ST3232B, ST3232C 3 to 5.5 V, low-power, up to 400.
STMicroelectronics
ST3232C - RS-232 drivers and receivers
ST3232B, ST3232C 3 to 5.5 V, low-power, up to 400 kbs RS-232 drivers and receivers Datasheet - production data Features 300 µA supply current 300 kb.
