DataSheet39.com

SP339B Datasheet PDF - EXAR

Part Number SP339B
Description RS-232/RS-485/RS-422 TRANSCEIVER
Manufacturers EXAR 
Logo EXAR Logo 

There is a preview and SP339B download ( pdf file ) link at the bottom of this page.



Total ( 23 pages )



Preview 1 page

No Preview Available ! SP339B datasheet, circuit

SP339B
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
NOVEMBER 2014
REV. 1.0.0
GENERAL DESCRIPTION
The SP339B is an advanced multiprotocol
transceiver supporting RS-232, RS-485, and RS-422
serial standards in a 40 pin QFN package. Integrated
cable termination and four configuration modes allow
all three protocols to be used interchangeably over a
single cable or connector with no additional switching
components. Full operation requires only four
external charge pump capacitors.
The RS-485/422 modes feature one driver and one
receiver (1TX/1RX) in both half and full duplex
configurations. The RS-232 mode (3TX/5RX)
provides full support of all eight signals commonly
used with the DB9 RS-232 connector. A dedicated
diagnostic loopback mode is also provided.
The high speed drivers operate up to 20Mbps in RS-
485/422 modes, and up to 1Mbps in RS-232 mode.
All drivers can be slew limited to 250kbps in any
mode to minimize electromagnetic interference (EMI).
All transmitter outputs and receiver inputs feature
robust electrostatic discharge (ESD) protection to
±15kV IEC-61000-4-2 Air Gap, ±8kV IEC-61000-4-2
Contact, and ±15kV Human Body Model (HBM).
Each receiver output has full fail-safe protection to
avoid system lockup, oscillation, or indeterminate
states by defaulting to logic-high output level when
the inputs are open, shorted, or terminated but
undriven. No external biasing resistors are required.
The RS-232 receiver inputs include a 5kpull-down
to ground. The RS-485/422 receiver inputs are high
impedance (>96kwhen termination is disabled),
allowing up to 256 devices on a single
communication bus (1/8th unit load).
The SP339B operates from a single power supply,
either 3.3V or 5V, with low idle current (2mA typical in
all modes). The shutdown mode consumes less than
10µA for low power standby operation.
FEATURES
Rx enabled during Tx short circuit condition
Pin selectable Cable Termination
No external resistors required for RS-485/422
termination and biasing
3.3V or 5V Single Supply Operation
Robust ESD Protection on bus pins
±15kV IEC 61000-4-2 (Air Gap)
± 8kV IEC 61000-4-2 (Contact)
±15kV Human Body Model (HBM)
Max Data Rate of 20Mbps in RS-485/422 Modes
and up to 1Mbps in RS-232 Modes
Pin selectable 250kbps Slew Limiting
3 Drivers, 5 Receivers RS-232/V.28
1 Driver, 1 Receiver RS-485/422
Full and Half Duplex Configuration
1/8th Unit Load, up to 256 receivers on bus
RS-485/422 Enhanced Failsafe for open, shorted,
or terminated but idle inputs
Space saving 6mm x 6mm QFN-40 Package
Pin compatible with SP339E and SP338E
TYPICAL APPLICATIONS
Dual Protocol Serial Ports (RS-232 or RS-485/422)
Industrial and Process Control Equipment
Point-Of-Sale Equipment
Networking Equipment
HVAC Controls Equipment
Building Security and Automation Equipment
ORDERING INFORMATION
PART NUMBER
SP339BER1-L
PACKAGE
40-pin QFN
SP339BER1-L/TR
40-pin QFN
NOTE: -L = Green / RoHS Compliant, /TR = Tape and Reel
OPERATING TEMPERATURE RANGE
-40°C to +85°C
-40°C to +85°C
DEVICE STATUS
Active
Active
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com

line_dark_gray
SP339B equivalent
SP339B
REV. 1.0.0
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
SUGGESTED DB9 CONNECTOR PINOUT
DB9
Pin
RS-232
RS-485/422
Full Duplex
RS-485
Half Duplex
1 DCD TX- Data-
2
RXD
TX+ Data+
3
TXD
RX+
4
DTR
RX-
5 Ground
6 DSR
7 RTS
8 CTS
9 RI
5


line_dark_gray

Preview 5 Page



Information Total 23 Pages
Link URL [ Copy URL to Clipboard ]
Download [ SP339B.PDF Datasheet ]


Share Link :

Electronic Components Distributor

SparkFun Electronics Allied Electronics DigiKey Electronics Arrow Electronics
Mouser Electronics Adafruit Element14 Chip One Stop


Featured Datasheets

Part NumberDescriptionManufacturers
SP339BThe function is RS-232/RS-485/RS-422 TRANSCEIVER.EXAR
EXAR
SP339EThe function is RS-232/RS-485/RS-422 TRANSCEIVER.Exar
Exar

Quick jump to:

SP33  1N4  2N2  2SA  2SC  74H  ADC  BC  BF  BU  CXA  HCF  IRF  KA  KIA  LA  LM  MC  NE  ST  STK  TDA  TL  UA 


DataSheet39.com is an Online Datasheet PDF Search Site.
It offers a large amount of data sheet, You can free PDF files download.
The updated every day, always provide the best quality and speed.



keyword : SP339B schematic, equivalent, pinout, replacement, circuit, manual

DataSheet39.com   |  2020   |  Privacy Policy |  Contact Us  | New  |  Search