SP337EBET-0A-EB Exar Corporation, SP337EBET-0A-EB Datasheet

BOARD EVALUATION FOR SP337EBET

SP337EBET-0A-EB

Manufacturer Part Number
SP337EBET-0A-EB
Description
BOARD EVALUATION FOR SP337EBET
Manufacturer
Exar Corporation
Datasheet

Specifications of SP337EBET-0A-EB

Main Purpose
Interface, Transceiver RS-232, RS-422, RS-485
Embedded
No
Utilized Ic / Part
SP337EBET
Primary Attributes
*
Secondary Attributes
*
Operating Supply Voltage
3.3 V to 5 V
Product
Interface Modules
Silicon Core Number
SP337
Kit Contents
Board
Silicon Manufacturer
Exar
Kit Application Type
Interface
Application Sub Type
Isolated RS485/RS422 µModule Transceiver
For Use With/related Products
SP337EBET
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
1016-1371
MARCH 2011
GENERAL DESCRIPTION
The SP337E is a dual mode serial transceiver
containing both RS-232 and RS-485/422 line drivers
and receivers. The RS-232 mode provides three
drivers and five receivers to support all eight signals
commonly used in the DB9 serial port connector
(3TX/5RX). In RS-485 mode the device features two
independent high speed RS-485/422 transmit and
receive channels (2TX/2RX). The default RS-485
configuration is full-duplex, but half-duplex operation
can be obtained by tying together the TX and RI pins,
and the TXEN and RXEN signals.
The SP337E is pin compatible to Exar’s SP334.
The SP337EB features a maximum data rate of
250kbps in RS-232 mode and a maximum data rate
of 15Mbps in RS-485. However, the SP337EU
features a maximum data rate of 1Mbps in RS-232
mode and a maximum data rate of 15Mbps in RS-485
mode.
The Exar-patented high efficiency charge pumps
(5,306,954) deliver true RS-232 driver output
voltages from a single power supply from 3.3V to 5V.
Charge pump outputs are self-monitored to minimize
power consumption. The SP337E requires only four
0.1μF capacitors for complete functionality.
All RS-485 receivers or transceivers feature high
impedance inputs which allow up to 256 transceivers
on a single shared bus. When configured in RS-485
mode, each driver may be individually enabled or put
into tri-state, simplifying use on shared buses or for
bidirectional communication. The RS-485/422 drivers
can be disabled (high-Z output) by the TXEN enable
pin. The RS-232 receiver outputs can be disabled by
the RXEN enable pin.
All receivers have advanced failsafe protection to
prevent oscillation when inputs are un-connected. In
RS-232 mode, each receiver input has a 5kΩ pull-
down to ground. in RS-485 mode, receivers will
default to output logic 1 if inputs are floating, shorted,
or open but terminated.
All driver outputs and receiver inputs are protected
against ESD strikes up to +/-15,000 volts.
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER
(510) 668-7000
FEATURES
TYPICAL APPLICATIONS
3.3V to 5V Single Supply Operation
Robust +/-15kV ESD Protection
Max Data Rate of 15Mbps in RS-485 mode
and up to 1Mbps in RS-232 mode (SP337EU)
3 Drivers, 5 Receivers RS-232/V.28
2 Drivers, 2 Receivers RS-485/RS-422
RS-485 Advanced Failsafe on Open, Short or
Terminated Lines
Full Differential Driver Tri-State (Hi-Z) Control
Receiver Output Tri-State Control
WSOIC-28 or TSSOP-28 Package
Dual Protocol Serial Ports (RS-232 or RS-485)
Industrial Computers
Industrial and Process Control Equipment
Point-Of-Sales Equipment
Networking Equipment
HVAC Controls Equipment
Building Security Equipment
Human Body Model
Full-Duplex Configuration
1/8th Unit Load, up to 256 receivers on bus
FAX (510) 668-7017
www.exar.com
SP337E
REV. 1.0.2

Related parts for SP337EBET-0A-EB

SP337EBET-0A-EB Summary of contents

Page 1

TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER MARCH 2011 GENERAL DESCRIPTION The SP337E is a dual mode serial transceiver containing both RS-232 and RS-485/422 line drivers and receivers. The RS-232 mode provides three drivers and five receivers to support all eight ...

Page 2

... SP337E 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER RS-232 RS-485 A IGURE YPICAL AND ORDERING INFORMATION P N ART UMBER SP337EBCT-L SP337EBCY-L SP337EBET-L SP337EBEY-L SP337EUCT-L SP337EUCY-L SP337EUET-L SP337EUEY-L C PPLICATION IRCUITS O PERATING P ACKAGE R 28-pin WSOIC 0°C to +70°C 28-pin TSSOP 0°C to +70°C 28-pin WSOIC -40°C to +85°C 28-pin TSSOP -40° ...

Page 3

REV. 1.0.2 PIN DESCRIPTIONS Pin Assignments AME YPE 1 TI3 Input 2 TXEN Input 3 TX4 Output 4 TX3 Output 5 Vcc Power 6 TX1 Output 7 TX2 Output 8 GND Power 9 ...

Page 4

SP337E 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER Pin Assignments AME YPE 27 TI1 Input 28 TI2 Input * Pins marked with the above table are ignored or "don’t care" in ...

Page 5

REV. 1.0.2 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 to the specifications below is not implied. Exposure to absolute maximum ...

Page 6

SP337E 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER +3.3V +/-5% NLESS OTHERWISE NOTED 3.3V +25 YPICAL VALUES ARE YMBOL ARAMETERS I Receiver Output ShortCircuit Current OSS I ...

Page 7

REV. 1.0 +3.3V +/-5% NLESS OTHERWISE NOTED 3.3V +25 YPICAL VALUES ARE YMBOL ARAMETERS RS-232 (SP337EB ONLY) DATA RATE = 250kbps, ONE TRANSMITTER SWITCHING Maximum Data ...

Page 8

SP337E 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER +3.3V +/-5% NLESS OTHERWISE NOTED 3.3V +25 YPICAL VALUES ARE YMBOL ARAMETERS RS-485/RS-422 SHUTDOWN FEATURE APPLIES TO SP337EU ONLY ...

Page 9

REV. 1.0 RS-485 D O IGURE RIVER UTPUT Vcc Vcc F 5. RS-485 D P IGURE RIVER ROPAGATION F 6. RS-485 D T IGURE RIVER IMING Vcc ...

Page 10

SP337E 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER F 7. RS-485 D E IGURE RIVER NABLE AND GENERATOR F 8. RS-485 D E IGURE RIVER NABLE AND DE OUT F 9. RS-485 D E IGURE RIVER NABLE AND GENERATOR D T ...

Page 11

REV. 1.0.2 F 10. RS-485 D E IGURE RIVER NABLE AND DE OUT 11. RS-485 R P IGURE ECEIVER ROPAGATION F 12. RS-485 R P IGURE ECEIVER ROPAGATION A B OUT 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER ...

Page 12

SP337E 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER F 13. RS-485 R E IGURE ECEIVER NABLE AND S3 1.5V -1.5V GENERATOR F 14. RS-485 R E IGURE ECEIVER NABLE AND S1 is open closed 1.5V RE OUT ...

Page 13

REV. 1.0.2 F 16. RS-485 R E IGURE ECEIVER NABLE AND S1 is open closed 1.5V RE 0.25V OUT F 17. RS-485 R E IGURE ECEIVER NABLE AND S1 is closed open ...

Page 14

SP337E 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER F 19. RS-232 D O IGURE RIVER UTPUT Input OUT 20. RS-232 R P IGURE ECEIVER ROPAGATION GENERATOR F 21. RS-232 R P IGURE ECEIVER ROPAGATION 1.5V Input OUT S ...

Page 15

REV. 1.0.2 SP337E Mode Configuration tables RS232/RS485 TXEN RXEN Low Ignored Low Low Ignored High High Low Low High High High High Low High High High Low RS232/RS485 TXEN RXEN Low Ignored Low Low Ignored High High Low Low High ...

Page 16

SP337E 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER F 22 WSOIC P IGURE IN ACKAGE O D UTLINE RAWING 16 REV. 1.0.2 ...

Page 17

REV. 1.0 TSSOP P IGURE IN ACKAGE 3. RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER O D UTLINE RAWING 17 SP337E ...

Page 18

... Correct Figure 1 RS-485 driver type error. EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user’ ...

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