Overview
| # of Channels | 3 |
|---|---|
| Data Rate(s) | DS3, E3, STS-1 |
| Clk Rec | Yes |
| SH/LH | n/a |
| Temperature Range (°C) | Ind. |
| Op Pwr Sup/Max Cur | 3V |
| Package | TQFP-120 |
The XRT73L03B, 3-Channel, DS3/E3/STS-1 Line Interface Unit is a low power CMOS version of the XRT73L03A and consists of three independent line transmitters and receivers integrated on a single chip designed for DS3, E3 or SONET STS-1 applications. Each channel of the XRT73L03B can be configured to support the E3 (34.368 Mbps), DS3 (44.736 Mbps) or the SONET STS-1 (51.84 Mbps) rates. Each channel can be configured to operate in a mode/data rate that is independent of the other channels. In the transmit direction, each channel encodes input data to either B3ZS (DS3/STS-1) or HDB3 (E3) format and converts the data into the appropriate pulse shapes for transmission over coaxial cable via a 1:1 transformer.
In the receive direction, the XRT73L03B performs equalization on incoming signals, performs Clock Recovery, decodes data from either B3ZS or HDB3 format, converts the receive data into TTL/CMOS format, checks for LOS or LOL conditions and detects and declares the occurrence of Line Code Violations.
- Incorporates an improved Timing Recovery circuit and is pin and functional compatible to XRT73L03A
- Meets E3/DS3/STS-1 Jitter Tolerance Requirements
- Contains a 4-Wire Microprocessor Serial Interface
- Full Loop-Back Capability
- Transmit and Receive Power Down Modes
- Full Redundancy Support
- Uses Minimum External components
- Single +3.3V Power Supply
- Low power CMOS design
- 5V tolerant I/O
- -40°C to +85°C Operating Temperature Range
- Available in a 120 pin LQFP package
- Pb-Free, RoHS Compliant Versions Offered
- Digital Cross Connect Systems
- CSU/DSU Equipment
- Routers
- Fiber Optic Terminals
- Multiplexers
- ATM Switches
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | XRT73L03B 3 Channel DS3/E3/STS-1 Line Interface Unit | 1.0.1 | October 2003 | 720 KB |
| Application Notes | TAN-200, MaxLinear APIs - OS Portability | 1.0.0 | August 2007 | 88.5 KB |
| Application Notes | TAN-075, DS-3/E3 LIU Layout Recommendations | 1.0.0 | February 2007 | 29.8 KB |
| Application Notes | TAN-025, Interfacing the Microprocessor Serial Interface of the XRT730X Family of DS3/E3/STS-1 LIU Devices to the SPI Port of the MC68360 QUICC Device | 1.3 | July 2004 | 16 KB |
| Schematics & Design Files | Schematic | 1.0.0 | January 2004 | 120.8 KB |
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
|---|---|---|---|---|---|---|
| XRT73L03BIV | OBS | |||||
| XRT73L03BIV-F | TQFP120 | -40 | 85 | OBS |
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.
Notifications
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 XR33180. 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.
