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SP331

Part Number	SP331
Manufacturer	EXAR
Description	Programmable Dual RS-232/RS-485 Transceiver
Published	Nov 22, 2016
Detailed Description	SP331 Programmable Dual RS-232/RS-485 Transceiver • +5V Only Operation • Software Programmable RS-232 or RS-485 Selec...
Datasheet	SP331 PDF File

Overview

SP331 Programmable Dual RS-232/RS-485 Transceiver • +5V Only Operation • Software Programmable RS-232 or RS-485 Selection • Four RS-232 Transceivers in RS-232 Mode • Two RS-485 Full-Duplex Transceivers in RS-485 Mode • Two RS-232 Transceivers and One RS-485 Transceiver in Dual Mode • Self-Testing Loopback Mode • Full Driver Tri-State (Hi-Z) Control • Ideal for RS-232 to RS-485 conversion TI4 1 SEL_B 2 TX4 3 TX3 4 VCC 5 TX1 6 TX2 7 GND 8 C1+ 9 V+ (VDD) 10 C2+ 11 C1– 12 C2– 13 V– (VSS) 14 SP331 28 TI3 27 TI2 26 TI1 25 SEL_C 24 SEL_A 23 SEL_D 22 RX4 21 RX3 20 RX2 19 RX1 18 RI4 17 RI3 16 RI2 15 RI1 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 differential RS-485 driver/receiver.
The RS-232 transceivers ca...

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