Single-Channel T1/E1/J1 SH Transceiver with JA & CDR
OBS (Obsolete)
Order Now


Information Single-Channel T1/E1/J1 SH Transceiver with JA & CDR
Package TQFP-64
Temperature Range (°C) Ind.
# of Channels 1
Clk Rec Yes
Data Rate(s) T1/E1/J1
Op Pwr Sup/Max Cur 3.3V ±5%, TBD
Show more

Joining Exar's proven and extensive T1/E1 device family, the company adds three new products. A single-channel XRT83SL30, a quad (four-channel) XRT83SL34, and octal (eight-channel) XRT83SL38. These devices are ideal for the high bandwidth needs from the backbone or Core to the Metro Area Network. OEM products for this technology include Multi-Service Provisioning Platforms (MSPP), access devices, media gateways, routers frame relay access devices, and wireless base stations.

What is R3 TechnologyTM?

Exar's R3 TechnologyTM (Reconfigurable, Relayless Redundancy) delivers key innovative features to customers designing T1/E1/J1 interface cards. The devices are Reconfigurable -- integrated termination supporting all common T1/E1/J1 line impedances (75-120 ohms) enabling customers to build boards with a single bill-of-materials. Exar's on-board reconfigurable clock synthesizer allows manufacturers to build hardware in advance and configure the product (in software) for the particular application or market at the time of shipment. Conventional approaches require fixed settings - T1, or E1, or J1, forcing customers to determine device settings before manufacturing, and carry all configurations in inventory even if they are not immediately required. Also, the series employs Relayless Redundancy eliminating the need for external relays for 1:1 and 1+1 applications by establishing a back-up channel that is brought on-line in event of failure.

Product Highlights

The devices support all international (North America, Europe, or Japan) line impedances at 75, 100, 110, and 120-ohms. The XRT83SL8X series has a frequency synthesizer that can take a number of different clocks and generate either a 1.544 MHz clock for T1/J1, or 2.048 MHz for E1. The devices meet, or exceed popular networking specifications ITU G.703, G.775, and ANSI T1.402. In addition, the devices support the Bellcore GR-499 core and ANSI T1.402. Also, they have a low jitter, on-chip frequency multiplier that provides the necessary clocks to the chip. The master clock that feeds the multiplier can be T1, E1, or lower rates that are frequently available on a board such as 8, 16, 56, 64, 128 and 256kHz.

Other features of the family include a parallel microprocessor bus supporting both synchronous and asynchronous microprocessor interfaces for Motorola, Intel and MIPS processors, a crystal-less jitter attenuator that can be switched into either the transmit or receive path, and a quasi random signal synthesizer/detector for support bit error rate testing.

  • On-Chip Frequency Multiplier
  • Programmable Transmit Pulse Generator
  • Supports Host or Hardware Modes
  • Compliant With Leading Industry Standards
  • Interfaces Seamlessly to Exar Framer Products
  • Pb-Free, RoHS Compliant Versions Offered

  • T1 Digital Cross-Connects (DSX-1)
  • ISDN Primary Rate Interface
  • CSU/DSU E1/T1/J1 Interface
  • T1/E1/J1 LAN/WAN Routers
  • Public switching Systems and PBX Interfaces
  • T1/E1/J1 Multiplexer and Channel Banks

Documentation & Design Tools

Type Title Version Date File Size
Application Notes TAN-058, DS-1/E1 GR-1089 Surge Protection 1.0.1 September 2006 69.4 KB
Application Notes TAN-059, DS-1/E1 Line Recovered Clock PLL Timing 1.0.0 July 2006 23.4 KB
Application Notes TAN-057, DS1/E1 Layout Recommendations 1.0.0 June 2006 30 KB
Application Notes TAN-067, R3 Technology For T/E Carrier Redundancy Applications 1.0.0 April 2004 203.4 KB
Application Notes TAN-053, Line Card Redundancy Design With the XRT83SL38 T1/E1 SH/LH LIU ICs 1.3.0 November 2003 158.1 KB
Application Notes TAN-056, High Impedance Drivers During Power Failure Using XRT83SL3X/L3X LIU 1.0.0 November 2003 75.1 KB
User Guides & Manuals Evaluation System User's Manual 1.0.0 November 2002 335.7 KB
Schematics & Design Files Schematic 1.0.0 January 2004 40.8 KB
Register for a myMxL account or Login to myMxL to view all Technical Documentation & Design Tools.

Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
XRT83SL30IV-F LQFP64 -40 85 OBS
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.


Pkg Code Details Quantities Dimensions PDF
  • JEDEC Reference: MO-026
  • MSL Pb-Free: L3 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 50.0ºC/W
  • Bulk Pack Style: Tray
  • Quantity per Bulk Pack: 160
  • Quantity per Reel: 1000
  • Quantity per Tube: n/a
  • Quantity per Tray: 160
  • Reel Size (Dia. x Width x Pitch): 330 x 24 x 16
  • Tape & Reel Unit Orientation: Quadrant 2
  • Dimensions: mm
  • Length: 10.00
  • Width: 10.00
  • Thickness: 1.60
  • Lead Pitch: 0.50


Distribution Date Description File
02/03/2022 Product Discontinuation Notice
07/26/2016 Product discontinuation notification. Discontinued.
12/05/2013 Addition of an alternate qualified assembly site, ASE Chung-Li (Taiwan) for assembly using copper or gold wire bonding. Material change and alternate assembly site.
10/03/2013 Addition of an alternate qualified assembly site, ASE Chung-Li (Taiwan). Material change and alternate assembly site.

FAQs & Support

Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.

Submit a Technical Support Question As a New Question

Visit the product page for the part you are interested in.  The part's status is listed in the Parts & Purchasing section.  You can also view Product Lifecycle and Obsolescence Information including PDNs (Product Discontinuation Notifications).
To visit a product page, type the part into the search window on the top of the MaxLinear website.
In this example, we searched for XRA1201.  Visit the product page by clicking the part number or visit the orderable parts list by clicking "Orderable Parts". 



The Parts & Purchasing section of the product page shows the Status of all orderable part numbers for that product.  Click Show obsolete parts, to see all EOL or OBS products.



Find the product page of the part that you want to get an evaluation board for and click on Parts & Purchasing. Example:


Find the icons under Buy Now or Order Samples:


Click on the Buy Now icon and see who has stock and click on the Buy button:


Alternatively, you can click on the Order Samples


If the icons are missing, then contact Customer Support.

The -F suffix indicates ROHS / Green compliance: