input",
"description": "Active-LOW 3-STATE output enable for outputs O0-O3; when HIGH, those outputs go to high impedance (Z)."
},
{
"number": "2",
"name": "I0",
"type": "input",
"description": "Buffer data input for channel 0; ACT240 inputs are TTL-compatible and the input voltage range is 0V to VCC."
},
{
"number": "3",
"name": "O4",
"type": "tri_state",
"description": "Inverting 3-STATE output of channel 4, controlled by OE2; sources/sinks 24mA."
},
{
"number": "4",
"name": "I1",
"type": "input",
"description": "Buffer data input for channel 1; ACT240 inputs are TTL-compatible and the input voltage range is 0V to VCC."
},
{
"number": "5",
"name": "O5",
"type": "tri_state",
"description": "Inverting 3-STATE output of channel 5, controlled by OE2; sources/sinks 24mA."
},
{
"number": "6",
"name": "I2",
"type": "input",
"description": "Buffer data input for channel 2; ACT240 inputs are TTL-compatible and the input voltage range is 0V to VCC."
},
{
"number": "7",
"name": "O6",
"type": "tri_state",
"description": "Inverting 3-STATE output of channel 6, controlled by OE2; sources/sinks 24mA."
},
{
"number": "8",
"name": "I3",
"type": "input",
"description": "Buffer data input for channel 3; ACT240 inputs are TTL-compatible and the input voltage range is 0V to VCC."
},
{
"number": "9",
"name": "O7",
"type": "tri_state",
"description": "Inverting 3-STATE output of channel 7, controlled by OE2; sources/sinks 24mA."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "11",
"name": "I7",
"type": "input",
"description": "Buffer data input for channel 7; ACT240 inputs are TTL-compatible and the input voltage range is 0V to VCC."
},
{
"number": "12",
"name": "O3",
"type": "tri_state",
"description": "Inverting 3-STATE output of channel 3, controlled by OE1; sources/sinks 24mA."
},
{
"number": "13",
"name": "I6",
"type": "input",
"description": "Buffer data input for channel 6; ACT240 inputs are TTL-compatible and the input voltage range is 0V to VCC."
},
{
"number": "14",
"name": "O2",
"type": "tri_state",
"description": "Inverting 3-STATE output of channel 2, controlled by OE1; sources/sinks 24mA."
},
{
"number": "15",
"name": "I5",
"type": "input",
"description": "Buffer data input for channel 5; ACT240 inputs are TTL-compatible and the input voltage range is 0V to VCC."
},
{
"number": "16",
"name": "O1",
"type": "tri_state",
"description": "Inverting 3-STATE output of channel 1, controlled by OE1; sources/sinks 24mA."
},
{
"number": "17",
"name": "I4",
"type": "input",
"description": "Buffer data input for channel 4; ACT240 inputs are TTL-compatible and the input voltage range is 0V to VCC."
},
{
"number": "18",
"name": "O0",
"type": "tri_state",
"description": "Inverting 3-STATE output of channel 0, controlled by OE1; sources/sinks 24mA."
},
{
"number": "19",
"name": "OE2",
"type": "input",
"description": "Active-LOW 3-STATE output enable for outputs O4-O7; when HIGH, those outputs go to high impedance (Z)."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage: 74ACT240 is specified at 4.5V to 5.5V (absolute maximum −0.5V to +7.0V)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"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 connection diagram on page 3 is not labelled by package; it is the single pin map for the device; The truth-table headers label OE1 as controlling pins 12, 14, 16, 18 and OE2 as controlling pins 3, ; The datasheet gives no electrical parameters of the 74ACT240MTC for input or output pin limits beyon"
],
"pages_sent": 13,
"cost_usd": 0.0777,
"at": "2026-10-21T19:16:25"
},
"datasheet": {
"url": "https://www.onsemi.com/pdf/datasheet/74act240mtc-d.pdf",
"pages": 13,
"sha256": "dca960fd9ff7c398",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
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