ą SN65C3222, SN75C3222 3ĆV TO 5.5ĆV MULTICHAN.
SN75C3222E - 3-V to 5.5-V Multichannel RS-232 Line Drivers/Receivers
SN75C3222 - 3-V to 5.5-V Multichannel RS-232 Compatible Line Driver/Receiver