component
MAX3237ECDBR
Public Made by Adomby adom
Texas Instruments RS232 ICs, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "MAX3237ECDBR",
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"manufacturer": "Texas Instruments",
"package": "SSOP-28-208mil",
"pin_count": 28,
"category": "Interface",
"subcategory": "RS232 ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/max3237e",
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"lcsc": "C2864027",
"digikey": "MAX3237ECDBRTR-ND",
"mouser": "595-MAX3237ECDBR"
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"pins": [
{
"number": "1",
"name": "C2+",
"type": "passive",
"description": "Positive terminal for external 0.1µF charge pump capacitor."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Ground reference for all supplies and logic signals."
},
{
"number": "3",
"name": "C2−",
"type": "passive",
"description": "Negative terminal for external 0.1µF charge pump capacitor."
},
{
"number": "4",
"name": "V−",
"type": "power_out",
"description": "Negative supply output from charge pump, range 0 to -7V with respect to GND."
},
{
"number": "5",
"name": "DOUT1",
"type": "tri_state",
"description": "RS-232 driver output 1, ±5.4V maximum, high-impedance when SHDN=GND."
},
{
"number": "6",
"name": "DOUT2",
"type": "tri_state",
"description": "RS-232 driver output 2, ±5.4V maximum, high-impedance when SHDN=GND."
},
{
"number": "7",
"name": "DOUT3",
"type": "tri_state",
"description": "RS-232 driver output 3, ±5.4V maximum, high-impedance when SHDN=GND."
},
{
"number": "8",
"name": "RIN1",
"type": "input",
"description": "RS-232 receiver input 1, accepts -25V to +25V with 2V threshold at VCC=5V."
},
{
"number": "9",
"name": "RIN2",
"type": "input",
"description": "RS-232 receiver input 2, accepts -25V to +25V with 2V threshold at VCC=5V."
},
{
"number": "10",
"name": "DOUT4",
"type": "tri_state",
"description": "RS-232 driver output 4, ±5.4V maximum, high-impedance when SHDN=GND."
},
{
"number": "11",
"name": "RIN3",
"type": "input",
"description": "RS-232 receiver input 3, accepts -25V to +25V with 2V threshold at VCC=5V."
},
{
"number": "12",
"name": "DOUT5",
"type": "tri_state",
"description": "RS-232 driver output 5, ±5.4V maximum, high-impedance when SHDN=GND."
},
{
"number": "13",
"name": "EN",
"type": "input",
"description": "Receiver output enable control input; high disables ROUT outputs except ROUT1B."
},
{
"number": "14",
"name": "SHDN",
"type": "input",
"description": "Shutdown control input; low disables drivers and charge pump reducing supply current to less than 1mA."
},
{
"number": "15",
"name": "MBAUD",
"type": "input",
"description": "Baud rate selection input; GND selects 250kbaud, VCC selects 1Mbaud operation."
},
{
"number": "16",
"name": "ROUT1B",
"type": "output",
"description": "Receiver output 1B, TTL/CMOS logic level, always active regardless of EN and SHDN state."
},
{
"number": "17",
"name": "DIN5",
"type": "input",
"description": "TTL/CMOS driver input 5, logic levels VIH=2V minimum, VIL=0.8V maximum."
},
{
"number": "18",
"name": "ROUT3",
"type": "tri_state",
"description": "Receiver output 3, TTL/CMOS logic level VOL=0.4V, disabled when EN=VCC."
},
{
"number": "19",
"name": "DIN4",
"type": "input",
"description": "TTL/CMOS driver input 4, logic levels VIH=2V minimum, VIL=0.8V maximum."
},
{
"number": "20",
"name": "ROUT2",
"type": "tri_state",
"description": "Receiver output 2, TTL/CMOS logic level VOL=0.4V, disabled when EN=VCC."
},
{
"number": "21",
"name": "ROUT1",
"type": "tri_state",
"description": "Receiver output 1, TTL/CMOS logic level VOL=0.4V, disabled when EN=VCC."
},
{
"number": "22",
"name": "DIN3",
"type": "input",
"description": "TTL/CMOS driver input 3, logic levels VIH=2V minimum, VIL=0.8V maximum."
},
{
"number": "23",
"name": "DIN2",
"type": "input",
"description": "TTL/CMOS driver input 2, logic levels VIH=2V minimum, VIL=0.8V maximum."
},
{
"number": "24",
"name": "DIN1",
"type": "input",
"description": "TTL/CMOS driver input 1, logic levels VIH=2V minimum, VIL=0.8V maximum."
},
{
"number": "25",
"name": "C1−",
"type": "passive",
"description": "Negative terminal for external 0.1µF charge pump capacitor."
},
{
"number": "26",
"name": "VCC",
"type": "power_in",
"description": "Positive power supply input voltage, 3V to 5.5V recommended operating range."
},
{
"number": "27",
"name": "V+",
"type": "power_out",
"description": "Positive supply output from internal charge pump, 3V to 7V typical with respect to GND."
},
{
"number": "28",
"name": "C1+",
"type": "passive",
"description": "Positive terminal for external 0.1µF charge pump capacitor."
}
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"Package": "SSOP-28-208mil",
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