ST3243B ST3243C 3 to 5.5 V, 400 kbps, RS-232 trans.
STMicroelectronics
ST3243C - (ST3243B/C) transceiver
ST3243B ST3243C 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down Features ■ ■ ■ ■ ■ ■ ■ 1 µA supply current achieved when in autopower-d.