3-V to 5-V Multichannel RS-232 Line Driver/Receiver w/ +/-15-kV ESD Protection 20-SOIC -40 to 85
Texas Instruments
Texas Instruments - MAX3222EIDWRG4
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Texas Instruments - MAX3222ECDWG4
Texas Instruments - MAX3222ECDBRG4
Texas Instruments - MAX3222ECDBG4