SP503CF 

SIPEX

DC=0235
Multiprotocol Transceiver

■ Single Chip Programmable Serial Transceiver
■ Seven 7 Drivers and Seven 7 Receivers
■ Software-Selectable Industry Standard Protocols:
— RS-232 V.28
— EIA-530
— RS-449
— RS-422A V.11, X.27
— RS-485
— V.35
■ Independant Driver and Receiver Mode Selection
■ 5V Single Power Supply Operation
■ Surface Mount Packaging

dokumentacja: http://www.wolumen53.com/pdf/SP503CF.pdf