SP339E EXAR [Exar Corporation], SP339E Datasheet

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SP339E

Manufacturer Part Number
SP339E
Description
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
Manufacturer
EXAR [Exar Corporation]
Datasheet

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SP339ECR1-L
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SP339EER1-L
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Part Number:
SP339EER1-L/TR
0
OCT 2011
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.
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 Human Body Model (HBM) and ±8kV IEC-
61000-4-2 Contact. 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 5kΩ pull-down
to ground. The RS-485/422 receiver inputs are high
impedance (>96kΩ when termination is disabled),
allowing
communication bus (1/8th unit load).
The SP339E 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.
ORDERING INFORMATION
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
SP339EER1-L
SP339EER1-L/TR
SP339ECR1-L
SP339ECR1-L/TR
P
ART
up
N
UMBER
to
The
256
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
RS-232
devices
mode
40-pin QFN
40-pin QFN
40-pin QFN
40-pin QFN
P
on
ACKAGE
(3TX/5RX)
a
single
(510) 668-7000
FEATURES
TYPICAL APPLICATIONS
O
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
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
RS-485/422 Enhanced Failsafe for open, shorted,
or terminated but idle inputs
Space saving 6mm x 6mm QFN-40 Package
Pin compatible with SP338E
Dual Protocol Serial Ports (RS-232 or RS-485/422)
Industrial Computers
Industrial and Process Control Equipment
Point-Of-Sale Equipment
Networking Equipment
HVAC Controls Equipment
Building Security and Automation Equipment
PERATING
±15kV Human Body Model (HBM)
±8kV IEC 61000-4-2 (Contact)
Full and Half Duplex Configuration
1/8th Unit Load, up to 256 receivers on bus
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
T
FAX (510) 668-7017
EMPERATURE
R
ANGE
www.exar.com
SP339E
D
EVICE
Active
Active
Active
Active
REV. 1.0.0
S
TATUS

Related parts for SP339E

SP339E Summary of contents

Page 1

... The SP339E 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. ORDERING INFORMATION P N ...

Page 2

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION 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 rating conditions for extended periods of time may affect reliability and cause permanent damage to the device ...

Page 3

... This pin is not used and is disconnected internally This pin is not used and is disconnected internally This pin is not used and is disconnected internally ENABLE = V for operation, ENABLE = 0V for shutdown SP339E 10, Figure 3 11, Figure Output R1 Output T1 Input T1 Input 1 1 ...

Page 4

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION PIN DESCRIPTIONS BY MODE (MODE1, MODE0) Pin Name 00 GND GND GND VCC 33 VSS 34 C2- 35 C1- 36 GND 37 C1+ 38 VCC 39 C2+ 40 VDD Figure 1 01, Figure 2 R5 Input ...

Page 5

... V 2.4 V 0.8 V µA 1 µA 1 µA 50 200 -0.6 CC 0.4 V ±20 ±60 mA µA ±0.1 ±1 5 SP339E = 3.3V +25° ONDITIONS No load, idle inputs No load, idle inputs ENABLE = 3. 5.0V CC Input Low (V = 0V) IN Input High ( pins 3, 4 and 6 Input High ( ...

Page 6

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION ELECTRICAL CHARACTERISTICS (Continued NLESS OTHERWISE NOTED V = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µ YMBOL ARAMETERS SINGLE-ENDED RECEIVER INPUTS (RS-232) V Input Voltage Range IN V Input Threshold Low IL V Input Threshold High IH V Input Hysteresis HYS R Input Resistance ...

Page 7

... -0.2 +0 0.2 V ±250 mA µA ±100 7 SP339E = 3.3V +25° ONDITIONS TERM = 0V, -7V ≤ V ≤ +12V +12V -7V IN TERM = V , Figure 5 CC -7V ≤ V ≤ +12V CM TERM = V , Figure ...

Page 8

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION TIMING CHARACTERISTICS U : NLESS OTHERWISE NOTED V = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µ YMBOL ARAMETERS ALL MODES t Enable from Shutdown ENABLE t Enable to Shutdown SHUTDOWN RS-232, DATA RATE = 250kbps (SLEW = Vcc), ONE TRANSMITTER SWITCHING Maximum Data Rate ...

Page 9

... Mbps 150 100 200 ns 200 ns 200 ns 200 ns 9 SP339E = 3.3V +25° ONDITIONS Ω 50pF 15pF, Figure 54Ω 50pF Figure 12 Figure 13 Figure 14 = 54Ω 50pF 15pF, ...

Page 10

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION BLOCK DIAGRAM BY MODE (MODE1, MODE0 IGURE ODE OOPBACK 10 REV. 1.0.0 ...

Page 11

... RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0 RS-232 IGURE ODE 11 SP339E ...

Page 12

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION RS-485 H IGURE ODE ALF D UPLEX 12 REV. 1.0.0 ...

Page 13

... RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0 RS-485/422 F IGURE ODE D ULL UPLEX 13 SP339E ...

Page 14

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION TEST FIXTURES F 5. RS-485/422 R T IGURE ECEIVER F 6. RS-485/422 D IGURE IFFERENTIAL F 7. RS-485/422 D IGURE IFFERENTIAL R ERMINATION ESISTANCE RIVER UTPUT OLTAGE RIVER UTPUT OLTAGE OVER 14 REV. 1.0.0 M OMMON ODE ...

Page 15

... RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0 RS-485/422 D O IGURE RIVER UTPUT F 9. RS-232 R P IGURE ECEIVER ROPAGATION HORT IRCUIT URRENT D ELAY 15 SP339E ...

Page 16

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION F 10. RS-232 D P IGURE RIVER ROPAGATION F 11. RS-485/422 R IGURE ECEIVER D ELAY P D ROPAGATION ELAY 16 REV. 1.0.0 ...

Page 17

... RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.0 F 12. RS-485/422 D P IGURE RIVER F 13. RS-485/422 R IGURE ECEIVER ROPAGATION ELAY AND ISE ALL UTPUT NABLE ISABLE IMES 17 SP339E T IMES ...

Page 18

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION F 14. RS-485/422 D O IGURE RIVER UTPUT NABLE ISABLE IMES 18 REV. 1.0.0 ...

Page 19

... HBM. The SP339E has passed both HBM and IEC 61000-4-2 testing without damage. ±20V FAULT TOLERANCE All bus pins on the SP339E are protected against direct shorts or long term faults ±20V. This allows the part to interoperate with legacy systems using ±15V RS-232 logic levels without damage or failure. ...

Page 20

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION PACKAGE DRAWINGS F 15. QFN40 IGURE 20 REV. 1.0.0 ...

Page 21

... SP339E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REVISION HISTORY D R ATE EVISION October 2011 1.0.0 Production Release 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 ...

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