interface brochure UARTs transceivers

interface brochure
UARTs
transceivers
Interface :: UARTs
s the market leader in providing Universal Asynchronous Receiver
and Transmitter (UART) solutions, Exar Corporation offers the
broadest line of patented industry-proven product families. Exar’s
product line ranges from cost-effective industry-standard devices to
high-performance multi-channel UARTs with a broad range of FIFO
depths. Exar’s stand-alone, off-the-shelf UART solutions reduce
development time and provide an immediate competitive advantage
in time-to-market and performance capabilities.
A
Traditional 8-bit UARTs provide parallel-to-serial or serial-to-parallel
data conversion over industry standard asynchronous communication
data interfaces such as RS-232, RS-422 and RS-485. In addition
to the 8-bit UART family, Exar also offers a PCI UART family and an
I²C/SPI UART family. Exar UARTs are found in consumer, industrial,
telecommunication, and many other applications.
Features and Capabilities
Low Voltage Operation
Exar offers low voltage UART product families that are capable of
operating down to 1.62V. The lower operating power supply range is
well suited for battery operated systems and handheld devices.
Industry Lowest Power Consumption
Exar’s enhanced UARTs are low power devices. In addition, the devices
feature sleep and Power Save modes for further power saving as low as
5 uA in sleep mode and 500uA in active mode.
Fastest Data Rates
At 16Mbps, Exar offers the industry’s fastest UARTs. In addition, slower
and lower cost crystals and oscillators can be used to generate higher
data rates with Exar’s 8X and 4X sampling rate features.
Fractional Baud Rate Generator
Exar’s Fractional Baud Rate Generator feature allows more flexibility
for the designer in selecting a crystal or oscillator since it can take any
clock source to generate the standard legacy baud rates or any custom
baud rates.
Automatic Flow Control
Exar’s enhanced UARTs offer auto RTS/CTS hardware and software
flow control that prevent data loss and the need for re-transmission.
Auto RS-485 Half-Duplex Direction Control with Programmable
Turn-Around Delay
Exar is the first to introduce this unique feature that supports 2-wire
EIA-485 half-duplex communication, it eliminates complicated software
coding.
Pin-to-Pin Migration Path
Exar offers a migration path from legacy UART devices to enhanced high
performance devices by maintaining pin-to-pin compatibility whenever
possible. This minimizes hardware and software changes and reduces
time-to-market.
Small Packages
Exar UARTs are currently offered in packages that are as small as
4mm x 4mm for space constrained applications without sacrificing any
functionality and performance.
I²C and SPI Bus
Exar also offers UARTs with 2-wire (I²C) and 4-wire (SPI) interfaces to
easily add additional functionality and value to any embedded system
design.
UARTs with Integrated Transceivers
Exar offers UART with integrated RS-232 or RS-485 transceiver combos
in a single small footprint QFN package ideal for simplifying designs and
using less board space.
PCI Bus
In addition to the 8-bit Intel or Motorola data bus UARTs, Exar offers
UART product families with 33MHz and 66MHz PCI bus interfaces.
FIFO
Exar offers devices with 1 to 128-Bytes of FIFOs with programmable
trigger levels and FIFO level counters. Larger FIFO sizes allow
increased data throughput by loading and unloading more data per
transaction. Larger FIFOs improve the performace reducing the number
of interrupts.
Wireless UART
Exar’s 900MHz Wireless UART chipset consists of a Wireless UART
controller and 900MHz RF Transceiver. The Wireless UART controller
has an 8051 embedded MCU, 32KB system memory, 128-bit AES
engine and Exar’s proprietary firmware. The RF Transceiver has
extensive hardware support such as RSSI, ED, LQI and CRC detection,
for insuring data integrity in a noisy environment. Together, the Wireless
UART chipset eliminates the serial cable.
UART and Tranceiver Combination Overview
2
2-Channel UART Package Migration Chart S/W and Pin Compatible Upgrade
1-Channel UART Package Migration Chart S/W and Pin Compatible Upgrade
3
4-Channel and 8-Channel UART Package Migration Chart S/W and Pin Compatible Upgrade
PCI UART Package Migration Chart S/W and Pin Compatible Upgrade
4
5
6
Interface :: Transceivers :: RS-232
Key Features and Capabilities
Robust Electrostatic Discharge (ESD) Protection
Highly Efficient Charge Pump
The charge pump is used to generate positive and negative signal
voltages for the RS-232 drivers. This enables fully compliant RS232 and V.28 signals from a single 3.0 or 5.5V power supply. The
charge pumps use four external capacitors to hold and transfer
electrical charge. The patented designuses a unique approach
compared to older less efficient designs. The pumps use a fourphase voltage shifting technique to attain symmetrical V+ and
V- power supplies. An intelligent control oscillator regulates the
±15kV using the Human Body Model
±8kV using the Contact Discharge method specified in operation of the charge-pump to maintain the proper voltages at
maximum efficiency.
IEC 61000-4-2
Exar uses state of the art structures to protect the transceiver
pins against ESD of ±15kV without damage. The ESD structures
withstand high ESD in all states: normal operation, shutdown
and powered down. After an ESD event, the transceivers keep
working without latch-up or damage. ESD protection can be
tested in various ways. The transmitter outputs and receiver
inputs are characterized for protection to the following limits:
•
•
•
±15kV using the Air-Gap Discharge method specified in
IEC 61000-4-2
Better Noise Immunity
Since receiver input is usually from a transmission line where long
cable lengths and system interference can degrade the signal,
The RS-232 transceivers have the advanced Auto On-line Plus the inputs have a hysteresis margin of 500mV. This ensures that
feature that saves power by turning off the charge pumps and the receiver is virtually immune to noisy transmission lines.
driver outputs when the transceiver inputs are idle for more than
30 seconds.
Auto On-line® Plus Circuitry
RS-232 Example in HDTV
7
Interface :: Transceivers :: RS-422/485
Key Features and Capabilities
Robust Electrostatic Discharge (ESD) Protection
PROFIBUS
Similar to the RS-232, Exar uses state of the art structures to
protect the transceiver pins against ESD of ±15kV without
damage. The ESD structures withstand high ESD in all states:
normal operation, shutdown, and powered down. After an ESD
event, the transceivers keep working without latch-up or damage.
ESD protection can be tested in various ways. The transmitter
outputs and receiver inputs are characterized for protection to
the following limits:
PROFIBUS is in wide use in industrial control and automation
applications and is ruggedized for use in harsh operating
conditions. Higher differential output swing enhances noise
immunity and drive longer data cables.
•
•
•
1/8 Unit Load
The standard RS-485 receiver input impedance is 12kΩ (1 unit
load). A standard driver can drive up to 32 unit loads. The 1/8th
unit load receiver input impedance (96kΩ), thereby allowing
±15kV using the Human Body Model
±8kV using the Contact Discharge method specified eight times as many (up to 256) transceivers to be connected
in parallel on a communication line. Any combination of these
in IEC 61000-4-2
±15kV using the Air-Gap Discharge method specified devices and other RS-485 transceivers, up to a total of 32 unit
loads, may be connected to the line.
in IEC 61000-4-2
Slew Rate Limited
Slew Rate drivers minimize Electromagnetic Interference (EMI)
and reduce reflections caused by improperly terminated cables.
This allows for error-free data transmission.
RS-485 Example in Industrial Controls
RS-485 Example in Point of Sale (POS)
8
Interface :: Transceivers :: Multiprotocol
Key Features and Capabilities
Robust Electrostatic Discharge (ESD) Protection
Industry’s ONLY Single Chip Solution
Exar uses state of the art structures to protect the multiprotocol
transceiver pins against ESD of ±15kV without damage. The
ESD structures withstand high ESD in all states: normal
operation, shutdown, and powered down. After an ESD event,
the transceivers keep working without latch-up or damage.
ESD protection can be tested in various ways. The transmitter
outputs and receiver inputs are characterized for protection to
the following limits:
Exar is the only one in the industry to offer single chip solutions
and correspondingly Exar’s solution is 40% smaller than our
competitors.
•
•
•
Industry’s Fastest Chip
SP509 is 4X faster than leading competitive solutions.
±15kV using the Human Body Model
Widest Availability of Protocols
±8kV using the Contact Discharge method specified RS-232, RS-485, RS-449, EIA-530,
in IEC 61000-4-2
V.35, V.36, X.21.
±15kV using the Air-Gap Discharge method specified
in IEC 61000-4-2
V.10,
V.11,
V.28,
Multiprotocol Example in Network Switch Router
9
Transceivers
Multiprotocol
Dual
RS-232
3V-5V
SP3220E/EU, SP3226E,
SP3227E
RS-232, V.28,
RS-485, RS-422,
V.24
SP331, SP332
SP334
3.3V
3.3V
SP3222E/EB/EH/EU,
SP3223E/EB/EH/EU,
SP3224E, SP3225E,
SP3232E/EB/EH/EU,
SP385E
SP3072E, SP3075E,
SP3078E, SP3485
SP3070E, SP3071E,
SP3073E, SP3074E,
SP3076E, SP3077E,
SP3490, SP3491,
SP490/E, SP491/E
Quad Drivers
Full Duplex
SP3070E, SP3071E,
SP3073E, SP3074E,
SP3076E, SP3077E,
SP3490, SP3491,
SP3496E, SP3497E
SP490/E, SP491/E
SP26LV431
3 Tx / 5 Rx
SP3243E/EB/EH/EU,
SP3244E, SP3245E
SP3072E, SP3075E,
SP3078E, SP3485,
SP3495E
Full Duplex
3 Tx / 2 Rx
SP3203
Half Duplex
Half Duplex
2 Tx/ 2 Rx
V.11, V.35
SP322
RS-485
1 Tx / 1 Rx
V.35
SP320
RS-422
Quad Receivers
SP26LV432
5 Tx / 3 Rx
SP3238E, SP3239E,
SP3249E
Multi
RS-232, RS-449,
EIA-530, V.10,
V.11, V.28, V.35,
V.36, X.21
SP3508, SP507,
SP508E, SP509E,
SP503, SP504,
SP505A, SP505B,
SP506, SP526
5V
5V
2 Tx / 2 Rx
SP202E, SP232A/E,
SP233A/E, SP310A/E,
SP312A/E
4 Tx / 3 Rx
Half Duplex
SP1481E, SP1485E,
SP1486E, SP3082E,
SP3085E, SP3088E,
SP4082E, SP481E,
SP483/E, SP485/E/R
Half Duplex
SP1481E, SP1485E,
SP1486E, SP3082E,
SP3085E, SP3088E,
SP4082E, SP481E,
SP483/E, SP485/E/R
SP206, SP236A
4 Tx / 4 Rx
SP208/E/EH, SP238A
4 Tx / 5 Rx
SP211/E/EH, SP213E/EH
5 Tx / 3 Rx
SP207/E
6 Tx / 10Rx
SP2209E
10
5V
Full Duplex
SP1490E, SP1491E,
SP3080E, SP3081E,
SP3083E, SP3084E,
SP3086E, SP3087E,
SP490/E, SP491E
Quad Drivers
SP486, SP487
Quad Receivers
SP488
Full Duplex
SP1490E, SP1491E,
SP3080E, SP3081E,
SP3083E, SP3084E,
SP3086E, SP3087E,
SP490/E, SP491E
Quad Drivers
SP486, SP487
Quad Receivers
SP488
Additional Information on Key Products
Interface :: UART :: 8-Bit
Part Number
Description
XR16L570
Smallest 1.62V to 5.5V UART with 16-Byte FIFO and PowerSave
CPU
Data Rate @
Tx/Rx FIFO
Interface 5/3.3/2.5/1.8V (Mb/s) Counters
Channel
1
XR16M2750/V2750
High Performance DUART with 64-Byte FIFO
2
XR16M2751/V2751
1.62V to 3.63V High Performance DUART with 64-Byte FIFO
2
XR16V654
2.25V to 3.6V Quad UART with 64-Byte FIFO
4
XR16V798
High Performance 2.25V to 3.6V Octal UART with Fractional Baud Rate
8
Intel
3.0/2.0/1.5/na
Intel or
Motorola
Intel or
Motorola
Intel or
Motorola
Intel or
Motorola
Tx/Rx FIFO
Auto
IrDA
Auto 5V Tolerant
INT Trigger RTS/CTS Support RS-485
Inputs
4 Levels/
Yes
Yes
No
Yes
4 Levels
Program/
Yes
Yes
Yes
Yes
Program
Program/
Yes
Yes
Yes
Yes
Program
4 Levels/
Yes
Yes
No
Yes
4 Levels
Program/
Yes
Yes
Yes
Yes
Program
No
na/8/6.25/na
Yes
na/8/6.25/na
Yes
na/16/12.5/na
No
na/8/6.25/na
Yes
Supply
Voltage (V)
Package(s)
1.62 - 5.5
QFN-24, QFN-32
2.25 - 3.63
PLCC-44, QFN-32,
TQFP-48
1.62 - 3.63
QFN-32, TQFP-48
2.25 - 3.63
LQFP-64 LQFP-80, PLCC68, QFN-48, QFP-100
2.25 - 3.6
QFP-100
Interface :: UART :: PCI
Channel
CPU
Interface
Data Rate @
5/3.3V (Mb/s)
Tx/Rx FIFO
Counters
Universal (3.3V and 5V) PCI Bus Dual UART
8
PCI Bus (2.2)
6.2/4.0
Yes
XR17D154
Universal (3.3V and 5V) PCI Bus Dual UART
4
PCI Bus (2.2)
6.2/4.0
Yes
XR17D152
Universal (3.3V and 5V) PCI Bus Dual UART
2
PCI Bus (2.2)
6.2/4.0
Yes
XR17V258
66MHZ PCI Bus Octal UART with Power Management Support
8
PCI Bus (3.0)
8.0
Yes
Part Number
Description
XR17D158
Tx/Rx FIFO
INT Trigger
Program/
Program
Program/
Program
Program/
Program
Program/
Program
Auto
RTS/CTS
IrDA
Support
Auto
RS-485
5V Tolerant
Inputs
Supply
Voltage (V)
Package(s)
Yes
Yes
Yes
Yes
3.3, 5
LQFP-144
Yes
Yes
Yes
Yes
3.3, 5
LQFP-144
Yes
Yes
Yes
Yes
3.3, 5
TQFP-100
Yes
Yes
Yes
Yes
3.3
LQFP-144
Interface :: UART :: I²C
Part Number
Description
CPU
Interface
Channel
RS-232 Drivers/
Rx Per CH
Tx/Rx FIFO
Counters
XR20M1170
Single Channel I²C/SPI UART w/64-Byte FIFOs
1
I²C or SPI
N/A
Yes
XR20M1172
Two Channnel I²C/SPI UART w/64-Byte FIFOs
2
I²C or SPI
N/A
Yes
XR20V2170
Single Channel Integrated I²C/SPI UART and RS-232 Transceiver
1
I²C or SPI
3/5
Yes
XR20V2172
Two Channel Integrated I²C/SPI UART and RS-232 Transceiver
2
I²C or SPI
3/5
Yes
Tx/Rx FIFO
INT Trigger
Program/
Program
Program/
Program
Program/
Program
Program/
Program
Tx/Rx
Auto
IrDA 5V Tolerant
Supply
FIFO Size RTS/CTS Support
Inputs
Voltage (V)
Package(s)
64/64
Yes
Yes
No
1.62-3.63
QFN-16, QFN-24
QFN-28, TSSOP-16, TSSOP-24
64/64
Yes
Yes
No
1.62-3.63
QFN-32, TSSOP-28
64/64
Yes
No
No
2.97-5.5
QFN-40
64/64
Yes
Yes
No
2.97-5.5
QFN-64
Interface :: UART :: Combo
Part Number
Description
Channel
XR19L220
Single Channel Integrated UART and RS-232 Transceiver
1
XR19L222
Two Channel Integrated UART and RS-232 Transceiver
2
XR19L400
Single Channel Integrated UART and RS-485 Transceiver
1
XR19L402
Two Channel Integrated UART and RS-485 Transceiver
2
CPU
Interface
Intel or
Motorola
Intel or
Motorola
Intel or
Motorola
Intel or
Motorola
RS-232 Drivers/ Tx/Rx FIFO
Rx Per CH
Counters
3/5
No
3/5
Yes
N/A
Yes
N/A
Yes
Tx/Rx FIFO
INT Trigger
4 Levels/
4 Levels
Program/
Program
Program/
Program
Program/
Program
Tx/Rx
FIFO Size
Auto
RTS/CTS
IrDA
Support
5V Tolerant
Supply
Inputs
Voltage (V)
16/16
Yes
No
Yes
3.0 - 5.5
QFN-40
64/64
Yes
Yes
Yes
3.0 - 5.5
QFN-64
64/64
No
No
Yes
3.3 or 5
QFN-40
64/64
No
Yes
Yes
3.3 or 5
QFN-48
Package(s)
Interface :: UART :: Wireless
Part Number
Description
XR18W750
Wireless UART Controller
XR18W753
Single Chip 868MHZ to 956MHZ RF Transceiver
UART
Channel
Tx/Rx
FIFO
(Bytes)
Auto
RTS/
CTS
5V
Tolerant
Inputs
Parallel (8-bit), Serial, I²C Master
1
64/64
Yes
Yes
N/A
N/A
N/A
N/A
I²C Slave
N/A
N/A
N/A
N/A
868-956MHz
100Kbps
250Kbps
-94dBm
No. of Ext.
Caps
Interfaces
Data Rate
@
868.3MHz
Frequency
Data Rate
@ 903927MHz
Rx
Sensitivity
@100Kbps
Rx
Sensitivity
@250Kbps
Output
Power
Supply
Voltage (V)
Package(s)
N/A
N/A
2.25-3.63
QFN-48
-91dBm
-24-0dBm
2.2-3.6
QFN-48
Nom Cap.
Value (μF)
Shutdown
TL
Tri-State
•
•
Interface :: Transceiver :: RS-232
Part Number
Description
No. of Tx
No. of Rx
Data Rate
(kbps)
Vcc
MAX.(V)
ESD (KV)
Vcc (V)
Typ. ICC
(mA)
Int. Chrg.
Pump
SP3243E
Intelligent +3.0V to +5.5V RS-232 Transceiver
3
5
120
15
5.5
3.3
1.5
•
4
0.1
SP3232E
True +3.0V to +5.5V RS-232 Transceivers
2
2
120
15
5.5
3.3
0.3
•
4
0.1
SP3224E-3227E
Intelligent +3.0V to +5.5V RS-232 Transceiver with Auto On-Line® Plus
1/2
1/2
250/1000
15
5.5
3.3
1.5
•
4
0.1
•
•
SP3244E/3245E
Intelligent +3.0V to +5.5V RS-232 Transceiver with Auto On-Line® Plus
3
5
250/1000
15
5.5
3.3
1
•
4
0.1
•
•
•
•
•
•
Shutdown
Multi-Drop
Nodes
SP202E
High Performance RS-232 Transceivers
2
2
120
15
5.5
5
3
•
4
0.1
SP232E
+/-15KV ESD, 5V Single-Supply RS-232 Drivers/Receivers
2
2
120
15
5.5
5
3
•
4
0.1
SP3238E
Intelligent +3.0V to +5.5V RS-232 Transceiver
5
3
250
15
5.5
3.3
0.3
•
4
0.1
Duplex
Data Rate
(kbps)
Interface :: Transceiver :: RS-422 & RS-485
Vcc (V)
No. of Tx
No. of Rx
ESD (KV)
Typ. ICC
(mA)
Typ. Shut Down Rx Failsafe Rx Failsafe
ICC (μA)
Open
Short
Part Number
Description
SP3070E-3078E
3.3V, 15kV, Failsafe RS-485/RS-422 Full Duplex with Slew Limit
3.3
1
1
Full/Half
250-16000
15
0.8
0.05
•
•
•
256
SP3080E-3088E
Advanced-Failsafe RS-485/RS-422 Transceivers 1/8th Unit Load,
Slew-Rate Limited, ±15kV ESD-Protected
5
1
1
Full/Half
115-20000
15
400
1
•
•
•
256
SP3495E-S3497E
3.3 V High Speed RS-485 Transceiver
3.3
1
1
Full/Half
32000
15
1.5
1
•
•
•
64
SP1486E
5V, 15kV ESD, PROFIBUS RS-485/RS-422 Half Duplex Transceiver
5
1
1
Half
20000
15
400
1
•
•
•
256
SP485E
3.3V Low Power Half-Duplex RS-485 Transceivers w/10Mbps Data Rate
5
1
1
Half
10000
15
1
N/A
•
•
•
32
No. of Tx
No. of Rx
Interface :: Transceiver :: Multiprotocol
Part Number
Description
Data Rate
(kbps)
Typ. ICC
(mA)
ESD (KV) Termination
Supported Protocols
RS-232, RS-449, EIA-530, EIA-530A, V.10,
V.11, V.28, V.35, V.36, X.21
RS-232, RS-449, EIA-530, EIA-530A, V.10,
V.11, V.28, V.35, V.36, X.21
RS-232, RS-449, EIA-530, EIA-530A, V.10,
V.11, V.28, V.35, V.36, X.21
Comments
SP508
Rugged 20Mbps, 8 Channel Multi-Protocol Transceiver
8
8
20000
95
15
Complete
SP509
Rugged 40Mbps, 8 Channel Multi-Protocol Transceiver
8
8
40000
95
15
Complete
SP3508
Rugged 3.3V, 20Mbps, 8 Channel Multiprotocol Tranciever with
Programmable DCE/DTE and Terminination Resistors
8
8
2000
95
4
Complete
SP331
Programmable RS-232/RS-485 Transceiver
4
4
10000
15
2
RS-232, V.28, RS-485, RS-422, V.24
RS-232/RS-485
SP332
RS-232/RS-485 Multi-Mode Serial Transceiver
4
4
5000
25
2
RS-232, V.28, RS-485, RS-422, V.24
RS-232/RS-485 w/Loopback
Single Chip, 15kV
Single Chip, 15kV 40Mbps
3V Single Supply, Single Chip
11
NORTH AMERICA
Exar Corporation, Fremont, CA, USA
Exar Corporation, Palatine, IL, USA
Exar Corporation, Billerica, MA, USA
Exar Corporation, Plano, TX, USA
Exar Corporation, Atlanta, GA, USA
Exar Corporation, Montreal, Quebec, Canada
EUROPE
Exar SARL, Vallauris, France
Exar Ltd, Munich, Germany
Exar Ltd, London, United Kingdom
JAPAN
Exar Japan Corporation, Tokyo, Japan
ASIA PACIFIC
Exar Corporation, Beijing, China
Exar Corporation Shanghai Representative Office, Shanghai, China
Exar Corporation, Shenzhen, China
Exar Corporation, Seoul, Korea
Exar Corporation, Malaysia
Exar Taiwan Corporation, Taipei, Taiwan
www.exar.com
Exar is a trademark of EXAR Corporation. All other trademarks and registered trademarks are property of their respective owners.
XRINTBRO-0708 ©2008 EXAR Corporation