component
PCA9534DWR
Public Made by Adomby adom
Texas Instruments I/O Expanders, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"manufacturer": "Texas Instruments",
"package": "SOIC-16-300mil",
"pin_count": 16,
"category": "Interface",
"subcategory": "I/O Expanders",
"datasheet": "https://www.ti.com/cn/lit/gpn/pca9534",
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"digikey": "296-21763-2-ND",
"mouser": "595-PCA9534DWR"
},
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"checked_at": "2026-10-08T02:26:27Z",
"source": "Component Ocean /api/assign-pns",
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"status": "found",
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"pins": [
{
"number": "1",
"name": "A0",
"type": "input",
"description": "Address input that must be connected directly to VCC or ground; logic-high input requires at least 0.7 × VCC and logic-low input is at most 0.3 × VCC."
},
{
"number": "2",
"name": "A1",
"type": "input",
"description": "Address input that must be connected directly to VCC or ground; logic-high input requires at least 0.7 × VCC and logic-low input is at most 0.3 × VCC."
},
{
"number": "3",
"name": "A2",
"type": "input",
"description": "Address input that must be connected directly to VCC or ground; logic-high input requires at least 0.7 × VCC and logic-low input is at most 0.3 × VCC."
},
{
"number": "4",
"name": "P0",
"type": "bidirectional",
"description": "P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V."
},
{
"number": "5",
"name": "P1",
"type": "bidirectional",
"description": "P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V."
},
{
"number": "6",
"name": "P2",
"type": "bidirectional",
"description": "P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V."
},
{
"number": "7",
"name": "P3",
"type": "bidirectional",
"description": "P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "9",
"name": "P4",
"type": "bidirectional",
"description": "P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V."
},
{
"number": "10",
"name": "P5",
"type": "bidirectional",
"description": "P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V."
},
{
"number": "11",
"name": "P6",
"type": "bidirectional",
"description": "P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V."
},
{
"number": "12",
"name": "P7",
"type": "bidirectional",
"description": "P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V."
},
{
"number": "13",
"name": "INT",
"type": "output",
"description": "Open-drain, active-low interrupt output that must be connected to VCC through a pullup resistor; it asserts when any input differs from its input port register state."
},
{
"number": "14",
"name": "SCL",
"type": "input",
"description": "I2C serial clock bus that must be connected to VCC through a pullup resistor; SCL input high requires at least 0.7 × VCC."
},
{
"number": "15",
"name": "SDA",
"type": "bidirectional",
"description": "I2C serial data bus that must be connected to VCC through a pullup resistor; SDA input high requires at least 0.7 × VCC."
},
{
"number": "16",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage, operating range 2.3 V to 5.5 V."
}
],
"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: Pin numbers are taken from the DW/SOIC column of the Pin Functions table (page 5); they match the DB; INT is classed as output; the datasheet describes it as an open-drain active-low interrupt output (p; Pin descriptions for the P-port and I2C/address pins combine the pin-table text with limits from the"
],
"pages_sent": 10,
"cost_usd": 0.0686,
"at": "2026-10-08T02:26:10"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/pca9534",
"pages": 47,
"sha256": "a14499561793e160",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
"cites_pages": true,
"refuses_to_fabricate": true
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"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOIC-16-300mil",
"Category": "Interface",
"Pins": "16"
}
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"email": "[email protected]"
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