component
MAX3222IDWR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "MAX3222IDWR",
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"manufacturer": "Texas Instruments",
"package": "SOIC-20-300mil",
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"category": "Interface",
"subcategory": "RS232 ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/max3222",
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"lcsc": "C2869355",
"digikey": "296-13086-2-ND",
"mouser": "595-MAX3222IDWR"
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"status": "found",
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"pins": [
{
"number": "1",
"name": "EN",
"type": "input",
"description": "Receiver enable, active low: EN low turns on both ROUT outputs and EN high puts both ROUT pins into the high-impedance state."
},
{
"number": "2",
"name": "C1+",
"type": "passive",
"description": "Charge-pump capacitor pin (C1 positive terminal) for the external charge-pump capacitor."
},
{
"number": "3",
"name": "V+",
"type": "power_out",
"description": "Charge-pump positive output supply; the absolute maximum rating for V+ is −0.3 V to 7 V."
},
{
"number": "4",
"name": "C1-",
"type": "passive",
"description": "Charge-pump capacitor pin (C1 negative terminal) for the external charge-pump capacitor."
},
{
"number": "5",
"name": "C2+",
"type": "passive",
"description": "Charge-pump capacitor pin (C2 positive terminal) for the external charge-pump capacitor."
},
{
"number": "6",
"name": "C2-",
"type": "passive",
"description": "Charge-pump capacitor pin (C2 negative terminal) for the external charge-pump capacitor."
},
{
"number": "7",
"name": "V-",
"type": "power_out",
"description": "Charge-pump negative output supply; the absolute maximum rating is listed in the datasheet table as 0.3 to -7 V."
},
{
"number": "8",
"name": "DOUT2",
"type": "output",
"description": "RS-232 driver output 2; driver output voltage is limited to ±13.2 V."
},
{
"number": "9",
"name": "RIN2",
"type": "input",
"description": "RS-232 receiver 2 input; receiver input voltage range is −25 V to 25 V."
},
{
"number": "10",
"name": "ROUT2",
"type": "output",
"description": "Receiver 2 logic output; it goes high-impedance when EN is high."
},
{
"number": "11",
"name": "NC",
"type": "unconnected",
"description": "No internal connection."
},
{
"number": "12",
"name": "DIN2",
"type": "input",
"description": "Driver 2 logic input, which must be held at a valid low (≤0.8 V) or high level (≥2 V at VCC = 3.3 V, ≥2.4 V at VCC = 5 V)."
},
{
"number": "13",
"name": "DIN1",
"type": "input",
"description": "Driver 1 logic input, which must be held at a valid low (≤0.8 V) or high level (≥2 V at VCC = 3.3 V, ≥2.4 V at VCC = 5 V)."
},
{
"number": "14",
"name": "NC",
"type": "unconnected",
"description": "No internal connection."
},
{
"number": "15",
"name": "ROUT1",
"type": "output",
"description": "Receiver 1 logic output; it goes high-impedance when EN is high."
},
{
"number": "16",
"name": "RIN1",
"type": "input",
"description": "RS-232 receiver 1 input; receiver input voltage range is −25 V to 25 V."
},
{
"number": "17",
"name": "DOUT1",
"type": "output",
"description": "RS-232 driver output 1; driver output voltage is limited to ±13.2 V."
},
{
"number": "18",
"name": "GND",
"type": "power_in",
"description": "Ground reference; all voltages in the datasheet are referenced to network GND."
},
{
"number": "19",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage: 3 V to 3.6 V (3.3 V nominal) or 4.5 V to 5.5 V (5 V nominal); the device operates from 3 V to 5.5 V."
},
{
"number": "20",
"name": "PWRDOWN",
"type": "input",
"description": "Driver disable, active low: PWRDOWN low turns the drivers off (high-impedance) and reduces supply current to 1 µA typical."
}
],
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"extractor": "extract_pins 0.3",
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"primary_model": "claude-haiku-5-5",
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"guard_notes": [
"extractor flagged: Package check: the datasheet pin table (page 3) is shared by the DB (SSOP), DW (SOIC) and PW (TSSOP); Pin 11 and pin 14 are both listed in the datasheet as one NC row (\"11,14\"). They are given here as t; Pin types for C1+, C1-, C2+, C2- (passive) and V+, V- (power_out) are not given by a direction in th"
],
"pages_sent": 29,
"cost_usd": 0.0998,
"at": "2026-10-11T11:21:58"
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"url": "https://www.ti.com/cn/lit/gpn/max3222",
"pages": 29,
"sha256": "7d758e2084f5e5d4",
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"metadata": {
"specs": {
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"Package": "SOIC-20-300mil",
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