Shanghai Chipanalog Microelectronics Co., Ltd. CA.
CA-IF43232E - 3V to 5.5V Two-Channel RS-232 Transceiver
Shanghai Chipanalog Microelectronics Co., Ltd. CA-IF43232E Version 1.01 CA-IF43232E 3V to 5.5V Two-Channel RS-232 Transceiver With ±15kV ESD Protect.