UM207/208/211/213 Low Power, High ESD +5V RS-232 T.
Union Semiconductor
UM207 - High ESD +5V RS-232 Transceivers
UM207/208/211/213 Low Power, High ESD +5V RS-232 Transceivers UM207EESO/UM207EEAO/UM207EEAOR/UM207EEUO UM208EESO/UM208EEAO/UM208EEAOR/UM208EEUO UM211E.