component
PCA9654EDTR2G
Public Made by Adomby adom
onsemi I/O Expanders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"slug": "pca9654edtr2g",
"title": "PCA9654EDTR2G",
"brief": "onsemi I/O Expanders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"manufacturer": "onsemi",
"package": "TSSOP-16",
"pin_count": 16,
"category": "Interface ICs",
"subcategory": "I/O Expanders",
"datasheet": "https://www.onsemi.com/pdf/datasheet/pca9654edtr2-d.pdf",
"parts": {
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"distributor_links": {
"lcsc": "C604663",
"digikey": "PCA9654EDTR2GOSTR-ND",
"mouser": "863-PCA9654EDTR2G"
},
"distributor_check": {
"checked_at": "2026-11-05T18:45:13Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "PCA9654EDTR2GOSTR-ND",
"status": "found",
"lifecycle": "Obsolete"
},
"mouser": {
"pn": "863-PCA9654EDTR2G",
"status": "found",
"lifecycle": "End of Life"
}
},
"pins": [
{
"number": "1",
"name": "AD0",
"type": "input",
"description": "Address input 0 selects one of 64 slave addresses together with AD1 and AD2; no internal pull-up resistor is incorporated on AD0."
},
{
"number": "2",
"name": "AD1",
"type": "input",
"description": "Address input 1 selects one of 64 slave addresses together with AD0 and AD2; no internal pull-up resistor is incorporated on AD1."
},
{
"number": "3",
"name": "AD2",
"type": "input",
"description": "Address input 2 selects one of 64 slave addresses together with AD0 and AD1; no internal pull-up resistor is incorporated on AD2."
},
{
"number": "4",
"name": "IO0",
"type": "bidirectional",
"description": "General-purpose I/O 0, configurable as input (high-impedance with weak 100 kΩ pull-up to VDD) or output; may be raised to a maximum of 5.5 V when configured as input, and each bit is limited to 25 mA sink."
},
{
"number": "5",
"name": "IO1",
"type": "bidirectional",
"description": "General-purpose I/O 1, configurable as input (high-impedance with weak 100 kΩ pull-up to VDD) or output; may be raised to a maximum of 5.5 V when configured as input, and each bit is limited to 25 mA sink."
},
{
"number": "6",
"name": "IO2",
"type": "bidirectional",
"description": "General-purpose I/O 2, configurable as input (high-impedance with weak 100 kΩ pull-up to VDD) or output; may be raised to a maximum of 5.5 V when configured as input, and each bit is limited to 25 mA sink."
},
{
"number": "7",
"name": "IO3",
"type": "bidirectional",
"description": "General-purpose I/O 3, configurable as input (high-impedance with weak 100 kΩ pull-up to VDD) or output; may be raised to a maximum of 5.5 V when configured as input, and each bit is limited to 25 mA sink."
},
{
"number": "8",
"name": "VSS",
"type": "power_in",
"description": "Supply ground."
},
{
"number": "9",
"name": "IO4",
"type": "bidirectional",
"description": "General-purpose I/O 4, configurable as input (high-impedance with weak 100 kΩ pull-up to VDD) or output; may be raised to a maximum of 5.5 V when configured as input, and each bit is limited to 25 mA sink."
},
{
"number": "10",
"name": "IO5",
"type": "bidirectional",
"description": "General-purpose I/O 5, configurable as input (high-impedance with weak 100 kΩ pull-up to VDD) or output; may be raised to a maximum of 5.5 V when configured as input, and each bit is limited to 25 mA sink."
},
{
"number": "11",
"name": "IO6",
"type": "bidirectional",
"description": "General-purpose I/O 6, configurable as input (high-impedance with weak 100 kΩ pull-up to VDD) or output; may be raised to a maximum of 5.5 V when configured as input, and each bit is limited to 25 mA sink."
},
{
"number": "12",
"name": "IO7",
"type": "bidirectional",
"description": "General-purpose I/O 7, configurable as input (high-impedance with weak 100 kΩ pull-up to VDD) or output; may be raised to a maximum of 5.5 V when configured as input, and each bit is limited to 25 mA sink."
},
{
"number": "13",
"name": "INT",
"type": "output",
"description": "Active-LOW open-drain interrupt output, activated when any input state differs from its corresponding input port register state; sinks 6 mA at VOL = 0.4 V."
},
{
"number": "14",
"name": "SCL",
"type": "input",
"description": "I2C-bus serial clock line, supporting Standard Mode (100 kHz), Fast Mode (400 kHz) and Fast Mode+ (1 MHz) and requiring an external pull-up to a positive supply."
},
{
"number": "15",
"name": "SDA",
"type": "bidirectional",
"description": "I2C-bus serial data line, open-drain with 30 mA SDA sink capability, requiring an external pull-up to a positive supply."
},
{
"number": "16",
"name": "VDD",
"type": "power_in",
"description": "Supply voltage, operating range 1.65 V to 5.5 V."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
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"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": [
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],
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"cost_usd": 0.101,
"at": "2026-11-05T18:44:53"
},
"datasheet": {
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"pages": 22,
"sha256": "87e488f9fe8a48bf",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 16,
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],
"package_dims": {
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"D": {
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"A": {
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"metadata": {
"specs": {
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"Package": "TSSOP-16",
"Category": "Interface ICs",
"Pins": "16"
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"rows": [
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"name": "DC Supply Voltage (recommended)",
"symbol": "VDD",
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"max": 5.5,
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"name": "Switch Input / Output Voltage",
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"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -55,
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"max": 125,
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{
"name": "Input / Output Pin Voltage",
"symbol": "VI/O",
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{
"name": "Input Current",
"symbol": "II",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
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"source_page": 4,
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{
"name": "Output Current",
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"kind": "absolute_maximum",
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"typ": null,
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"conditions": "",
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{
"name": "DC Supply Current",
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"typ": null,
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{
"name": "DC Ground Current",
"symbol": "IGND",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 200,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Total Power Dissipation",
"symbol": "PTOT",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 400,
"conditions": "",
"source_page": 4,
"source": "datasheet"
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{
"name": "Power Dissipation per Output",
"symbol": "POUT",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 100,
"conditions": "",
"source_page": 4,
"source": "datasheet"
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{
"name": "Storage Temperature Range",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"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": 4,
"source": "datasheet"
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{
"name": "Junction Temperature Under Bias",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "Under bias",
"source_page": 4,
"source": "datasheet"
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{
"name": "Power Dissipation in Still Air",
"symbol": "PD",
"kind": "thermal",
"unit": "mW",
"min": null,
"typ": null,
"max": 190,
"conditions": "Still air at 85°C",
"source_page": 4,
"source": "datasheet"
},
{
"name": "ESD Human Body Model",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "V",
"min": 4000,
"typ": null,
"max": null,
"conditions": "Human Body Model; printed > 4000 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "ESD Machine Model",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "V",
"min": 400,
"typ": null,
"max": null,
"conditions": "Machine Model; printed > 400 V",
"source_page": 4,
"source": "datasheet"
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{
"name": "Supply Current, operating",
"symbol": "IDD",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 250,
"max": 500,
"conditions": "Operating mode; no load; VI = VDD or 0 V; fSCL = 1 MHz",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Supply Current, operating",
"symbol": "IDD",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 104,
"max": 175,
"conditions": "VI = VDD or 0 V; fSCL = 100 kHz",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Standby Current",
"symbol": "ISTB",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 550,
"max": 700,
"conditions": "Standby mode; no load; VI = 0 V; fSCL = 0 Hz; I/O = inputs",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Standby Current",
"symbol": "ISTB",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.25,
"max": 1,
"conditions": "VI = VDD; fSCL = 0 Hz; I/O = inputs",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Low-Level Output Current (SCL, SDA)",
"symbol": "IOL",
"kind": "electrical",
"unit": "mA",
"min": 10,
"typ": null,
"max": null,
"conditions": "VOL = 0.4 V; VDD < 2.3 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Low-Level Output Current (SCL, SDA)",
"symbol": "IOL",
"kind": "electrical",
"unit": "mA",
"min": 20,
"typ": null,
"max": null,
"conditions": "VOL = 0.4 V; VDD ≥ 2.3 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Leakage Current (SCL, SDA)",
"symbol": "IL",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "VI = VDD or GND",
"source_page": 5,
"source": "datasheet"
},
{
"name": "High-Level Input Voltage (I/O)",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": null,
"conditions": "2.3 V ≤ VCC ≤ 5.5 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Low-Level Input Voltage (I/O)",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "2.3 V ≤ VCC ≤ 5.5 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Low-Level Output Current (I/O)",
"symbol": "IOL",
"kind": "electrical",
"unit": "mA",
"min": 8,
"typ": null,
"max": 13,
"conditions": "VOL = 0.5 V; VDD = 1.65 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Low-Level Output Current (I/O)",
"symbol": "IOL",
"kind": "electrical",
"unit": "mA",
"min": 12,
"typ": null,
"max": 22,
"conditions": "VOL = 0.5 V; VDD = 2.3 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Low-Level Output Current (I/O)",
"symbol": "IOL",
"kind": "electrical",
"unit": "mA",
"min": 17,
"typ": null,
"max": 28,
"conditions": "VOL = 0.5 V; VDD = 3.0 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Low-Level Output Current (I/O)",
"symbol": "IOL",
"kind": "electrical",
"unit": "mA",
"min": 25,
"typ": null,
"max": 37,
"conditions": "VOL = 0.5 V; VDD = 4.5 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Total Low-Level Output Current",
"symbol": "IOL(tot)",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 200,
"conditions": "VOL = 0.5 V; VDD = 4.5 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "High-Level Output Voltage",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 1.2,
"typ": null,
"max": null,
"conditions": "IOH = −3 mA; VDD = 1.65 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "High-Level Output Voltage",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 1.1,
"typ": null,
"max": null,
"conditions": "IOH = −4 mA; VDD = 1.65 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "High-Level Output Voltage",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 1.8,
"typ": null,
"max": null,
"conditions": "IOH = −8 mA; VDD = 2.3 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "High-Level Output Voltage",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 1.7,
"typ": null,
"max": null,
"conditions": "IOH = −10 mA; VDD = 2.3 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "High-Level Output Voltage",
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