SP334ET
Programmable RS-232/RS-485 Transceiver
SP34063A
1.5A Buck/Boost/Inverting DC-DC Switching Regul..
SP34063AEN
1.5A Buck/Boost/Inverting DC-DC Switching Regul..
SP34063AEN/TR
1.5A Buck/Boost/Inverting DC-DC Switching Regul..
SP3481
+3.3V Low Power Half-Duplex RS-485 Transceivers..