component
TRS3318EIPWR
Public Made by Adomby adom
Texas Instruments RS232 ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"description": "Texas Instruments RS232 ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"trs3318eipwr.step",
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"viewers/symbol.html",
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"component": {
"mpn": "TRS3318EIPWR",
"manufacturer": "Texas Instruments",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Interface",
"subcategory": "RS232 ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/trs3318e",
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"lbr": "trs3318eipwr.lbr"
},
"distributor_links": {
"lcsc": "C2671389",
"digikey": "296-25062-2-ND",
"mouser": "595-TRS3318EIPWR"
},
"distributor_check": {
"checked_at": "2026-10-08T16:02:43Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-25062-2-ND",
"status": "found",
"lifecycle": "Active"
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"status": "found"
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},
"pins": [
{
"number": "1",
"name": "READY",
"type": "output",
"description": "Ready-to-transmit output, active high; it is enabled high when V− goes below −3.5 V and the device is ready to transmit."
},
{
"number": "2",
"name": "C1+",
"type": "passive",
"description": "Positive terminal of the voltage-doubler charge-pump capacitor; the datasheet specifies four 0.1-µF charge-pump capacitors."
},
{
"number": "3",
"name": "V+",
"type": "power_out",
"description": "Charge-pump output at 2 × VCC generated internally; it requires an external 0.1-µF reservoir capacitor per the typical application circuit."
},
{
"number": "4",
"name": "C1−",
"type": "passive",
"description": "Negative terminal of the voltage-doubler charge-pump capacitor; the datasheet specifies four 0.1-µF charge-pump capacitors."
},
{
"number": "5",
"name": "C2+",
"type": "passive",
"description": "Positive terminal of the inverting charge-pump capacitor; the datasheet specifies four 0.1-µF charge-pump capacitors."
},
{
"number": "6",
"name": "C2−",
"type": "passive",
"description": "Negative terminal of the inverting charge-pump capacitor; the datasheet specifies four 0.1-µF charge-pump capacitors."
},
{
"number": "7",
"name": "V−",
"type": "power_out",
"description": "Charge-pump output at −2 × VCC generated internally; absolute maximum V− to GND is −7 V to 0.3 V."
},
{
"number": "8",
"name": "DOUT2",
"type": "output",
"description": "RS-232 driver output 2; absolute maximum DOUT to GND is ±13.2 V and the output is continuously short-circuit protected to GND."
},
{
"number": "9",
"name": "RIN2",
"type": "input",
"description": "RS-232 receiver input 2; the recommended receiver input voltage range is −25 V to 25 V."
},
{
"number": "10",
"name": "ROUT2",
"type": "output",
"description": "CMOS receiver output 2, referenced to VCC (absolute maximum −0.3 V to VCC + 0.3 V)."
},
{
"number": "11",
"name": "INVALID",
"type": "output",
"description": "Valid-signal detector output, active low; a logic high indicates a valid RS-232 level is present on a receiver input, and it is driven low when all receiver inputs stay between −0.3 V and 0.3 V for more than 30 µs."
},
{
"number": "12",
"name": "DIN2",
"type": "input",
"description": "CMOS driver input 2; with VCC = 2.5 V to 3 V it requires VIH of at least 0.7 × VCC and VIL of at most 0.3 × VCC, with a maximum input of 5.5 V."
},
{
"number": "13",
"name": "DIN1",
"type": "input",
"description": "CMOS driver input 1; with VCC = 2.5 V to 3 V it requires VIH of at least 0.7 × VCC and VIL of at most 0.3 × VCC, with a maximum input of 5.5 V."
},
{
"number": "14",
"name": "FORCEON",
"type": "input",
"description": "Force-on input, active high; driving it high overrides auto-powerdown and keeps the transmitters on, provided FORCEOFF is high, with absolute maximum input −0.3 V to 6 V."
},
{
"number": "15",
"name": "ROUT1",
"type": "output",
"description": "CMOS receiver output 1, referenced to VCC (absolute maximum −0.3 V to VCC + 0.3 V)."
},
{
"number": "16",
"name": "RIN1",
"type": "input",
"description": "RS-232 receiver input 1; the recommended receiver input voltage range is −25 V to 25 V."
},
{
"number": "17",
"name": "DOUT1",
"type": "output",
"description": "RS-232 driver output 1; absolute maximum DOUT to GND is ±13.2 V and the output is continuously short-circuit protected to GND."
},
{
"number": "18",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the device; VCC to GND absolute maximum is −0.3 V to 6 V."
},
{
"number": "19",
"name": "VCC",
"type": "power_in",
"description": "Single-supply input of 2.25 V to 3 V; VCC to GND absolute maximum is −0.3 V to 6 V."
},
{
"number": "20",
"name": "FORCEOFF",
"type": "input",
"description": "Force-off input, active low; driving it low powers down the transmitters and charge pump and overrides auto-powerdown and FORCEON, with absolute maximum input −0.3 V to 6 V."
}
],
"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: Pin numbers are taken from the Terminal Functions table on page 3 and cross-checked against the TSSO; Some descriptions combine the terminal-function text with absolute-maximum or recommended-operating "
],
"pages_sent": 23,
"cost_usd": 0.0954,
"at": "2026-10-08T16:02:21"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/trs3318e",
"pages": 23,
"sha256": "3758ceb856a8087f",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
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"checked": "2026-10-08",
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