2014 Brochure: Connectivity

Connectivity
UARTs & Bridges
Ethernet
USB
PCIe
PCI
I²C/SPI
8-bit
VLIO
LPC
GPIO Expanders
Serial Transceivers
Multiprotocol
RS-485
RS-422
RS-232
2014
www.exar.com
CONNECTIVIT Y → Table of Contents
Table of Contents.................................................................................................................Page 2
Company Background.........................................................................................................Page 3
Connectivity...........................................................................................................................Page 4
UARTs & Bridges..................................................................................................................Page 6
Ethernet......................................................................................................................Page 6
USB ............................................................................................................................Page 6
PCIe............................................................................................................................Page 7
PCI..............................................................................................................................Page 7
I²C/SPI........................................................................................................................Page 8
LPC.............................................................................................................................Page 8
8-bit.............................................................................................................................Page 8
VLIO............................................................................................................................Page 8
GPIO Expanders.....................................................................................................Page 12
Serial Transceivers.............................................................................................................Page 13
Multiprotocol............................................................................................................Page 14
RS-485.....................................................................................................................Page 15
RS-422.....................................................................................................................Page 15
RS-232......................................................................................................................Page 17
How to Buy: Global Affiliates............................................................................................Page 19
2
CONNECTIVIT Y→ Company Background
Exar Corporation designs, develops and markets high performance analog mixed-signal
integrated circuits and advanced sub-system solutions for data communication, networking,
storage, consumer and industrial applications. Exar’s product portfolio includes power
management and connectivity components, communications products, network security and
storage optimization solutions. Exar has locations worldwide providing real-time customer
support.
Exar Facts
Product Lines
• Entity: Founded 1971, Public: 1985
• Power Management
• Headquarters: Fremont, California
• Connectivity
• Design Centers:
Silicon Valley, California;
Loveland, Colorado;
Eatontown, New Jersey;
Toronto, Canada;
Hangzhou, China;
Wuxi, China
• Data Compression & Security
• High Performance Analog
• Communications
www.exar.com | www.exarcorp.cn
3
CONNECTIVIT Y
The simplest method to send data between two or more electronic devices is to use a UART and a serial transceiver. GPIO expanders are an
easy way to increase the number of I/Os provided by the selected processor or add application specific functionality to embedded systems.
Exar’s Connectivity products have numerous applications across different market segments such as industrial, telecom, and consumer.
GPIO Expander
I²C/SMBus
SPI
GPIO Expander
Multiprotocol
RS-485
RS-422
RS-232
USB
PCIe
USB
PCIe
PCI
PCI
UART
CPU
I²C/SMBus
SPI
XCVR
XCVR
I²C/SPI
8-Bit
VLIO
LPC
Industrial/Embedded Systems
Factory and Process Control
HVAC and Building Automation
Industrial PCs
Security Systems
UART
CPU
I²C/SPI
8-Bit
VLIO
LPC
Networking & Storage
Console Access Ports
Server Management
Remote Network Access
Infrastructure & Communications
Wireless Access Points
ATM Kiosks
Point of Sale (POS)
SYNERGISTIC CONNECTIVIT Y SOLUTIONS
Exar offers a broad portfolio of industry-leading UART, Serial Transceiver and Bridging solutions, including the industry’s fastest data rates
and smallest package UARTs. Exar’s serial transceiver and GPIO expander portfolios include pin compatible replacements and upgrades in
industry standard pinouts.
Software drivers and source code are available for nearly every operating system from Exar’s world class technical support team:
[email protected] and [email protected]
4
CONNECTIVIT Y → UARTs & BRIDGES → UARTs
As 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.
Legacy 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 legacy 8-bit UARTs, Exar also offers I²C/SPI UARTs and conventional PCI
UARTs. Recent innovative UART solutions from Exar include high-performance VLIO UARTs, USB UARTs and PCIe UARTs. Exar UARTs are
found in consumer, industrial, telecommunication, embedded and numerous other applications.
Key Features and Technologies
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
enabling a shorter time-to-market.
Software Compatibility with Previous Generation UARTs
In addition to a pin-to-pin migration path, Exar offers newer UARTs
that are software compatible with previous generation UARTs, thus
simplifying the software driver development. If changes to the software
driver are necessary, in most cases, they are minimal. Software
drivers and source code for various UARTs are available, royalty-free,
from Exar.
Automatic Flow Control
Exar’s enhanced UARTs offer auto RTS/CTS hardware and software
flow control that prevent data loss, thus eliminating the need for retransmission.
FIFO Level Counters
The FIFO level counter feature provides the exact number of bytes
in the FIFO which improves the efficiency of loading data into the TX
FIFO and unloading data out of the RX FIFO.
Programmable Trigger Levels
The Programmable Trigger Level provides the software the flexibility
to optimize the TX and RX trigger levels for the best performance and
throughput. UARTs without the programmable trigger level feature can
only select from a few pre-defined trigger levels.
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 5V Tolerant Inputs
well suited for battery operated systems and handheld devices.
When the UART is operating at a supply voltage of less than 5V, the
inputs can still withstand inputs up to 5V without increasing the power
Industry’s Lowest Power Consumption
consumption or damaging the UART. This allows the UART to function
Exar’s enhanced UARTs are low power devices. In addition, the seamlessly in a mixed voltage environment.
devices feature Sleep and Power Save modes for further power saving
as low as 5 μA in Sleep mode.
Multidrop Mode with Auto Address Detect
This feature simplifies both the hardware and software for 9-bit
Integrated Level Shifters
applications. The receiver will only receive data after an address
Exar offers USB UARTs, I²C/SPI UARTs and 8-bit UARTs with match and will automatically ignore data if the address byte does not
integrated level shifters. Absorbing the level shifter into the UART match.
simplifies the hardware design for space-constrained designs and
minimizes the BOM.
Auto RS-485 Half-Duplex Direction Control with Programmable
Turn-Around Delay
Fastest Data Rates
Exar was the first to introduce this unique feature to simplify the
At 25Mbps, Exar offers the industry’s fastest UARTs. In addition, hardware and software design for half-duplex RS-485 systems.
slower/lower cost crystals and oscillators can be used to generate
higher data rates with Exar’s 8X and 4X sampling rate features.
Integrated Serial Transceivers
Exar offers UARTs with integrated RS-232 or RS-485 transceiver
Fractional Baud Rate Generator
combos making it ideal for simplifying designs and using less board
Exar’s Fractional Baud Rate Generator feature allows more flexibility space in a single small footprint QFN package.
for the designer in selecting a crystal or oscillator, since it can take any
clock source to generate the standard legacy or custom baud rates.
Serial Cable Replacement Wireless Solution
Exar’s Wireless UART chipset consists of a Wireless UART controller
Large FIFOs
and 900MHz RF Transceiver. With Exar’s proprietary firmware, the
Exar offers devices with 1 to 384 Bytes of FIFOs with programmable Wireless UART chipset can be used as a serial cable replacement
trigger levels and FIFO level counters. Larger FIFO sizes allow wireless solution.
increased data throughput by loading and unloading more data per
transaction. Larger FIFOs improve the performance by reducing the
number of interrupts.
Independent TX/RX Baud Rate Generator
The baud rates of the TX and RX no longer have to be the same.
This new feature in the XR16Mxxx single-channel UARTs allows
different TX and RX baud rates so that the single channel UART can
communicate with different UARTs at the same time.
5
CONNECTIVIT Y → UARTs & BRIDGES → USB ETHERNET BRIDGES
Exar’s new USB bridges are highly integrated, feature-rich devices offered in small footprint packages. The XR2280x is a USB 2.0 Hi-Speed (480 Mbps) bridge
to 10/100 Ethernet (integrated MAC and PHY), multi-master I2C, EDGE (Enhanced Dedicated GPIO Entity) and up to 4 UART channels.
Software Drivers
The following software drivers for the USB Ethernet bridges are available from Exar: Windows XP, Vista, 7, 8, 8.1, Server, Embedded, and CE. The I2C master
and EDGE use the HID interface and are compatible with the built-in HID driver in any OS. The Ethernet and UARTs are compatible with the CDC-ECM and
CDC-ACM drivers in Linux, Android and Mac.
USB Ethernet Bridges
UART
Device
XR22804
Data Bus
Interface
Ethernet
MAC/PHY
(Mbps)
UART
Ch.
Max
Data Rate
(Mbps)
UART
Tx/RX FIFO
(Bytes)
Auto HalfDuplex
Control
No. of
GPIOs
(Max)
I2C
Master
ESD
(USB)
Supply Voltage
Range
Packages
USB 2.0 HS
10/100
4
15
1024 / 1024

32

±15kV HBM
4.4V - 5.25V
QFN-56
XR22802
USB 2.0 HS
10/100
2
15
1024 / 1024

32

±15kV HBM
4.4V - 5.25V
QFN-56
XR22801
USB 2.0 HS
10/100
1
15
1024 / 1024

8

±15kV HBM
4.4V - 5.25V
QFN-32
XR22800
USB 2.0 HS
10/100
0
15
1024 / 1024

8

±15kV HBM
4.4V - 5.25V
QFN-32
CONNECTIVIT Y → UARTs & BRIDGES → USB UARTs
Exar’s USB UARTs are fully compliant to the USB 2.0 Full-Speed specifications and are listed on the USB-IF
Integrator’s List. At 12Mbps, Exar’s USB UARTs are the industry’s fastest USB UARTs.
Software Drivers
The following software drivers for the USB UARTs are available from Exar: Windows 2000, XP, Vista, 7, 8, 8.1, Server,
Embedded, CE 4.2, CE 5.0, CE 6.0, CE 7.0, Linux 2.6.x, Linux 3.x.x, and Mac.
USB UARTs (3.3V)
The XR21V141x is available in 1-ch, 2-ch and 4-ch versions. The XR21V141x is a 3.3V device with 5V tolerant inputs. The XR21V141x has an internal 48MHz clock. Custom
Vendor IDs, Product IDs, USB attributes and maximum power consumption can be programmed via an external I²C EEPROM.
Data Bus
Interface
UART
Ch.
Max
Data Rate
(Mbps)
XR21V1414
USB 2.0 FS
4
12
128 / 384
XR21V1412
USB 2.0 FS
2
12
128 / 384
XR21V1410
USB 2.0 FS
1
12
128 / 384
UART
Device
Auto HalfDuplex
Control
Multidrop
(9-bit) Mode
Fractional
Baud Rate
Generator
Power
Down
Mode
5V Tolerant
Inputs
Supply Voltage
Range
Packages






2.97V-3.63V
TQFP-48






2.97V-3.63V
QFN-32






2.97V-3.63V
QFN-16
TX/RX FIFO Auto Flow
Bytes
Control
USB UARTs (5V)
The XR21B1411 is a 1-ch USB UART that can be powered directly from the 5V supply voltage from VBUS. Custom Vendor IDs and Product IDs can be programmed via the
internal OTP, therefore eliminating the requirement for an external EEPROM. In addition, the XR21B1411 has a voltage reference pin to adjust the I/O levels of the UART/GPIO
signals which can greatly extend the battery life of portable applications.
UART
Device
XR21B1411
Data Bus
Interface
UART
Ch.
Max
Data Rate
(Mbps)
USB 2.0 FS
1
12
TX/RX FIFO Auto Flow
Bytes
Control
128 / 384

Auto HalfDuplex
Control
Multidrop
(9-bit)
Mode
Fractional
Baud Rate
Generator
Power
Down
Mode
Integrated
Level
Shifters
Supply Voltage
Range
Packages





4.5V-5.5V
QFN-16
USB UARTs (3.3V or 5V)
The XR21B142x are available in 1-ch, 2-ch and 4-ch versions. Vendor ID, Product ID, power mode, remote wakeup support, maximum power, and numerous other settings
may be programmed in the on-chip OTP memory via the USB interface. Any UART baud rate up to 12 Mbps may be generated using the internal oscillator and fractional baud
rate generator. The UART pins for each port may also be configured as GPIO.
Multidrop
Fractional
Power
5V
UART
Data Bus
UART
Max Data
TX/RX FIFO Max Number Auto Flow
Supply Voltage
(9-bit)
Baud Rate
Down
Tolerant
Packages
Device
Interface
Ch.
Rate (Mbps)
Bytes
of GPIOs
Control
Range
Mode
Generator
Mode
Inputs
XR21B1424
USB 2.0 FS
4
12
512 / 512
40





3.0V - 5.25V
LQFP-64
XR21B1422
USB 2.0 FS
2
12
512 / 512
20





3.0V - 5.25V
QFN-40
XR21B1420
USB 2.0 FS
1
12
512 / 512
10





3.0V - 5.25V
QFN-28
HID USB UARTs (3.3V or 5V) The XR21B1421 is an HID class USB to serial bridge. The USB interface supports suspend, resume and remote wakeup operations. Vendor ID, Product ID, power mode,
remote wakeup support, maximum power values, and numerous other settings can be programmed into the on-chip OTP via the USB interface using either HID reports or
Exar’s OTP programming tools.
Multidrop
Fractional
Power
5V
UART
Data Bus
UART
Max Data
TX/RX FIFO Max Number Auto Flow
Supply Voltage
(9-bit)
Baud Rate
Down
Tolerant
Packages
Device
Interface
Ch.
Rate (Mbps)
Bytes
of GPIOs
Control
Range
Mode
Generator
Mode
Inputs
QFN-24
XR21B1421
USB 2.0 FS
1
12
512 / 512
10
3.0V - 5.25V





QFN-28
6
CONNECTIVIT Y → UARTs & BRIDGES → PCIe UARTs
Exar’s PCIe UARTs (XR17V35x) are x1 PCIe endpoints that are compliant with the PCIe 2.0 Gen 1
(2.5Gbps) specifications. At 25Mbps, the PCIe UARTs are the industry’s fastest UARTs. The PCIe
UARTs have large 256 byte TX/RX FIFOs, 16 multi-purpose I/Os and support multidrop (9-bit) mode.
Software Drivers
The PCIe UARTs are software compatible with the PCI UARTs. The following software drivers for the PCI and PCIe UARTs are available from
Exar: Windows 2000, XP, Vista, 7, 8, 8.1, Server, Embedded, CE 4.2, CE 5.0, CE 6.0, CE 7.0, Linux 2.4.x, Linux 2.6.x, Linux 3.x.x and QNX 4.25.
PCIe UARTs
Max
Auto
Fractional
TX/RX FIFO Program. Auto
Multidrop
Power
5V
Data
HalfBaud
FIFO
Level
Trigger
Flow
(9-bit)
Down Tolerant
Rate
Duplex
Rate
Bytes Counters Levels Control
Mode
Mode
Inputs
(Mbps)
Control
Generator
Supply
Voltage
Range
No. of
GPIOs
Packages

3.0V-3.6V
16
FPBGA-176


3.0V-3.6V
16
FPBGA-176


3.0V-3.6V
16
FPBGA-113
UART
Device
Data Bus UART
Interface Ch.
XR17V358
PCIe 2.0
(2.5Gbps)
8
25
256 /
256







XR17V354
PCIe 2.0
(2.5Gbps)
4
25
256 /
256






XR17V352
PCIe 2.0
(2.5Gbps)
2
25
256 /
256






CONNECTIVIT Y → UARTs & BRIDGES → PCI UARTS
Exar has the largest PCI UART family in the industry offering 33MHz and 66MHz PCI UARTs. The 33MHz
PCI UARTs consist of the XR17C15x which are 5V PCI UARTs and the XR17D15x which are Universal
(3.3V or 5V) PCI UARTs. The 66MHz PCI UARTs are the XR17V25x. Exar is the only UART vendor in the
industry to have a 66MHz PCI UART. All Exar PCI UARTs have passed PCI compliance and are listed on
the PCI-SIG Integrator’s List.
PCI UARTs (66MHz)
Data Bus
Interface
UART
Ch.
Max
Data Rate
(Mbps)
TX/RX
FIFO
Bytes
XR17V258
PCI Bus 3.0
8
8
64 / 64






XR17V252
PCI Bus 3.0
2
8
64 / 64






UART
Device
FIFO
Program.
Auto HalfAuto Flow
Level
Trigger
Duplex
Control
Counters Levels
Control
Fractional
Baud Rate
Generator
Power
5V
Down Tolerant
Mode Inputs
Supply
Voltage
Range
No. of
GPIOs
Packages

3.0V-3.6V
8
LQFP-144

3.0V-3.6V
8
TQFP-100
Supply
Voltage
Range
No. of
GPIOs
Packages
PCI UARTs (Universal 3.3V or 5V)
Data Bus
Interface
UART
Ch.
Max
Data Rate
(Mbps)
TX/RX
FIFO
Bytes
XR17D158
PCI Bus 2.2
8
6.25
64 / 64






3.0V-3.6V
4.5V-5.5V
8
LQFP-144
XR17D154
PCI Bus 2.2
4
6.25
64 / 64






3.0V-3.6V
4.5V-5.5V
8
LQFP-144
XR17D152
PCI Bus 2.2
2
6.25
64 / 64






3.0V-3.6V
4.5V-5.5V
8
TQFP-100
Data Bus
Interface
UART
Ch.
Max
Data Rate
(Mbps)
TX/RX
FIFO
Bytes
Supply
Voltage
Range
No. of
GPIOs
Packages
XR17C158
PCI Bus 2.2
8
6.25
64 / 64






4.5V-5.5V
8
LQFP-144
XR17C154
PCI Bus 2.2
4
6.25
64 / 64






4.5V-5.5V
8
LQFP-144
UART
Device
FIFO
Program.
Auto HalfAuto Flow
Level
Trigger
Duplex
Control
Counters Levels
Control
Fractional
Baud Rate
Generator
Power
5V
Down Tolerant
Mode Inputs
PCI UARTs (5V)
UART
Device
FIFO
Program.
Auto HalfAuto Flow
Level
Trigger
Duplex
Control
Counters Levels
Control
Fractional
Baud Rate
Generator
Power
5V
Down Tolerant
Mode Inputs
7
CONNECTIVIT Y → UARTs & BRIDGES → I² C/SPI UARTS
The simple 2-wire (I²C) or 4-wire (SPI) interface enables an Exar I²C/SPI UART to easily be added to any embedded system design. The I²C
interface can support fast mode with an I²C clock frequency of up to 400kHz. The SPI interface can support a clock frequency of up to 5MHz.
The maximum UART baud rate is 16Mbps at 3.3V.
I²C/SPI UARTs
UART
Device
Max
Data Rate
(Mbps)
Data Bus UART
Interface Ch.
XR20M1172
I²C or
SPI
2
XR20M1280
I²C or
SPI
1
XR20M1170
I²C or
SPI
1
TX/RX
FIFO
Bytes
FIFO Program.
Auto Half- Multidrop Fractional Power Integrated
Auto Flow
Level
Trigger
Duplex
(9-bit)
Baud Rate Down
Level
Control
Counters Levels
Control
Mode
Generator Mode Shifters
16.0 @ 3.3V
12.5 @ 2.5V 64 / 64
8.0 @ 1.8V
24.0 @ 3.3V
16.0 @ 2.5V 128 / 128
10.0 @ 1.8V
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
64 / 64




















Supply
Voltage
Range
No. of
GPIOs
Packages
1.62V-3.63V
8
8
QFN-32
TSSOP-28
1.62V-3.63V
16
8
4
1.62V-3.63V
n/a
n/a
8
8
QFN-40
QFN-32
QFN-24
QFN-16
QFN-24
TSSOP-16
TSSOP-24
CONNECTIVIT Y → UARTs & BRIDGES → LPC UARTS
XR28V38x are enhanced UARTs for the Intel Low Pin Count (LPC) bus interface. The LPC UARTs do not require custom software drivers and
are based on the industry standard 16550 register set. They support any 16 bit I/O address on the system.
LPC UARTs (3.3V)
UART
Device
Data Bus UART
Max Data
Interface Ch.
Rate (Mbps)
TX/RX FIFO
Bytes
Auto Flow
Control
Auto HalfDuplex Control
Multidrop
(9-bit) Mode
Watchdog
Timer
Power Down
Mode
5V Tolerant
Inputs
Supply Voltage
Range
Packages
XR28V384
Intel LPC
4
3
128 / 128






3.0V - 3.6V
TQFP-48
XR28V382
Intel LPC
2
3
128 / 128






3.0V - 3.6V
QFN-32
CONNECTIVIT Y → UARTs & BRIDGES → 8 - Bit / VLIO UARTS
Intel bus interface vs. Motorola bus interface
The primary difference between the Intel bus interface and the Motorola bus interface is the read and write control lines. For the Intel bus
interface, there are separate control lines for the read and write strobes (IOR# and IOW#). However, the Motorola bus interface only has a
single control line (R/W#).
Software Drivers/Sample Test Programs
Exar’s 8-bit UARTs will work with the standard serial driver in most operating systems. However, software drivers to support Exar’s enhanced
features are available for Windows 95/98, NT 4.0, 2000, XP, CE 4.2, CE 5.0 and CE 6.0 for various UARTs. In addition, VxWorks 5.5, Linux
2.4.x, Linux 2.6.x drivers and sample DOS test programs are available.
8-bit UARTs: “C” UART Product Family
The “C” UART product family is the 5V UART product family. Some UARTs in this product family are 5V only devices, but most UARTs in this family can operate with a 2.97V
supply voltage. The maximum baud rate is up to 6.25Mbps.
UART
Device
Data Bus UART
Interface
Ch.
Max
Data Rate
(Mbps)
TX/RX
FIFO
Bytes
XR16C864
Intel or
Motorola
4
2.0 @ 5V
1.5 @ 3.3V
128 / 128





XR16C854 /
854D
Intel or
Motorola
4
2.0 @ 5V
1.5 @ 3.3V
128 / 128





ST16C654 /
654D
Intel or
Motorola
4
1.5 @ 5V
0.5 @ 3.3V
64 / 64
ST16C554 /
554D
Intel or
Motorola
4
1.5 @ 5V
0.5 @ 3.3V
16 / 16
2.97V-5.5V
ST68C554
Motorola
4
1.5 @ 5V
0.5 @ 3.3V
16 / 16
2.97V-5.5V
8
FIFO
Program. Auto
Level
Trigger
Flow
Counters Levels Control

Auto HalfDuplex
Control
Multidrop Fractional Power
5V
(9-bit) Baud Rate Down Tolerant
Mode
Generator Mode Inputs

Supply
Voltage
Range
Packages

2.97V-5.5V
QFP-100

2.97V-5.5V
2.97V-5.5V
PLCC-68
LQFP-64
QFP-100
PLCC-68
LQFP-64
QFP-100
PLCC-68
LQFP-64
PLCC-68
8-bit UARTs: “C” UART Product Family
The “C” UART product family is the 5V UART product family. Some UARTs in this product family are 5V only devices, but most UARTs in this family can operate with a 2.97V
supply voltage. The maximum baud rate is up to 6.25Mbps.
UART
Device
Data Bus UART
Interface
Ch.
Max
Data Rate
(Mbps)
TX/RX
FIFO
Bytes
FIFO
Program. Auto
Level
Trigger
Flow
Counters Levels Control
Supply
Voltage
Range
Packages
ST16C454
Intel or
Motorola
4
1.5 @ 5V
0.5 @ 3.3V
1/1
2.97V-5.5V
PLCC-68
XR16C2850
Intel
2
6.25 @ 5V
4.0 @ 3.3V
128 / 128






2.97V-5.5V
PLCC-44
TQFP-48
XR16C2852
Intel
2
6.25 @ 5V
4.0 @ 3.3V
128 / 128






2.97V-5.5V
PLCC-44
ST16C2550
Intel
2
4.0 @ 5V
1.875 @ 3.3V
16 / 16

2.97V-5.5V
PLCC-44
TQFP-48
ST16C2552
Intel
2
4.0 @ 5V
1.875 @ 3.3V
16 / 16

2.97V-5.5V
PLCC-44
ST16C2450
Intel
2
1.5 @ 5V
0.5 @ 3.3V
1/1

2.97V-5.5V
PLCC-44
TQFP-48
XR16C850
Intel or PC
COM Port
1
2.0 @ 5V
1.375 @ 3.3V
128 / 128


2.97V-5.5V
PLCC-44
TQFP-48
ST16C650A
Intel or PC
COM Port
1
3.0 @ 5V
2.0 @ 3.3V
32 / 32



2.97V-5.5V
PLCC-44
TQFP-48
ST16C580
Intel
1
1.5 @ 5V
0.5 @ 3.3V
16 / 16


2.97V-5.5V
TQFP-48
ST16C550
Intel
1
1.5 @ 5V
0.5 @ 3.3V
16 / 16
2.97V-5.5V
PLCC-44
TQFP-48
ST16C450
Intel
1
1.5 @ 5V
0.5 @ 3.3V
1/1
2.97V-5.5V
PLCC-44
TQFP-48
ST16C1550
Intel
1
1.5 @ 5V
0.5 @ 3.3V
16 / 16

2.97V-5.5V
PLCC-28
TQFP-48
XR82C684
Intel or
Motorola
4
1.0 @ 5V
3 /3

4.5V-5.5V
PLCC-44
PLCC-68
ST16C552* /
552A*
Intel
2
1.5 @ 5V
0.5 @ 3.3V
16 / 16


2.97V-5.5V
PLCC-68
ST16C452* /
452PS*
Intel
2
1.5 @ 5V
0.5 @ 3.3V
1/1


2.97V-5.5V
PLCC-68
XR68/88C192
Intel or
Motorola
2
1.0 @ 5V
0.5 @ 3.3V
16 / 16




2.97V-5.5V
PLCC-44
LQFP-44
XR68/88C92
Intel or
Motorola
2
1.0 @ 5V
0.5 @ 3.3V
8/8




2.97V-5.5V
PDIP-40
PLCC-44
LQFP-44
XR68C681
Motorola
2
1.0 @ 5V
1/3



4.5V-5.5V
PLCC-44
PDIP-40
XR88C681
Intel
2
1.0 @ 5V
1/3



4.5V-5.5V
PLCC-44
PDIP-40
ST16C1450
Intel
1
1.5 @ 5V
0.5 @ 3.3V
1/1

2.97V-5.5V
PLCC-28
TQFP-48
ST16C1551
Intel
1
1.5 @ 5V
0.5 @ 3.3V
16 / 16

2.97V-5.5V
PLCC-28
TQFP-48



Auto HalfDuplex
Control
Multidrop Fractional Power
5V
(9-bit) Baud Rate Down Tolerant
Mode
Generator Mode Inputs


*This device also has a printer port.
8-bit UARTs: “L” UART Product Family
Most UARTs in the “L” UART product family can operate with a supply voltage of 2.25V-5.5V. All UARTs in the “L” UART product family have 5V tolerant inputs so they can
interface with legacy 5V devices but can operate at lower supply voltage. In addition to operating at a lower voltage, the “L” UART product family has a Sleep/PowerSave mode
to minimize the power consumption. The maximum baud rate is up to 6.25Mbps.
UART
Device
Data Bus UART
Interface
Ch.
Max
Data Rate
(Mbps)
TX/RX
FIFO
Bytes
FIFO
Program. Auto
Level
Trigger
Flow
Counters Levels Control
Auto HalfDuplex
Control
Multidrop Fractional Power
5V
(9-bit) Baud Rate Down Tolerant
Mode
Generator Mode Inputs
Supply
Voltage
Range
Packages
XR16L788
Intel or
Motorola
8
6.25 @ 5V
4.0 @ 3.3V
64 / 64






2.25V-5.5V
QFP-100
XR16L784
Intel or
Motorola
4
6.25 @ 5V
4.0 @ 3.3V
64 / 64






2.25V-5.5V
LQFP-64
XR16L2750
Intel
2
6.0 @ 5V
4.0 @ 3.3V
3.0 @ 2.5V
64 / 64






2.25V-5.5V
PLCC-44
TQFP-48
XR16L2751
Intel or
Motorola
2
6.0 @ 5V
4.0 @ 3.3V
3.0 @ 2.5V
64 / 64






2.25V-5.5V
TQFP-48
XR16L2752
Intel
2
6.0 @ 5V
4.0 @ 3.3V
3.0 @ 2.5V
64 / 64






2.25V-5.5V
PLCC-44
9
8-bit UARTs: “L” UART Product Family
Most UARTs in the “L” UART product family can operate with a supply voltage of 2.25V-5.5V. All UARTs in the “L” UART product family have 5V tolerant inputs so they can
interface with legacy 5V devices but can operate at lower supply voltage. In addition to operating at a lower voltage, the “L” UART product family has a Sleep/PowerSave mode
to minimize the power consumption. The maximum baud rate is up to 6.25Mbps.
UART
Device
Data Bus UART
Interface
Ch.
Max
Data Rate
(Mbps)
TX/RX
FIFO
Bytes
FIFO
Program. Auto
Level
Trigger
Flow
Counters Levels Control
Auto HalfDuplex
Control
Multidrop Fractional Power
5V
(9-bit) Baud Rate Down Tolerant
Mode
Generator Mode Inputs
Supply
Voltage
Range
Packages
XR16L2550
Intel
2
4.0 @ 5V
2.0 @ 3.3V
1.0 @ 2.5V
16 / 16



2.25V-5.5V
PLCC-44
TQFP-48
QFN-32
XR16L2551
Intel or
Motorola
2
4.0 @ 5V
2.0 @ 3.3 V
1.0 @ 2.5V
16 / 16



2.25V-5.5V
TQFP-48
QFN-32
XR16L2552
Intel
2
4.0 @ 5V
2.0 @ 3.3V
1.0 @ 2.5V
16 / 16



2.25V-5.5V
PLCC-44
TQFP-48
XR16L570
Intel
1
3.0 @ 5V
2.0 @ 3.3V
1.5 @ 2.5V
0.75 @ 1.8V
16 / 16



1.62V-5.5V
QFN-24
QFN-32
XR16L580
Intel or
Motorola
1
3.0 @ 5V
2.0 @ 3.3V
1.5 @ 2.5V
16 / 16



2.25V-5.5V
QFN-24
QFN-32
TQFP-48
8-bit UARTs: “V” UART Product Family
The “V” UART product family is a high performance UART product family. At 3.3V, some UARTs in this UART product family have a maximum baud rate of 16Mbps. The
operating voltage range for the “V” UARTs is from 2.25V-3.63V. All “V” UARTs have 5V tolerant inputs. The “V” UART product family was the first UART product family to have
Exar’s innovative Fractional Baud Rate Generator feature.
Auto
FIFO
Program. Auto
Multidrop Fractional Power
5V
HalfLevel
Trigger
Flow
(9-bit) Baud Rate Down Tolerant
Duplex
Counters Levels Control
Mode
Generator Mode Inputs
Control
Max
Data Rate
(Mbps)
TX/RX
FIFO
Bytes
8
8.0 @ 3.3V
6.25 @ 2.5V
64 / 64

Intel or
Motorola
8
15.0 @ 3.3V
10.0 @ 2.5V
32 / 32
XR16V598
Intel or
Motorola
8
15.0 @ 3.3V
10.0 @ 2.5V
16 / 16
XR16V654 /
654D
Intel or
Motorola
4
16.0 @ 3.3V
12.5 @ 2.5V
64 / 64



XR16V564 /
564D
Intel or
Motorola
4
16.0 @ 3.3V
12.5 @ 2.5V
32 / 32



XR16V554 /
554D
Intel or
Motorola
4
8.0 @ 3.3V
6.25 @ 2.5V
16 / 16
XR16V2750
Intel
2
8.0 @ 3.3V
6.25 @ 2.5V
64 / 64





XR16V2751
Intel or
Motorola
2
8.0 @ 3.3V
6.25 @ 2.5V
64 / 64




XR16V2752
Intel
2
8.0 @ 3.3V
6.25 @ 2.5V
64 / 64




XR16V2650
Intel
2
16.0 @ 3.3V
12.5 @ 2.5V
32 / 32

XR16V2651
Intel or
Motorola
2
16.0 @ 3.3V
12.5 @ 2.5V
32 / 32
XR16V2652
Intel
2
16.0 @ 3.3V
12.5 @ 2.5V
XR16V2550
Intel
2
XR16V2551
Intel or
Motorola
XR16V2552
Intel
UART
Device
Data Bus UART
Interface
Ch.
XR16V798
Intel or
Motorola
XR16V698
10
Supply Voltage
Range
Packages



2.25V-3.63V
QFP-100




2.25V-3.63V
QFP-100




2.25V-3.63V
QFP-100

2.25V-3.63V
QFN-48
PLCC-68
LQFP-64
LQFP-80
QFP-100

2.25V-3.63V
QFN-48
PLCC-68
LQFP-64
LQFP-80

2.25V-3.63V
QFN-48
PLCC-68
LQFP-64
LQFP-80


2.25V-3.63V
TQFP-48
QFN-32



2.25V-3.63V
TQFP-48



2.25V-3.63V
PLCC-44
QFN-32




2.25V-3.63V
TQFP-48
QFN-32





2.25V-3.63V
TQFP-48
QFN-32
32 / 32





2.25V-3.63V
PLCC-44
QFN-32
16.0 @ 3.3V
12.5 @ 2.5V
16 / 16





2.25V-3.63V
TQFP-48
QFN-32
2
16.0 @ 3.3V
12.5 @ 2.5V
16 / 16





2.25V-3.63V
TQFP-48
QFN-32
2
16.0 @ 3.3V
12.5 @ 2.5V
16 / 16





2.25V-3.63V
PLCC-44
QFN-32









8-bit UARTs: “M” UART Product Family
The “M” UART product family is a low voltage and high performance UART product family. The “M” UART product family can operate from 1.62V-3.63V with a maximum baud
rate of up to 16Mbps at 3.3V. Like the “V” UART product family, the “M” UART product family also has the Fractional Baud Rate Generator feature. Unlike the “V” UART product
family, the “M” UART product family does not have 5V tolerant inputs.
TX/RX
FIFO
Bytes
FIFO
Program.
Auto Half- Multidrop Fractional Power
Auto Flow
Level
Trigger
Duplex
(9-bit) Baud Rate Down
Control
Counters Levels
Control
Mode
Generator Mode
UART
Device
Data Bus UART
Max
Interface
Ch. Data Rate (Mbps)
XR16M698
Intel or
Motorola
8
15.0 @ 3.3V
10.0 @ 2.5V
5.0 @ 1.8V
32 / 32





XR16M598
Intel or
Motorola
8
15.0 @ 3.3V
10.0 @ 2.5V
5.0 @ 1.8V
16 / 16





XR16M654 /
654D
Intel or
Motorola
4
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
64 / 64


XR16M564 /
564D
Intel or
Motorola
4
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
32 / 32


XR16M554 /
554D
Intel or
Motorola
4
8.0 @ 3.3V
6.25 @ 2.5V
4.0 @ 1.8V
16 / 16
XR16M2750
Intel
2
XR16M2751
Intel or
Motorola
2
XR16M2752
Intel
2
XR16M752
Intel
2
XR68M752
Intel or
Motorola
2
XR16M2650
Intel
2
XR16M2651
Intel or
Motorola
2
XR16M2550
Intel
2
XR16M2551
Intel or
Motorola
2
XR16M890*
Intel/
Motorola/
VLIO
1
XR16M770
Intel
XR16M780
8.0 @ 3.3V
6.25 @ 2.5V
4.0 @ 1.8V
8.0 @ 3.3V
6.25 @ 2.5V
4.0 @ 1.8V
8.0 @ 3.3V
6.25 @ 2.5V
4.0 @ 1.8V
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
16.0 @ 3.3V
12.5 @ 2.5V
8.0 @ 1.8V
Supply Voltage
Range
Packages

1.62V-3.63V
QFP-100

1.62V-3.63V
QFP-100

1.62V-3.63V
QFN-48
PLCC-68
LQFP-64
LQFP-80
QFP-100

1.62V-3.63V
QFN-48
PLCC-68
LQFP-64
LQFP-80
1.62V-3.63V
QFN-48
PLCC-68
LQFP-64
LQFP-80
64 / 64






1.62V-3.63V
TQFP-48
QFN-32
64 / 64






1.62V-3.63V
TQFP-48
64 / 64






1.62V-3.63V
PLCC-44
QFN-32
64 / 64






1.62V-3.63V
TQFP-48
QFN-32
64 / 64






1.62V-3.63V
TQFP-48
QFN-32
32 / 32




1.62V-3.63V
TQFP-48
QFN-32
32 / 32




1.62V-3.63V
TQFP-48
QFN-32
16 / 16




1.62V-3.63V
TQFP-48
QFN-32
16 / 16




1.62V-3.63V
TQFP-48
QFN-32
25.0 @ 3.3V
16.0 @ 2.5V
9.0 @ 1.8V
128 / 128







1.62V-3.63V
TQFP-48
QFN-40
QFN-32
1
16.0 @ 3.3V
12.5 @ 2.5V
7.5 @ 1.8V
64 / 64







1.62V-3.63V
QFN-24
QFN-32
Intel or
Motorola
1
16.0 @ 3.3V
12.5 @ 2.5V
7.5 @ 1.8V
64 / 64







1.62V-3.63V
QFN-32
TQFP-48
XR16M781
VLIO
1
20.0 @ 3.3V
16.0 @ 2.5V
10.0 @ 1.8V
64 / 64







1.62V-3.63V
QFN-24
QFN-32
XR16M570
Intel
1
16.0 @ 3.3V
12.5 @ 2.5V
7.5 @ 1.8V
16 / 16






1.62V-3.63V
QFN-24
QFN-32
XR16M580
Intel or
Motorola
1
16.0 @ 3.3V
12.5 @ 2.5V
7.5 @ 1.8V
16 / 16






1.62V-3.63V
QFN-32
TQFP-48
XR16M581
VLIO
1
20.0 @ 3.3V
16.0 @ 2.5V
10.0 @ 1.8V
16 / 16






1.62V-3.63V
QFN-24
QFN-32
*This device has integrated level shifters and up to 16 GPIOs.
11
CONNECTIVIT Y → UARTs & BRIDGES → GPIO Expanders
The newest product family in Exar’s Connectivity portfolio is the GPIO Expander, offered with either I2C/SMBus or SPI interfaces. The I2C/
SMBus GPIO Expanders are pin and software compatible to existing 8-bit and 16-bit I2C/SMBus GPIO Expanders, but with enhanced features
and functionality. The SPI GPIO Expanders operate with a high speed SPI clock of up to 26MHz.
Individually Programmable
Each GPIO can be individually configured as an input or an output.
In addition, each feature listed below can individually enabled or
disabled for each GPIO.
Stored Interrupt Status
The GPIO Expanders have an interrupt status register which allows the
software in the host controller to easily identify which input generated
the interrupt. The GPIO Expander can also be configured so that the
interrupt status remains in the status register even after the input has
changed back to its original state.
Internal Pull-up Resistors
When configured as an input, the internal pull-up resistor can be
enabled for selected GPIOs configured as inputs. Exar’s “P” devices Input Glitch Filtering
have the internal pull-up resistor enabled at power-up, which can be Selectable GPIO input filtering ignores pulses that are less than 225
individually disabled on each input.
ns. The GPIO state will not be updated and there will not be any
interrupts reported from noise or small glitches when this feature is
Rising / Falling Edge Interrupts
enabled.
Each GPIO input can be configured to generate an interrupt on the
rising edge, falling edge, or both edges.
Tri-State Outputs
GPIO outputs can be individually tri-stated. This is useful for
Interrupt Mask / Enable
applications where the GPIO output is connected to an input of a
Interrupts can be masked / enabled for each GPIO input so that only device that is powered down, or when driving a tri-state logic input pin.
selected inputs will generate interrupts.
I2C GPIO Expanders
CPU Interface
No. of GPIOs
Interrupt Output
Pin
XRA1200
I²C/SMBus
8

XRA1200P
I²C/SMBus
8

XRA1201
I²C/SMBus
16

XRA1201P
I²C/SMBus
16

XRA1202
I²C/SMBus
8


XRA1202P
I²C/SMBus
8


XRA1203
I²C/SMBus
16


XRA1206
I²C/SMBus
8


XRA1207
I²C/SMBus
16


Name
Reset Input
Integrated
Internal Pull-Up Resistors
Pin
Level Shifters
Enabled at Power-up
5V Tol Inputs
Supply Voltage
Range

1.65V - 3.6V

1.65V - 3.6V

1.65V - 3.6V

1.65V - 3.6V

1.65V - 3.6V

1.65V - 3.6V

1.65V - 3.6V


1.65V - 3.6V


1.65V - 3.6V
5V Tol Inputs
Supply Voltage
Range



Packages
QFN-16
TSSOP-16
QFN-16
TSSOP-16
QFN-24
TSSOP-24
QFN-24
TSSOP-24
QFN-16
TSSOP-16
QFN-16
QFN-24
TSSOP-24
QFN-16
TSSOP-16
QFN-24
TSSOP-24
GPIO Expander Application Diagram
VCCA
VCCA
VCCA
VCCB
5V
P0
CPU
FPGA
MCU
ASIC
SDA
P1
P2
SCL
P3
Push Button
RESET
INT
P4
P5
P6
System Reset
Temp Sensor
Battery Voltage
P7
Limit Switch
I2C
SPI GPIO Expanders
CPU Interface
No. of GPIOs
Interrupt Output
Pin
XRA1402
SPI
8



1.65V - 3.6V
XRA1403
SPI
16



1.65V - 3.6V
XRA1404
SPI
8



1.65V - 3.6V
XRA1405
SPI
16



1.65V - 3.6V
Name
12
Reset Input
Integrated
Internal Pull-Up Resistors
Pin
Level Shifters
Enabled at Power-up
Packages
QFN-16
TSSOP-16
QFN-24
TSSOP-24
QFN-16
TSSOP-16
QFN-24
TSSOP-24
CONNECTIVIT Y → SERIAL TRANSCEIVERS
Exar offers a complete portfolio of RS-232, RS-485, RS-422 and Multiprotocol transceivers with data rates up to 52Mbps. Exar is the market
leader in high-speed RS-485/RS-422 and Multiprotocol transceivers. In addition, Exar offers a broad family of feature-rich RS-232 serial
transceivers.
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 Human Body Model
• ± 8kV using the Contact Discharge method specified in IEC 61000-4-2
• ±15kV using the Air-Gap Discharge method specified in IEC 61000-4-2
Key Features and Technologies
Pin-to-Pin Compatibility
Exar’s RS-232 and RS-485/422 transceivers are offered in industry
standard packages and pinouts. Therefore, migrating to faster RS232 or RS-485/422 transceivers with additional features can be
accomplished with minimal changes to the design.
Internal Termination
The SP338E and SP339E dual protocol transceivers offer internal
cable termination in RS-485/422 modes. The SP3508, SP508E and
SP510E also offer internal V.11 and V.35 termination networks for
the clock and data lines. Eliminating the external termination greatly
simplifies the system design, resulting in reduced board space and
quicker time to market.
Hot Swap / Power-Up Glitch Protection
This feature prevents random data errors from appearing on the RS485/422 differential pairs due to undefined logic levels during powerup that improperly enable the transceivers.
Auto On-Line® Feature
Auto On-Line saves power by turning off the charge pumps and driver
outputs when the RS-232 inputs see less than valid +/-3V signals (ie.
cable is unplugged). The RS-232 transceiver will automatically wake
up from the low power state when a valid RS-232 voltage is sensed at
the receiver input.
Auto On-Line® Plus Feature
Similar to above, Auto On-Line Plus saves power by turning off the
charge pumps and driver outputs if there are no transitions on the
driver or receiver inputs for 30 seconds. The transceiver returns to
normal operation with a transition on any of the driver or receiver
inputs.
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 RS-232
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 design uses a unique approach compared to
older less efficient designs.
1/8th Unit Load
A standard RS-485/422 driver can drive up to 32 unit loads. The
1/8th unit load receiver input impedance allows eight times as many
transceivers (up to 256) to be connected in parallel on a communication Industry’s ONLY Single Chip Solutions
line.
Exar is the only one in the industry to offer single chip solutions that
support RS-232, RS-485, RS-449, EIA-530, V.10, V.11, V.28, V.35,
Enhanced Receiver Failsafe
V.36, and X.21. As a result, Exar’s solution takes up to 40% less board
The Enhanced Receiver Failsafe feature ensures that the TTL space than competitor solutions.
outputs are in a known state when the RS-485/422 differential pairs
are floating, shorted, or terminated but idle, without the need for any NET1/2 and TBR2 Compliance
external biasing resistors.
SP3508, SP505, SP506, SP507, and SP508E are compliant to NET1/2
and TBR2 requirements.
PROFIBUS
PROFIBUS is widely used in industrial control and automation Slew Rate Limited Options
applications and is ruggedized for use in harsh operating conditions. Slew limited drivers minimize EMI (Electromagnetic Interference)
Exar’s products are PROFIBUS compliant and feature high differential and reduce reflections caused by improperly terminated cables. This
output swing for improved noise immunity or to drive longer data allows for error-free data transmission over longer communication
cables.
lines.
13
CONNECTIVIT Y → SERIAL TRANSCEIVERS → Multiprotocol Transceivers
Exar offers the industry’s only single chip multiprotocol solutions and the fastest data rates, up to 52 Mbps. Multiprotocol transceivers support
the popular serial protocols - V.10, V.11, V.28 (RS-232), V.35, V.36 (RS-449), EIA-530, EIA-530-A, and X.21. Advanced features like built-in
cable termination, adjustable logic level, diagnostic loopback modes, and 15kV ESD protection provide maximum versatility and robust serial
communication.
Dual Protocol Transceivers (RS-232 + RS-485/422)
Name
232 TX / RX 485 TX / RX
Max Data
Rate
ESD ±15kV
HBM
ESD ±8kV
Contact
120Ω
Termination
Fault
Tolerance
485 Duplex
Slew Limit
Pin
VL Pin
Supply Voltage
Range
Package

±18V
Half/Full


3V - 5.5V
QFN-32

3V - 5.5V
TSSOP-28
WSOIC-28
3V - 5.5V
TSSOP-28
WSOIC-28
SP335E
2/2
1/1
20 Mbps


SP336E
4/4
2/2
10 Mbps


Half/Full
SP337E
3/5
2/2
15 Mbps


Full
SP338E
3/5
2/4
20 Mbps



±18V
Half/Full

3V - 5.5V
QFN-40
SP339E
3/5
1/1
20 Mbps



±18V
Half/Full

3V - 5.5V
QFN-40
XR3160E
2/2
1/1
20 Mbps


±18V
Half/Full

3V - 5.5V
SSOP-20
Supply Voltage
Range
Packages
3V-3.6V
LQFP-100

4.75V-5.25V
LQFP-80
Single-Chip Dual Protocol Transceivers
Multi Protocol Transceivers
2
SP504
7
7
10
2
SP507
7
7
20
SP508E
8
8
SP510E
8
8
14
X.21
5
V.36
7

V.35
7

V.28
SP503

V.11
2
V.10
20
EIA-530A
8
EIA-530
8
RS-449
Complete
SP3508
RS-422
Drivers
Internal
Termination
RS-485
Name
ESD
(kV)
RS-232
Supported Protocols
Data
Receivers Rate
(Mbps)










VL
Pin





Basic












4.75V-5.25V
LQFP-80
2
V.35, V.11










4.75V-5.25V
LQFP-80
20
15
Complete










4.75V-5.25V
LQFP-100
52
15
Complete










4.75V-5.25V
LQFP-100

CONNECTIVIT Y → SERIAL TRANSCEIVERS → RS - 485/422 Transceivers
Exar has a diverse portfolio of RS-485/422 serial transceivers. Products range from industry standard transceivers to ultra high speed, 52Mbps
and high differential output transceivers. In addition, Exar has RS-485/422 transceivers that are compliant to popular field buses including
PROFIBUS. Advanced features like hotswap, enhanced failsafe, and 15kV ESD protection ensure reliable and robust data communication
over long cable lengths.
Wide Supply RS-485 Transceivers
Name
Drivers Receivers Duplex
Data Rate
(Mbps)
ESD
(kV)
Rx Fail-Safe
Shutdown
Multi-Drop
Nodes
Hot
Swap
Transient
Tolerance
Fault
Tolerance
VCC Range
Packages
XR33032
1
1
Half
0.25
15
Open, Short, Idle

256

±70V
±18V
2.8V - 5.5V
NSOIC-8
XR33035
1
1
Half
1
15
Open, Short, Idle

256

±70V
±18V
2.8V - 5.5V
NSOIC-8
XR33038
1
1
Half
10
15
Open, Short, Idle

256

±70V
±18V
2.8V - 5.5V
NSOIC-8
Data Rate
(Mbps)
ESD
(kV)
Rx
Fail-Safe
Shutdown
Multi-Drop
Nodes
Hot
Swap
Transient
Tolerance
Fault
Tolerance
High Output
Packages

256

3.3V RS-485/422 Transceivers
Name
Drivers Receivers Duplex
SP3070E
1
1
Full
0.25
15
Open, Short, Idle
NSOIC-14
SP3071E
1
1
Full
0.25
15
Open, Short, Idle
SP3072E
1
1
Half
0.25
15
Open, Short, Idle

256

NSOIC-8
SP3073E
1
1
Full
0.5
15
Open, Short, Idle

256

NSOIC-14
SP3074E
1
1
Full
0.5
15
Open, Short, Idle
SP3075E
1
1
Half
0.5
15
Open, Short, Idle

256

NSOIC-8
SP3076E
1
1
Full
16
15
Open, Short, Idle

256

NSOIC-14
SP3077E
1
1
Full
16
15
Open, Short, Idle
SP3078E
1
1
Half
16
15
Open, Short, Idle

256

XR3070X
1
1
Full
0.25
15
Open, Short, Idle

256

XR3071X
1
1
Full
0.25
15
Open, Short, Idle
XR3072X
1
1
Half
0.25
15
Open, Short, Idle

256
XR3073X
1
1
Full
1
15
Open, Short, Idle

256
XR3074X
1
1
Full
1
15
Open, Short, Idle
XR3075X
1
1
Half
1
15
Open, Short, Idle

256
XR3076X
1
1
Full
20
15
Open, Short, Idle

256
XR3077X
1
1
Full
20
15
Open, Short, Idle
XR3078X
1
1
Half
20
15
Open, Short, Idle

256
SP3495E
1
1
Half
32
15
Open, Short, Idle

64
NSOIC-8
SP3496E
1
1
Full
32
15
Open, Short, Idle
64
NSOIC-8
SP3497E
1
1
Full
32
15
Open, Short, Idle
64
NSOIC-14
256
NSOIC-8
256
NSOIC-8
256
NSOIC-8
±70V
±18V

NSOIC-14
±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-14
±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-14
±70V
±18V

NSOIC-8
±70V
±18V

NSOIC-8
256
256
256

NSOIC-8

15
5.0V RS-485/422 Transceivers
Name
Drivers Receivers Duplex
Data Rate
(Mbps)
ESD
(kV)
Rx
Fail-Safe
Shutdown
Multi-Drop
Nodes
Hot
Swap
Transient
Tolerance
Fault
Tolerance
PROFIBUS
Packages
SP481E
1
1
Half
10
15
Open

32
NSOIC-8
SP483E
1
1
Half
0.25
15
Open

32
NSOIC-8
SP485E
1
1
Half
10
15
Open
32
NSOIC-8
SP485R
1
1
Half
1
2
Open
400
NSOIC-8
SP490E
1
1
Full
10
15
Open
32
NSOIC-8
SP491E
1
1
Full
10
15
Open

32
NSOIC-14
SP3080E
1
1
Full
0.25
15
Open, Short, Idle

256
SP3081E
1
1
Full
0.25
15
Open, Short, Idle
SP3082E
1
1
Half
0.25
15
Open, Short, Idle

256
SP3083E
1
1
Full
1
15
Open, Short, Idle

256
SP3084E
1
1
Full
15
15
Open, Short, Idle
SP3085E
1
1
Half
1
15
Open, Short, Idle

256
SP3086E
1
1
Full
20
15
Open, Short, Idle

256
SP3087E
1
1
Full
20
15
Open, Short, Idle
SP3088E
1
1
Half
20
15
Open, Short, Idle

256
XR3080X
1
1
Full
0.25
15
Open, Short, Idle

256
XR3081X
1
1
Full
0.25
15
Open, Short, Idle
XR3082X
1
1
Half
0.25
15
Open, Short, Idle

256
XR3083X
1
1
Full
1
15
Open, Short, Idle

256
XR3084X
1
1
Full
1
15
Open, Short, Idle
XR3085X
1
1
Half
1
15
Open, Short, Idle

256
XR3086X
1
1
Full
20
15
Open, Short, Idle

256
XR3087X
1
1
Full
20
15
Open, Short, Idle
XR3088X
1
1
Half
20
15
Open, Short, Idle

256
XR5486E
1
1
Full
52
15
Open, Short, Idle

256
XR5487E
1
1
Full
52
15
Open, Short, Idle
XR5488E
1
1
Half
52
15
Open, Short, Idle
16
±65V
NSOIC-14
±65V
NSOIC-8

±65V
NSOIC-8

±65V
NSOIC-14
±65V
NSOIC-8

±65V
NSOIC-8

±65V
NSOIC-14
±65V
NSOIC-8

±65V
NSOIC-8

±70V
±18V

NSOIC-14
±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-14
±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-14
±70V
±18V

NSOIC-8

±70V
±18V

NSOIC-8

±65V

NSOIC-14
±65V

NSOIC-8
±65V

NSOIC-8

256
256
256
256
256
256
256

256

CONNECTIVIT Y → SERIAL TRANSCEIVERS → RS -232 Transceivers
Exar offers a large portfolio of the RS-232 serial transceivers with more than 40 product offerings. The family consists of traditional RS232 transceivers to the more advanced RS-232 transceivers with Auto On-line Plus features. In addition, many of the RS-232 transceivers
have enhanced ESD protection. Exar offers new RS-232 products that meet rigid IEC 61000-4-2 Air-Gap and Contact ESD standards. This
protection makes the product immune to damage from ESD strikes. Many of the devices are drop-in replacements and functional equivalents
to existing industry standard solutions.
RS-232 Transceivers
Drivers
Receivers
Data Rate
(kbps)
ESD (kV)
Supply Voltage
Range
Packages
SP202E
2
2
120
15
4.5V-5.5V
NSOIC-16
WSOIC-16
SP206
4
3
120
10
4.5V-5.5V
SSOP-24
WSOIC-24
SP207E
5
3
120
15
4.5V-5.5V
SSOP-24
SP208E
4
4
120
15
4.5V-5.5V
SSOP-24
WSOIC-24
SP211E
4
5
120
15


4.5V-5.5V
SSOP-28
WSOIC-28
SP211EH
4
5
460
15


4.5V-5.5V
SSOP-28
WSOIC-28
SP213E
4
5
120
15


4.5V-5.5V
SSOP-28
SP213EH
4
5
460
15


4.5V-5.5V
SSOP-28
SP2209E
6
10
460
15
10.8V-13.2V
3.125V-5.5V
TSSOP-38
SP232E
2
2
120
15
4.5V-5.5V
NSOIC-16
WSOIC-16
SP233E
2
2
120
15
4.5V-5.5V
WSOIC-20
SP238A
4
4
20
2
4.5V-5.5V
WSOIC-24
SP310E
2
2
120
15

4.5V-5.5V
WSOIC-18
SP312E
2
2
120
15

4.5V-5.5V
WSOIC-18
SP3203E
3
2
250
15

3V-5.5V
TSSOP-20
SP3220E
1
1
120
15


3V-5.5V
SSOP-16
TSSOP-16
SP3220EB
1
1
250
15


3V-5.5V
SSOP-16
TSSOP-16
SP3220EU
1
1
1000
15


3V-5.5V
SSOP-16
TSSOP-16
SP3221E
1
1
250
15


3V-5.5V
TSSOP-16
SP3222E
2
2
120
15


3V-5.5V
SSOP-20
WSOIC-18
TSSOP-20
Name
Shutdown

TTL Tri-state
Auto On-Line



Auto On-Line
Plus
17
RS-232 Transceivers
Drivers
Receivers
Data Rate
(kbps)
ESD (kV)
Shutdown
TTL Tri-state
Supply Voltage
Range
Packages
SP3222EB
2
2
250
15


3V-5.5V
SSOP-20
WSOIC-18
TSSOP-20
SP3222EU
2
2
1000
15


3V-5.5V
SSOP-20
WSOIC-18
TSSOP-20
SP3223E
2
2
120
15



3V-5.5V
SSOP-20
TSSOP-20
SP3223EB
2
2
250
15



3V-5.5V
SSOP-20
TSSOP-20
SP3223EU
2
2
1000
15



3V-5.5V
SSOP-20
TSSOP-20
SP3224E
2
2
250
15



3V-5.5V
SSOP-20
TSSOP-20
SP3225E
2
2
1000
15



3V-5.5V
SSOP-20
TSSOP-20
SP3226E
1
1
250
15


3V-5.5V
SSOP-16
TSSOP-16
SP3227E
1
1
1000
15


3V-5.5V
SSOP-16
TSSOP-16
SP3232E
2
2
120
15
3V-5.5V
SSOP-16
TSSOP-16
NSOIC-16
WSOIC-16
SP3232EB
2
2
250
15
3V-5.5V
SSOP-16
TSSOP-16
NSOIC-16
WSOIC-16
SP3232EH
2
2
460
15
3V-5.5V
TSSOP-16
SP3232EU
2
2
1000
15
3V-5.5V
SSOP-16
TSSOP-16
NSOIC-16
WSOIC-16
SP3238E
5
3
250
15

3V-5.5V
SSOP-28
TSSOP-28
SP3239E
5
3
250
15

3V-5.5V
SSOP-28
SP3243E
3
5
120
15


3V-5.5V
SSOP-28
TSSOP-28
SP3243EB
3
5
250
15


3V-5.5V
QFN-32
SSOP-28
WSOIC-28
TSSOP-28
SP3243EH
3
5
460
15


3V-5.5V
SSOP-28
WSOIC-28
SP3243EU
3
5
1000
15


3V-5.5V
QFN-32
SSOP-28
WSOIC-28
TSSOP-28
SP3244E
3
5
250
15


3V-5.5V
QFN-32
SSOP-28
TSSOP-28
SP3245E
3
5
1000
15


3V-5.5V
QFN-32
SSOP-28
TSSOP-28
SP3249E
5
3
250
15
3V-5.5V
TSSOP-24
SP385E
2
2
120
15
3.3V or 5V
SSOP-20
WSOIC-18
Name
18
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LIFE SUPPORT POLICY
EXAR Corporation does not recommend the use of its products in life support applications where the failure or malfunction of the
product can reasonably be expected to cause failure of a life support system or to significantly affect its safety or effectiveness. Life
support devices or systems are devices or systems which are intended for surgical implant into the body, or support or sustain life, and
where failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably
expected to result in death or significant injury to the user. Products are not authorized for use in such applications unless EXAR
Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user
assumes all such risks; (c) potential liability and indemnity of EXAR Corporation is adequately protected under the circumstances.
PATENT INFORMATION
Exar Corporation’s products are protected under one or more of the following U.S. Patents:
3,306,444, 3,883,889, 4,042,953, 4,152,823, 4,247,951, 4,265,935, 4,318,118, 4,566,914, 4,617,535, 4,771,188, 4,789,838, 4,851,893,
4,866,397, 4,949,150, 4,975,386, 5,007,081, 5,011,784, 5,016,080, 5,023,194, 5,068,702, 5,097,309, 5,148,395, 5,152,842, 5,190,884,
5,229,664, 5,247,581, 5,248,624, 5,283,579, 5,294,927, 5,298,814, 5,315,264, 5,319,704, 5,325,045, 5,325,069, 5,357,379, 5,371,419,
5,387,877, 5,389,829, 5,440,254, 5,444,242, 5,446,412, 5,452,711, 5,502,746, 5,506,532, 5,512,816, 5,552,732, 5,557,481, 5,570,049,
5,572,212, 5,587,684, 5,592,167, 5,604,452, 5,625,281, 5,648,972, 5,650,747, 5,689,259, 5,694,031, 5,698,970, 5,703,524, 5,708,536,
5,790,393, 5,796,361, 5,649,122, 5,801,587, 5,801,593, 5,805,005, 5,818,271, 5,528,330, 5,844,431, 5,852,360, 5,864,257, 5,870,002,
5,880,690, 5,880,632, 5,910,739, 5,914,627, 5,914,632, 5,923,203, 5,923,206, 5,929,799, 5,933,056, 5,949,787, 5,959,494, 6,031,389,
6,121,805, 6,121,837, 6,127,956, 6,300,820, 6,311,246, 6,313,671, 6,313,672, 6,323,703, 6,323,820, 6,326,820, 6,333,651, 6,340,944,
6,350,979, 6,351,165, 6,359,484, 6,404,927, 6,424,197, 6,424,510, 6,452,248, 6,452,425, 6,462,695, 6,501,320, 6,747,503, 6,754,839,
6,774,942, 6,798,857, 6,865,626, 6,947,999, 9,952,240, 6,960,942, 6,695,606, 7,000,158, 7,012,794, 7,038,720, 7,057,241
THERE ARE OTHER U.S. AND FOREIGN PATENTS PENDING.
E X A R C O R P O R AT I O N
REPRODUCTION, IN PART OR WHOLE, WITHOUT THE PRIOR WRITTEN CONSENT OF EXAR CORPORATION IS PROHIBITED.
48760 Kato Road
Fremont, CA 94538
U.S.A.
X R C O N B R O -1014
www.exar.com
E X A R I S A T R A D E M A R K O F E X A R C O R P O R AT I O N . A L L OT H E R T R A D E M A R K S A N D R E G I S T E R E D T R A D E M A R K S A R E
PROPERT Y OF THEIR RESPECTIVE OWNERS.
© 2 014 E X A R C O R P O R AT I O N
T. +1.510.668.7000
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