component
SN65C3221EDBR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "SN65C3221EDBR",
"brief": "Texas Instruments RS232 ICs, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"manufacturer": "Texas Instruments",
"package": "SSOP-16-208mil",
"pin_count": 16,
"category": "Interface",
"subcategory": "RS232 ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/sn65c3221e",
"parts": {
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"footprint": "sn65c3221edbr.kicad_mod",
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"distributor_links": {
"lcsc": "C2671095",
"digikey": "296-20991-2-ND",
"mouser": "595-SN65C3221EDBR"
},
"distributor_check": {
"checked_at": "2026-10-09T03:47:46Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "296-20991-2-ND",
"status": "found"
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"pins": [
{
"number": "1",
"name": "EN",
"type": "input",
"description": "Active-low receiver enable: a low input enables the ROUT output, and a high input forces ROUT to high impedance."
},
{
"number": "2",
"name": "C1+",
"type": "passive",
"description": "Positive terminal of the voltage-doubler charge-pump capacitor C1, connected to an external 0.1 µF (3.3 V) or 0.047 µF (5 V) capacitor."
},
{
"number": "3",
"name": "V+",
"type": "power_out",
"description": "Charge-pump output of nominally 5.5 V generated from VCC, which requires the external reservoir capacitor C4."
},
{
"number": "4",
"name": "C1-",
"type": "passive",
"description": "Negative terminal of the voltage-doubler charge-pump capacitor C1."
},
{
"number": "5",
"name": "C2+",
"type": "passive",
"description": "Positive terminal of the voltage-doubler charge-pump capacitor C2."
},
{
"number": "6",
"name": "C2-",
"type": "passive",
"description": "Negative terminal of the voltage-doubler charge-pump capacitor C2."
},
{
"number": "7",
"name": "V-",
"type": "power_out",
"description": "Charge-pump output of nominally -5.5 V generated by the charge pump."
},
{
"number": "8",
"name": "RIN",
"type": "input",
"description": "RS-232 receiver input, specified for input voltages of -25 V to 25 V."
},
{
"number": "9",
"name": "ROUT",
"type": "output",
"description": "Receiver output (logic level), high impedance when EN is high."
},
{
"number": "10",
"name": "INVALID",
"type": "output",
"description": "Invalid output pin: high when a valid RS-232 level is present on any RIN input, and low when all RIN inputs are unpowered."
},
{
"number": "11",
"name": "DIN",
"type": "input",
"description": "Driver input (logic level) that controls the RS-232 driver output DOUT."
},
{
"number": "12",
"name": "FORCEON",
"type": "input",
"description": "Automatic power-down control input: low enables auto-powerdown when FORCEOFF is high, and high together with FORCEOFF high disables auto-powerdown."
},
{
"number": "13",
"name": "DOUT",
"type": "output",
"description": "RS-232 driver output, with output limits of ±13.2 V stated in the absolute maximum ratings."
},
{
"number": "14",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the device (network GND, all voltages are referenced to it)."
},
{
"number": "15",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage of 3 V to 5.5 V."
},
{
"number": "16",
"name": "FORCEOFF",
"type": "input",
"description": "Automatic power-down control input: a low input shuts down the driver and receiver and reduces supply current to 1 µA, and a high input allows normal operation."
}
],
"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 requested '208mil' package size is not stated anywhere in the datasheet text. The only package f; The pin table on page 4 lists no I/O type for C1+, C1-, C2+ and C2- (shown as '—'). These four pins ; The FORCEOFF, FORCEON and EN descriptions combine the table text with the function table and timing "
],
"pages_sent": 26,
"cost_usd": 0.0969,
"at": "2026-10-09T03:47:29"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/sn65c3221e",
"pages": 26,
"sha256": "0bd3bc3fe025cd53",
"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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"footprint_binding": "identity",
"sha256": "d0e11e46aeca5dbaa5c4bb538f3f4899761267cabdeba6486325ae9e979c03ef",
"checked": "2026-10-09",
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"sha256": "f4aa4d9b6494f5af6ce1ba37c49a68a70950e72d7f87975cde0af45299b18fea",
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},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SSOP-16-208mil",
"Category": "Interface",
"Pins": "16"
}
},
"variants": [],
"sections": [
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"discovery_triggers": [
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],
"discovery_pitch": "SN65C3221EDBR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
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