(multiple brand) 75185 / 75232 (RS-232 Driver/Receiver)
Alias: ASP AP232, BCDSEMI / Advanced Analog Circuits AZ75232, National Semiconductor DS14185, Texas Instruments GD75232, LG GD75232, Hynix GD75232, Holtek / Regional HT6571, ALi M5232, Texas Instruments SN75185, ST / Inmos ST75185C, Winbond W83778S