component
ISOW7741FQDFMRQ1
Public Made by Adomby adom
Texas Instruments Digital Isolators, SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"mpn": "ISOW7741FQDFMRQ1",
"manufacturer": "Texas Instruments",
"package": "SOIC-20",
"pin_count": 20,
"category": "Communication Interface Chip/UART/485/232",
"subcategory": "Digital Isolators",
"datasheet": "https://www.ti.com/lit/ds/symlink/isow7741-q1.pdf",
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"digikey": "296-ISOW7741FQDFMRQ1TR-ND",
"mouser": "595-ISOW7741FQDFMRQ1"
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"pins": [
{
"number": "1",
"name": "VIO",
"type": "power_in",
"description": "Side 1 logic supply (1.71V to 5.5V)."
},
{
"number": "2",
"name": "INA",
"type": "input",
"description": "Input channel A."
},
{
"number": "3",
"name": "INB",
"type": "input",
"description": "Input channel B."
},
{
"number": "4",
"name": "INC",
"type": "input",
"description": "Input channel C."
},
{
"number": "5",
"name": "OUTD",
"type": "output",
"description": "Output channel D."
},
{
"number": "6",
"name": "GNDIO",
"type": "power_in",
"description": "Ground connection for VIO; GND1 and GNDIO need to be shorted on board."
},
{
"number": "7",
"name": "EN_IO1",
"type": "input",
"description": "Output Enable 1: high or open enables side 1 channel outputs; low puts side 1 outputs in high impedance and disables side 1 input transmitters."
},
{
"number": "8",
"name": "EN/FLT",
"type": "bidirectional",
"description": "Multi-function pin used either as DC-DC converter enable input (high to VIO level enables, low at GND1 level disables) or as active-low fault output (needs 5kΩ or greater pull-up)."
},
{
"number": "9",
"name": "VDD",
"type": "power_in",
"description": "Side 1 DC-DC converter power supply (3V to 5.5V)."
},
{
"number": "10",
"name": "GND1",
"type": "power_in",
"description": "Ground connection for VDD; GND1 and GNDIO need to be shorted on board."
},
{
"number": "11",
"name": "GND2",
"type": "power_in",
"description": "Ground connection for VISOOUT; GND2 and GISOIN can be shorted on board or connected through a ferrite bead."
},
{
"number": "12",
"name": "VISOOUT",
"type": "power_out",
"description": "Isolated power converter output voltage; VISOIN and VISOOUT can be shorted on board or connected through a ferrite bead."
},
{
"number": "13",
"name": "VSEL",
"type": "input",
"description": "VISOOUT selection: 5V when shorted to VISOOUT, 3.3V when shorted to GND2."
},
{
"number": "14",
"name": "EN_IO2",
"type": "input",
"description": "Output Enable 2: high or open enables side 2 channel outputs; low puts side 2 outputs in high impedance and disables side 2 input transmitters."
},
{
"number": "15",
"name": "GISOIN",
"type": "power_in",
"description": "Ground connection for VISOIN; GND2 and GISOIN can be shorted on board or connected through a ferrite bead."
},
{
"number": "16",
"name": "IND",
"type": "input",
"description": "Input channel D."
},
{
"number": "17",
"name": "OUTC",
"type": "output",
"description": "Output channel C."
},
{
"number": "18",
"name": "OUTB",
"type": "output",
"description": "Output channel B."
},
{
"number": "19",
"name": "OUTA",
"type": "output",
"description": "Output channel A."
},
{
"number": "20",
"name": "VISOIN",
"type": "power_in",
"description": "Side 2 supply voltage for isolation channels; VISOIN and VISOOUT can be shorted on board or connected through a ferrite bead."
}
],
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"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: MPN is the ISOW7741 (not ISOW7742) variant, so pin 4 = INC and pin 17 = OUTC per the ISOW7741-Q1 col; Pin types are inferred from the datasheet's I/O/I/O and dash entries. Supply and ground types (power"
],
"pages_sent": 8,
"cost_usd": 0.0988,
"at": "2026-10-30T11:57:49"
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"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/isow7741-q1.pdf",
"pages": 59,
"sha256": "5406e11d61ba200a",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
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"package_dims": {
"package_code": "DFM0020A",
"source_page": 49,
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12.93
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"E1": {
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"Package": "SOIC-20",
"Category": "Communication Interface Chip/UART/485/232",
"Pins": "20"
},
"appearance": {
"contacts": {
"quote": "pins. Verify that enough copper is present on both GND pins to prevent the internal junction temperature of the",
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"material": "copper"
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"email": "[email protected]"
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