+2.7V Serial Port RS-232 Transceiver (3 Drivers / 3 Receivers) with 15kV ESD

3.3 V, ⅛ Load, ±15kV ESD Protected, RS-485/RS-422 Transceiver (Full Duplex, 16 Mbps, DE/RE)

EMI/EMC Compliant, ±15kV Protected, 230kBPS, RS-232 Transceiver with 5 Drivers & 3 Receivers
IC 6-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, MO-137AB, QSOP-16, Power Management Circuit