component
WS3243FCQ
Public Made by Adomby adom
GEC RS232 ICs, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "ws3243fcq",
"title": "WS3243FCQ",
"brief": "GEC RS232 ICs, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
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"interface",
"ws3243fcq",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "WS3243FCQ",
"manufacturer": "GEC",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Interface",
"subcategory": "RS232 ICs",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8559358471947636736",
"parts": {
"symbol": "ws3243fcq.kicad_sym",
"footprint": "ws3243fcq.kicad_mod",
"model_3d": "ws3243fcq-hero.glb",
"model_3d_plain": "ws3243fcq-etched.glb",
"model_3d_step": "ws3243fcq-etched.step",
"model_3d_step_plain": "ws3243fcq.step",
"lbr": "ws3243fcq.lbr"
},
"distributor_links": {
"lcsc": "C7302423"
},
"distributor_check": {
"checked_at": "2026-10-18T10:41:54Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "R1IN",
"type": "input",
"description": "Input of the first RS-232 receiver, accepting RS-232 level signals with an input voltage range of -18 V to +18 V and 3 kΩ to 7 kΩ input resistance."
},
{
"number": "2",
"name": "R2IN",
"type": "input",
"description": "Input of the second RS-232 receiver, accepting RS-232 level signals with an input voltage range of -18 V to +18 V and 3 kΩ to 7 kΩ input resistance."
},
{
"number": "3",
"name": "R3IN",
"type": "input",
"description": "Input of the third RS-232 receiver, accepting RS-232 level signals with an input voltage range of -18 V to +18 V and 3 kΩ to 7 kΩ input resistance."
},
{
"number": "4",
"name": "R4IN",
"type": "input",
"description": "Input of the fourth RS-232 receiver, accepting RS-232 level signals with an input voltage range of -18 V to +18 V and 3 kΩ to 7 kΩ input resistance."
},
{
"number": "5",
"name": "R5IN",
"type": "input",
"description": "Input of the fifth RS-232 receiver, accepting RS-232 level signals with an input voltage range of -18 V to +18 V and 3 kΩ to 7 kΩ input resistance."
},
{
"number": "6",
"name": "T1OUT",
"type": "output",
"description": "Output of the first RS-232 driver, delivering RS-232 level signals of about ±5 V with a short-circuit current of ±60 mA."
},
{
"number": "7",
"name": "T2OUT",
"type": "output",
"description": "Output of the second RS-232 driver, delivering RS-232 level signals of about ±5 V with a short-circuit current of ±60 mA."
},
{
"number": "8",
"name": "T3OUT",
"type": "output",
"description": "Output of the third RS-232 driver, delivering RS-232 level signals of about ±5 V with a short-circuit current of ±60 mA."
},
{
"number": "9",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "10",
"name": "T3IN",
"type": "input",
"description": "Input of the third TTL/CMOS driver, which drives output T3OUT."
},
{
"number": "11",
"name": "T2IN",
"type": "input",
"description": "Input of the second TTL/CMOS driver, which drives output T2OUT."
},
{
"number": "12",
"name": "T1IN",
"type": "input",
"description": "Input of the first TTL/CMOS driver, which drives output T1OUT."
},
{
"number": "13",
"name": "R5OUT",
"type": "output",
"description": "TTL/CMOS output of the fifth RS-232 receiver."
},
{
"number": "14",
"name": "R4OUT",
"type": "output",
"description": "TTL/CMOS output of the fourth RS-232 receiver."
},
{
"number": "15",
"name": "R3OUT",
"type": "output",
"description": "TTL/CMOS output of the third RS-232 receiver."
},
{
"number": "16",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "17",
"name": "R2OUT",
"type": "output",
"description": "TTL/CMOS output of the second RS-232 receiver."
},
{
"number": "18",
"name": "R1OUT",
"type": "output",
"description": "TTL/CMOS output of the first RS-232 receiver."
},
{
"number": "19",
"name": "R2OUTB",
"type": "output",
"description": "Non-inverting TTL output of the second RS-232 receiver; it is always enabled (TTL level output)."
},
{
"number": "20",
"name": "XIDLE",
"type": "output",
"description": "TTL/CMOS output indicating the XPWRSAVE or shutdown state."
},
{
"number": "21",
"name": "XSD",
"type": "input",
"description": "Active-low shutdown control that turns off the drivers and the voltage converter."
},
{
"number": "22",
"name": "XPWRSAVE",
"type": "input",
"description": "Driving this pin high forces the drivers enabled; SHUTDOWN must be high for this function."
},
{
"number": "23",
"name": "C1N",
"type": "passive",
"description": "Negative terminal of the boost charge-pump capacitor (C1, 0.1 µF per test conditions)."
},
{
"number": "24",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "25",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "26",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage input, specified as +3 V to +5.5 V in the pin definition (recommended operating range 3 V to 5.25 V)."
},
{
"number": "27",
"name": "VP",
"type": "power_out",
"description": "Charge-pump generated positive voltage of +5.4 V (requires C1 and C2 network)."
},
{
"number": "28",
"name": "C1P",
"type": "passive",
"description": "Positive terminal of the boost charge-pump capacitor (C1, 0.1 µF per test conditions)."
},
{
"number": "29",
"name": "C2P",
"type": "passive",
"description": "Positive terminal of the inverting charge-pump capacitor (C2, 0.1 µF per test conditions)."
},
{
"number": "30",
"name": "C2N",
"type": "passive",
"description": "Negative terminal of the inverting charge-pump capacitor (C2, 0.1 µF per test conditions)."
},
{
"number": "31",
"name": "VN",
"type": "power_out",
"description": "Charge-pump generated negative voltage of -5.4 V."
},
{
"number": "32",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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: The package hint says QFN-32-EP, but the datasheet (pin table, page 5, and package listing, page 9) ; Pin 26 VCC is listed as +3V to +5.5V in the pin definition, while the recommended operating range in; Pin 9, 16, 25 and 32 are listed as NC in the datasheet. Pin 25 is NC on the QFN32 variant and VCC is",
"exposed pad 33 added from the footprint"
],
"pages_sent": 10,
"cost_usd": 0.0675,
"at": "2026-10-18T10:40:17"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8559358471947636736",
"pages": 10,
"sha256": "2cafdfa691e32143",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ws3243fcq-etched.step",
"role": "eda",
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"metadata": {
"specs": {
"Manufacturer": "GEC",
"Package": "QFN-32-EP(5x5)",
"Category": "Interface",
"Pins": "33"
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"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"name": "Operating temperature, industrial grade",
"symbol": "",
"kind": "electrical",
"unit": "℃",
"min": -40,
"typ": 25,
"max": 85,
"conditions": "Industrial Grade",
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{
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"conditions": "VCC = +3.3V 或者 VCC = +5V",
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"source": "datasheet"
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{
"name": "Charge pump capacitor",
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{
"name": "Operating current (XPWRSAVE not enabled)",
"symbol": "",
"kind": "electrical",
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"min": null,
"typ": 0.5,
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"conditions": "XPWRSAVE=VCC; XSD=VCC; TTL Inputs = VCC/GND, RS-232 Input = float, VCC=3.3V",
"source_page": 2,
"source": "datasheet"
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"name": "Operating current with XPWRSAVE enabled",
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"source_page": 2,
"source": "datasheet"
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{
"name": "Current in SHUTDOWN mode",
"symbol": "",
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"source_page": 2,
"source": "datasheet"
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{
"name": "Driver input threshold voltage Low",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "VCC = +3.3V 或者 VCC = +5V Supply; VIN = VCC and GND, TIN",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Driver input threshold voltage High",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 2.4,
"typ": null,
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"source_page": 2,
"source": "datasheet"
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{
"name": "Driver input leakage current",
"symbol": "",
"kind": "electrical",
"unit": "uA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "",
"source_page": 2,
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{
"name": "Receiver output voltage Low",
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"kind": "electrical",
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"min": null,
"typ": null,
"max": 0.4,
"conditions": "IOUT = 1.6mA",
"source_page": 2,
"source": "datasheet"
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{
"name": "Receiver output leakage current",
"symbol": "",
"kind": "electrical",
"unit": "uA",
"min": -10,
"typ": null,
"max": 10,
"conditions": "Receiver Outputs Disabled, VOUT = VCC or GND, XSD= GND",
"source_page": 2,
"source": "datasheet"
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{
"name": "Receiver input voltage swing",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": -18,
"typ": null,
"max": 18,
"conditions": "TA = 25°C, VCC = 3.3V或者VCC = +5V Supply",
"source_page": 2,
"source": "datasheet"
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{
"name": "Receiver input threshold voltage Low",
"symbol": "",
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"source": "datasheet"
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{
"name": "Receiver input threshold voltage High",
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"min": 2.4,
"typ": null,
"max": null,
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"source": "datasheet"
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{
"name": "Receiver input resistance",
"symbol": "",
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"typ": 5,
"max": 7,
"conditions": "VIN = ±18V, TA = 25°C",
"source_page": 2,
"source": "datasheet"
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{
"name": "Driver output voltage amplitude",
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"min": -5,
"typ": null,
"max": 5,
"conditions": "RL = 3kΩ, All Outputs are loaded",
"source_page": 2,
"source": "datasheet"
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{
"name": "Driver output resistance",
"symbol": "",
"kind": "electrical",
"unit": "Ω",
"min": 300,
"typ": null,
"max": null,
"conditions": "VCC = VP = VN = GND, VOUT = ±2V",
"source_page": 2,
"source": "datasheet"
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{
"name": "Driver output short-circuit current",
"symbol": "",
"kind": "electrical",
"unit": "mA",
"min": -60,
"typ": null,
"max": 60,
"conditions": "VOUT = GND",
"source_page": 2,
"source": "datasheet"
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{
"name": "Driver output leakage current",
"symbol": "",
"kind": "electrical",
"unit": "uA",
"min": -5,
"typ": null,
"max": 5,
"conditions": "Transmitter Disabled, VOUT = ±12V",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Driver output voltage (T1OUT, T2OUT loaded)",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": -5,
"typ": null,
"max": 5,
"conditions": "T1IN=T2IN=GND; T3IN=VCC; T3OUT=3kΩ; T1OUT=T2OUT=-2.5mA",
"source_page": 3,
"source": "datasheet"
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{
"name": "Maximum data rate",
"symbol": "",
"kind": "timing",
"unit": "Kbps",
"min": 1000,
"typ": null,
"max": null,
"conditions": "RL = 3kΩ, CL = 250pF, One Transmitter Switching, TA = 25°C",
"source_page": 3,
"source": "datasheet"
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{
"name": "Transmitter slew rate limit",
"symbol": "",
"kind": "timing",
"unit": "V/uS",
"min": null,
"typ": null,
"max": 60,
"conditions": "RL = 3~7kΩ, CL= 150pF to 250pF, One Transmitter Switching, TA = 25°C, Measured from 3V to –3V or –3V to 3V",
"source_page": 3,
"source": "datasheet"
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{
"name": "ESD HBM, RS-232 inputs and outputs",
"symbol": "",
"kind": "electrical",
"unit": "KV",
"min": -15,
"typ": null,
"max": 15,
"conditions": "RS-232 Inputs and Outputs",
"source_page": 3,
"source": "datasheet"
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{
"name": "ESD EN61000-4-2 contact discharge",
"symbol": "",
"kind": "electrical",
"unit": "KV",
"min": -8,
"typ": null,
"max": 8,
"conditions": "",
"source_page": 3,
"source": "datasheet"
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{
"name": "ESD EN61000-4-2 air gap discharge",
"symbol": "",
"kind": "electrical",
"unit": "KV",
"min": -15,
"typ": null,
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"source_page": 3,
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{
"name": "Maximum working voltage",
"symbol": "VCC",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Positive charge pump voltage",
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"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Negative charge pump voltage",
"symbol": "VN",
"kind": "absolute_maximum",
"unit": "V",
"min": -7,
"typ": null,
"max": 0.3,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Driver input pins TxIN, XEN, XSD, XPWRSAVE",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Receiver input pins RxIN",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -18,
"typ": null,
"max": 18,
"conditions": "",
"source_page": 6,
"source": "datasheet"
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{
"name": "Driver output pins TxOUT",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -15,
"typ": null,
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"source_page": 6,
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{
"name": "Receiver output pins RxOUT",
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"kind": "absolute_maximum",
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"min": -0.3,
"typ": null,
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"source_page": 6,
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{
"name": "Storage temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "℃",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
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