component
PCA9555PWR
Public Made by Adomby adom
Texas Instruments I/O Expanders, TSSOP-24. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
main
Ray
Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout")
84d5c72
10d ago
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{
"schema_version": 1,
"type": "component",
"slug": "pca9555pwr",
"title": "PCA9555PWR",
"brief": "Texas Instruments I/O Expanders, TSSOP-24. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
"version": "0.2.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"comm-uart",
"pca9555pwr"
],
"component": {
"mpn": "PCA9555PWR",
"manufacturer": "Texas Instruments",
"package": "TSSOP-24",
"pin_count": 24,
"category": "Comm/UART",
"subcategory": "I/O Expanders",
"datasheet": "https://www.ti.com/lit/ds/symlink/pca9555.pdf",
"parts": {
"symbol": "pca9555pwr.kicad_sym",
"footprint": "pca9555pwr.kicad_mod",
"model_3d": "pca9555pwr-etched.glb",
"model_3d_plain": "pca9555pwr.glb",
"model_3d_step": "pca9555pwr-etched.step",
"model_3d_step_plain": "pca9555pwr.step",
"lbr": "pca9555pwr.lbr"
},
"distributor_links": {},
"pins": [
{
"number": "1",
"name": "INT",
"type": "output",
"description": "Active-low, open-drain interrupt output. Asserted on any input-port state change; connect to VCC through a pull-up resistor."
},
{
"number": "2",
"name": "A1",
"type": "input",
"description": "I2C hardware address input bit 1. Tie directly to VCC or GND to set the device's I2C slave address."
},
{
"number": "3",
"name": "A2",
"type": "input",
"description": "I2C hardware address input bit 2. Tie directly to VCC or GND to set the device's I2C slave address."
},
{
"number": "4",
"name": "P00",
"type": "bidirectional",
"description": "Port 0 bit 0, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "5",
"name": "P01",
"type": "bidirectional",
"description": "Port 0 bit 1, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "6",
"name": "P02",
"type": "bidirectional",
"description": "Port 0 bit 2, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "7",
"name": "P03",
"type": "bidirectional",
"description": "Port 0 bit 3, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "8",
"name": "P04",
"type": "bidirectional",
"description": "Port 0 bit 4, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "9",
"name": "P05",
"type": "bidirectional",
"description": "Port 0 bit 5, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "10",
"name": "P06",
"type": "bidirectional",
"description": "Port 0 bit 6, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "11",
"name": "P07",
"type": "bidirectional",
"description": "Port 0 bit 7, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "12",
"name": "GND",
"type": "power_in",
"description": "Device ground return."
},
{
"number": "13",
"name": "P10",
"type": "bidirectional",
"description": "Port 1 bit 0, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "14",
"name": "P11",
"type": "bidirectional",
"description": "Port 1 bit 1, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "15",
"name": "P12",
"type": "bidirectional",
"description": "Port 1 bit 2, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "16",
"name": "P13",
"type": "bidirectional",
"description": "Port 1 bit 3, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "17",
"name": "P14",
"type": "bidirectional",
"description": "Port 1 bit 4, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "18",
"name": "P15",
"type": "bidirectional",
"description": "Port 1 bit 5, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "19",
"name": "P16",
"type": "bidirectional",
"description": "Port 1 bit 6, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "20",
"name": "P17",
"type": "bidirectional",
"description": "Port 1 bit 7, push-pull general-purpose I/O. IOL = 25 mA max sink, IOH = -10 mA max source. Defaults to input at power-on."
},
{
"number": "21",
"name": "A0",
"type": "input",
"description": "I2C hardware address input bit 0. Tie directly to VCC or GND to set the device's I2C slave address."
},
{
"number": "22",
"name": "SCL",
"type": "input",
"description": "I2C serial clock (400 kHz Fast-mode). Open-drain bus line; connect to VCC through a pull-up resistor."
},
{
"number": "23",
"name": "SDA",
"type": "bidirectional",
"description": "I2C serial data (400 kHz Fast-mode). Open-drain bus line; connect to VCC through a pull-up resistor."
},
{
"number": "24",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage, 2.3 V to 5.5 V. Decouple to GND with a local bypass capacitor."
}
],
"provenance": {
"extractor": "ds2sf",
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/pca9555.pdf",
"pages": 49,
"sha256": "9b5cc24c3c9e286a",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 24,
"described": 24,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
}
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "TSSOP-24",
"Category": "Comm/UART",
"Pins": "24"
}
},
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"pca9555pwr"
],
"discovery_pitch": "PCA9555PWR (Texas Instruments) component page with datasheet-verified CAD.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
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"pca9555pwr.kicad_mod",
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"pca9555pwr.step",
"pca9555pwr-etched.step",
"pca9555pwr.lbr",
"docs/hero.png",
"docs/pca9555pwr-datasheet.pdf",
"viewers/symbol.html",
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"visibility": {
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},
"variants": [
{
"mpn": "PCA9555PWR",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRDB",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRDBR",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRDBQ",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRDBQR",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRDGV",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRDGVR",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRDW",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRDWR",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRRGE",
"kind": "packaging"
},
{
"mpn": "PCA9555PWRRGER",
"kind": "packaging"
}
],
"updated_at": "2026-09-25T04:09:29.574Z"
}