SP338EER1-L Exar, SP338EER1-L Datasheet

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SP338EER1-L

Manufacturer Part Number
SP338EER1-L
Description
RS-422/RS-485 Interface IC Multiprotocol Transceiver
Manufacturer
Exar
Datasheet

Specifications of SP338EER1-L

Product Category
RS-422/RS-485 Interface IC
Rohs
yes
Data Rate
20 Mbps
Operating Supply Voltage
3.3 V, 5 V
Supply Current
10 mA
Operating Temperature Range
- 40 C to + 85 C
Mounting Style
SMD/SMT
Package / Case
QFN-40
Function
Transceiver
Maximum Operating Temperature
+ 85 C
Maximum Power Dissipation
500 mW
Minimum Operating Temperature
- 40 C
Number Of Drivers
2
Number Of Receivers
4
Propagation Delay Time Ns
150 ns, 100 ns
Shutdown
No

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SP338EER1-L
Manufacturer:
Zilog
Quantity:
198
Part Number:
SP338EER1-L/TR
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
NOVEMBER 2011
GENERAL DESCRIPTION
The SP338 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 up to two drivers and
four receivers (2TX/4RX) in half, full, and mixed
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 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 SP338 operates from a single power supply,
either 3.3V or 5V, with low idle current. The shutdown
mode consumes less than 10µA for low power
standby operation.
ORDERING INFORMATION
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
SP338EER1-L
SP338EER1-L/TR
SP338ECR1-L
SP338ECR1-L/TR
P
ART
up
N
UMBER
to
256
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
devices
40-pin QFN
40-pin QFN
40-pin QFN
40-pin QFN
P
on
ACKAGE
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
2 Drivers, 4 Receivers 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 SP339E
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, Half, and Mixed Duplex Configurations
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
SP338E
D
EVICE
Active
Active
Active
Active
REV. 1.0.0
S
TATUS

Related parts for SP338EER1-L

SP338EER1-L Summary of contents

Page 1

... The shutdown mode consumes less than 10µA for low power standby operation. ORDERING INFORMATION P N ART UMBER SP338EER1-L SP338EER1-L/TR SP338ECR1-L SP338ECR1-L/TR Exar Corporation 48720 Kato Road, Fremont CA, 94538 FEATURES • Pin selectable Cable Termination • ...

Page 2

SP338E 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. ...

Page 3

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.0 PIN DESCRIPTIONS BY MODE (MODE2, MODE1, MODE0) 000, 001, Pin Name Figure 1 Figure Output Output Input Input 5 L6 ...

Page 4

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION PIN DESCRIPTIONS BY MODE (MODE2, MODE1, MODE0) 000, 001, Pin Name Figure 1 Figure Input Input 23 GND Output Input 26 ...

Page 5

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.0 ELECTRICAL CHARACTERISTICS U : NLESS OTHERWISE NOTED V = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µ YMBOL ARAMETERS DC CHARACTERISTICS I Supply Current (RS-232 Supply Current ...

Page 6

SP338E 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 ...

Page 7

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.0 ELECTRICAL CHARACTERISTICS (Continued NLESS OTHERWISE NOTED V = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µ YMBOL ARAMETERS DIFFERENTIAL RECEIVER INPUTS (RS-485 / RS-422) R Receiver Input ...

Page 8

SP338E 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 ...

Page 9

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.0 TIMING CHARACTERISTICS (Continued NLESS OTHERWISE NOTED V = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µ YMBOL ARAMETERS RS-485/RS-422, DATA RATE = 250kbps (SLEW = Vcc), ONE ...

Page 10

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION BLOCK DIAGRAM BY MODE (MODE2, MODE1, MODE0 000 - L IGURE ODE OOPBACK 10 REV. 1.0.0 ...

Page 11

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0 001 - RS-232 IGURE ODE 11 SP338E ...

Page 12

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION 010 - RS-485 H IGURE ODE ALF D #1 UPLEX 12 REV. 1.0.0 ...

Page 13

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0 011 - RS-485/422 F IGURE ODE D #1 ULL UPLEX 13 SP338E ...

Page 14

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION 100 - RS-485/422 F IGURE ODE D #2 ULL UPLEX 14 REV. 1.0.0 ...

Page 15

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0 101 - RS-485/422 F IGURE ODE D #3 ULL UPLEX 15 SP338E ...

Page 16

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION 110 - RS-485 H IGURE ODE ALF D #2 UPLEX 16 REV. 1.0.0 ...

Page 17

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0 111 - RS-485/422 M IGURE ODE D IXED UPLEX 17 SP338E ...

Page 18

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION TEST FIXTURES F 9. RS-485/422 R T IGURE ECEIVER F 10. RS-485/422 D IGURE IFFERENTIAL F 11. RS-485/422 D IGURE IFFERENTIAL R ERMINATION ESISTANCE RIVER UTPUT OLTAGE RIVER ...

Page 19

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.0 F 12. RS-485/422 D O IGURE RIVER F 13. RS-232 R P IGURE ECEIVER ROPAGATION UTPUT HORT IRCUIT URRENT D ELAY 19 SP338E ...

Page 20

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION F 14. RS-232 D P IGURE RIVER ROPAGATION F 15. RS-485/422 R IGURE ECEIVER D ELAY P D ROPAGATION ELAY 20 REV. 1.0.0 ...

Page 21

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.0 F 16. RS-485/422 D P IGURE RIVER F 17. RS-485/422 R IGURE ECEIVER ROPAGATION ELAY AND ISE ALL UTPUT NABLE ISABLE IMES 21 SP338E T IMES ...

Page 22

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION F 18. RS-485/422 D O IGURE RIVER UTPUT NABLE ISABLE IMES 22 REV. 1.0.0 ...

Page 23

... These structures withstand high ESD in all states: normal operation, shutdown and powered down. ESD protection is be tested in various ways. Exar uses the following methods to qualify the protection structures designed into SP338: ±15kV using the Human Body Model (HBM) ± ...

Page 24

SP338E RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION PACKAGE DRAWINGS F 19. QFN40 IGURE 24 REV. 1.0.0 ...

Page 25

... While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness ...

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