® SP331 Programmable RS-232/RS-485 Transceiver s +5V Only Operation s Software Programmable RS-232 or RS-485 Selection s Four RS-232 Transceivers in RS-232 Mode s Two RS-485 Full-Duplex Transceivers in RS-485 Mode s Two RS-232 Transceivers and One RS-485 Transceiver in Dual Mode s Self-Testing Loopback Mode s Full Driver Tri-State (Hi-Z) Control s Ideal for RS-232 to RS-485 conversion DESCRIPTION… The SP331 is a programmable RS-232 and/or RS-485 transceiver IC.
The SP331 contains four drivers and four receivers when selected in RS-232 mode; and two drivers and two receivers when selected in RS-485 mode.
The SP331 also contains a dual mode which has two RS-232 drivers/receivers plus one di...

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