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SP331

Sipex
Part Number SP331
Manufacturer Sipex
Description Programmable RS-232/RS-485 Transceiver
Published Jun 7, 2005
Detailed Description ® SP331 Programmable RS-232/RS-485 Transceiver s +5V Only Operation s Software Programmable RS-232 or RS-485 Selection...
Datasheet PDF File SP331 PDF File

SP331
SP331


Overview
® 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 differential RS-485 driver/receiver.
The RS-232 transceivers can typically operate at 230kbps while adhering to the RS-232 specifications.
The RS-485 transceivers can operate up to 10Mbps while adhering to the RS-485 specifications.
The SP331 includes a self-test loopback mode where the driver outputs are internally configured to the receiver inputs.
This allows for easy diagnostic serial port testing without using an external loopback plug.
The RS-232 and RS-485 drivers can be disabled (High-Z output) by controlling a set of four select pins.
TI4 SEL_B TX4 TX3 VCC TX1 TX2 GND C1+ V+ (VDD) C2+ C1– C2– V– (VSS) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 TI3 TI2 TI1 SEL_C SEL_A SEL_D RX4 RX3 RX2 RX1 RI4 RI3 RI2 RI1 SP331 SP331DS/13 SP331 RS-232/RS-485 Serial Transceiver © Copyright 2000 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied.
Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
VCC+7V Storage Temperature.
-65˚...


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