component
MC74AC245DTR2G
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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"package": "TSSOP-20",
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"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
"datasheet": "https://www.onsemi.com/pdf/datasheet/mc74ac245dtr2-d.pdf",
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"checked_at": "2026-10-21T18:34:01Z",
"source": "Component Ocean /api/assign-pns",
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"name": "T/R",
"type": "input",
"description": "Transmit/Receive input sets the data direction: HIGH enables data from A ports to B ports (transmit), and LOW enables data from B ports to A ports (receive)."
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{
"number": "2",
"name": "A0",
"type": "bidirectional",
"description": "Side A 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "3",
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"type": "bidirectional",
"description": "Side A 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
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{
"number": "4",
"name": "A2",
"type": "bidirectional",
"description": "Side A 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
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{
"number": "5",
"name": "A3",
"type": "bidirectional",
"description": "Side A 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "6",
"name": "A4",
"type": "bidirectional",
"description": "Side A 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "7",
"name": "A5",
"type": "bidirectional",
"description": "Side A 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "8",
"name": "A6",
"type": "bidirectional",
"description": "Side A 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "9",
"name": "A7",
"type": "bidirectional",
"description": "Side A 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground reference; all DC input and output voltages are referenced to GND."
},
{
"number": "11",
"name": "B7",
"type": "bidirectional",
"description": "Side B 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "12",
"name": "B6",
"type": "bidirectional",
"description": "Side B 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "13",
"name": "B5",
"type": "bidirectional",
"description": "Side B 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "14",
"name": "B4",
"type": "bidirectional",
"description": "Side B 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "15",
"name": "B3",
"type": "bidirectional",
"description": "Side B 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "16",
"name": "B2",
"type": "bidirectional",
"description": "Side B 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "17",
"name": "B1",
"type": "bidirectional",
"description": "Side B 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "18",
"name": "B0",
"type": "bidirectional",
"description": "Side B 3-state input or 3-state output, rated for 24 mA sink/source at the A and B ports (IOL = 24 mA, IOH = −24 mA)."
},
{
"number": "19",
"name": "OE",
"type": "input",
"description": "Output Enable input; when HIGH it disables both A and B ports by placing them in a High Z condition."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage: 2.0 V to 6.0 V for ′AC devices and 4.5 V to 5.5 V for ′ACT devices, referenced to GND (absolute maximum −0.5 V to +7.0 V)."
}
],
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"primary_model": "claude-haiku-5-5",
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"at": "2026-10-21T18:28:42"
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"sha256": "a28a6cb76feeacd2",
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"Package": "TSSOP-20",
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"Pins": "20"
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"name": "Supply Voltage (′AC devices)",
"symbol": "VCC",
"kind": "recommended_operating",
"unit": "V",
"min": 2,
"typ": 5,
"max": 6,
"conditions": "′AC devices",
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{
"name": "Output Current − High",
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"min": null,
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"max": -24,
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"source_page": 2,
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"name": "Output Current − Low",
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{
"name": "Operating Ambient Temperature Range",
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"unit": "°C",
"min": -40,
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"name": "DC Input Voltage, Output Voltage (Ref. to GND)",
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"min": 0,
"typ": null,
"max": null,
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{
"name": "DC Supply Voltage (Referenced to GND)",
"symbol": "VCC",
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"min": -0.5,
"typ": null,
"max": 7,
"conditions": "Referenced to GND",
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{
"name": "DC Input Voltage (Referenced to GND)",
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"max": null,
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{
"name": "DC Output Voltage (Referenced to GND)",
"symbol": "VOUT",
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"unit": "V",
"min": -0.5,
"typ": null,
"max": null,
"conditions": "Referenced to GND; see Note 1",
"source_page": 2,
"source": "datasheet"
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{
"name": "DC Input Diode Current",
"symbol": "IIK",
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"unit": "mA",
"min": -20,
"typ": null,
"max": 20,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "DC Output Diode Current",
"symbol": "IOK",
"kind": "absolute_maximum",
"unit": "mA",
"min": -50,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "DC Output Sink/Source Current",
"symbol": "IOUT",
"kind": "absolute_maximum",
"unit": "mA",
"min": -50,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "DC Supply Current, per Output Pin",
"symbol": "ICC",
"kind": "absolute_maximum",
"unit": "mA",
"min": -50,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "DC Ground Current, per Output Pin",
"symbol": "IGND",
"kind": "absolute_maximum",
"unit": "mA",
"min": -100,
"typ": null,
"max": 100,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage Temperature Range",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Lead Temperature",
"symbol": "TL",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "1 mm from case for 10 seconds",
"source_page": 2,
"source": "datasheet"
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{
"name": "Junction Temperature Under Bias",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 140,
"conditions": "Under bias",
"source_page": 2,
"source": "datasheet"
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{
"name": "ESD Withstand Voltage, Human Body Model",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "V",
"min": 2000,
"typ": null,
"max": null,
"conditions": "EIA/JESD22-A114-A; printed as > 2000",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD Withstand Voltage, Machine Model",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "V",
"min": 200,
"typ": null,
"max": null,
"conditions": "EIA/JESD22-A115-A; printed as > 200",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD Withstand Voltage, Charged Device Model",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "V",
"min": 1000,
"typ": null,
"max": null,
"conditions": "JESD22-C101-A; printed as > 1000",
"source_page": 2,
"source": "datasheet"
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{
"name": "Latchup Performance",
"symbol": "ILatchup",
"kind": "absolute_maximum",
"unit": "mA",
"min": -100,
"typ": null,
"max": 100,
"conditions": "Above VCC and below GND at 85C",
"source_page": 2,
"source": "datasheet"
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{
"name": "Minimum High Level Input Voltage, VCC 3.0 V",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 2.1,
"typ": 1.5,
"max": null,
"conditions": "TA −40°C to +85°C column; VOUT = 0.1 V or VCC − 0.1 V",
"source_page": 3,
"source": "datasheet"
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{
"name": "Minimum High Level Input Voltage, VCC 4.5 V",
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"kind": "electrical",
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"min": 3.15,
"typ": 2.25,
"max": null,
"conditions": "TA −40°C to +85°C column; VOUT = 0.1 V or VCC − 0.1 V",
"source_page": 3,
"source": "datasheet"
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{
"name": "Minimum High Level Input Voltage, VCC 5.5 V",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 3.85,
"typ": 2.75,
"max": null,
"conditions": "TA −40°C to +85°C column; VOUT = 0.1 V or VCC − 0.1 V",
"source_page": 3,
"source": "datasheet"
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{
"name": "Maximum Low Level Input Voltage, VCC 3.0 V",
"symbol": "VIL",
"kind": "electrical",
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"min": null,
"typ": 1.5,
"max": 0.9,
"conditions": "TA −40°C to +85°C column; VOUT = 0.1 V or VCC − 0.1 V",
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"source": "datasheet"
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{
"name": "Maximum Low Level Input Voltage, VCC 4.5 V",
"symbol": "VIL",
"kind": "electrical",
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"min": null,
"typ": 2.25,
"max": 1.35,
"conditions": "TA −40°C to +85°C column; VOUT = 0.1 V or VCC − 0.1 V",
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{
"name": "Maximum Low Level Input Voltage, VCC 5.5 V",
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"typ": 2.75,
"max": 1.65,
"conditions": "TA −40°C to +85°C column; VOUT = 0.1 V or VCC − 0.1 V",
"source_page": 3,
"source": "datasheet"
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{
"name": "Minimum High Level Output Voltage, VCC 3.0 V",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 2.9,
"typ": 2.99,
"max": null,
"conditions": "IOUT = −50 µA",
"source_page": 3,
"source": "datasheet"
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{
"name": "Minimum High Level Output Voltage, VCC 4.5 V",
"symbol": "VOH",
"kind": "electrical",
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"typ": 4.49,
"max": null,
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{
"name": "Minimum High Level Output Voltage, VCC 5.5 V",
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{
"name": "Minimum High Level Output Voltage, VCC 3.0 V",
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"conditions": "VIN = VIL or VIH; IOH = −12 mA",
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{
"name": "Minimum High Level Output Voltage, VCC 4.5 V",
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{
"name": "Minimum High Level Output Voltage, VCC 5.5 V",
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"name": "Maximum Low Level Output Voltage, VCC 3.0 V",
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"name": "Maximum Low Level Output Voltage, VCC 4.5 V",
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{
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