SP339E Datasheet PDF - Exar
Part Number | SP339E | |
Description | RS-232/RS-485/RS-422 TRANSCEIVER | |
Manufacturers | Exar | |
Logo | ||
There is a preview and SP339E download ( pdf file ) link at the bottom of this page. Total 23 Pages |
Preview 1 page No Preview Available ! SP339E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
DECEMBER 2013
REV. 1.0.4
GENERAL DESCRIPTION
The SP339 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 5k: pull-down
to ground. The RS-485/422 receiver inputs are high
impedance (>96k: when termination is disabled),
allowing up to 256 devices on a single communication
bus (1/8th unit load).
The SP339 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
x Pin selectable Cable Termination
x No external resistors required for RS-485/422
termination and biasing
x 3.3V or 5V Single Supply Operation
x Robust ESD Protection on bus pins
■ ±15kV IEC 61000-4-2 (Air Gap)
■ ± 8kV IEC 61000-4-2 (Contact)
■ ±15kV Human Body Model (HBM)
x Max Data Rate of 20Mbps in RS-485/422 Modes
and up to 1Mbps in RS-232 Modes
x Pin selectable 250kbps Slew Limiting
x 3 Drivers, 5 Receivers RS-232/V.28
x 1 Driver, 1 Receiver RS-485/422
■ Full and Half Duplex Configuration
■ 1/8th Unit Load, up to 256 receivers on bus
x RS-485/422 Enhanced Failsafe for open, shorted,
or terminated but idle inputs
x Space saving 6mm x 6mm QFN-40 Package
x Pin compatible with SP338E
TYPICAL APPLICATIONS
x Dual Protocol Serial Ports (RS-232 or RS-485/422)
x Industrial Computers
x Industrial and Process Control Equipment
x Point-Of-Sale Equipment
x Networking Equipment
x HVAC Controls Equipment
x Building Security and Automation Equipment
ORDERING INFORMATION
PART NUMBER
PACKAGE
SP339EER1-L
40-pin QFN
SP339EER1-L/TR
40-pin QFN
SP339ECR1-L
40-pin QFN
SP339ECR1-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
0°C to +70°C
0°C to +70°C
DEVICE STATUS
Active
Active
Active
Active
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com
|
|
SP339E
REV. 1.0.4
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
SUGGESTED DB9 CONNECTOR PINOUT
DB9
Pin
1
2
3
4
5
6
7
8
9
RS-232
DCD
RXD
TXD
DTR
DSR
RTS
CTS
RI
RS-485/422
Full Duplex
TX-
TX+
RX+
RX-
Ground
RS-485
Half Duplex
Data-
Data+
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for SP339E electronic component. |
Information | Total 23 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ SP339E.PDF Datasheet ] |
Share Link :
Electronic Components Distributor
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
Part Number | Description | MFRS |
SP339B | The function is RS-232/RS-485/RS-422 TRANSCEIVER. EXAR | |
SP339E | The function is RS-232/RS-485/RS-422 TRANSCEIVER. Exar | |
Semiconductors commonly used in industry:
1N4148 |  
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
SP33
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA |