3-Channel Jitter Attenuator for DS3/E3/STS-1 WANs
OBS (Obsolete)
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Information 3-Channel Jitter Attenuator for DS3/E3/STS-1 WANs
Package TQFP-64
Temperature Range (°C) Ind.
# of Channels 3
Clk Rec No
Data Rate(s) DS3, E3, STS-1
Op Pwr Sup/Max Cur 3V, 5V, ±5%
SH/LH n/a
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Data transmission accuracy requires sending and receiving clean, error-free data. Jitter is caused by many factors including cross-talk noise, line interface/signal distortion, or even an imperfect timing recovery circuit. At every connection point (node) in a WAN environment, equipment and peripheral devices can cause new errors to be introduced into transmitted data. For precise data transmission, jitter must be reduced.

Exar has a full line of single, and multi-channel jitter attenuator solutions that match, or outperform, other methods, and are much easier to deploy at a lower cost. The XRT71D00, the industry's first jitter attenuator, is a fully integrated single-chip device for DS3/E3 applications. Complementing this device are the XRT71D03 (three-channel), and XRT73D04 (four-channel) parts, which like the XRT71D00, are designed to attenuate the jitter from the incoming clock and data signals. The parts are designed for seamless integration with EXAR's Line Interface Units (LIUs), and access control products enabling designers to implement a complete solution from a single source.

The XRT71D00, XRT71D03, and XRT71D04 meet the European Telecommunications Standards Institute (ETSI), technical committee draft standards TBR-24 for digital structured and unstructured leased lines. The Bellcore GR-499, and GR-253, require that terminal equipment, which derives its timing from the received signal at the input port, must not exceed specified output jitter levels. All three devices are compliant with the ANSI T1.105.03b 1997, and ITU G.751, G.752, G.755 standards.

  • Supports DS3/E3/STS-1 rates
  • Each channel can operate at different data rates
  • Selectable buffer size (16- or 32-bit)
  • Available in either a 64-pin (XRT71D03), or a 80-pin (XRT71D04) TQFP package
  • Single 3.3V or 5.0V supply
  • Operates over industrial temperature ranges
  • Pb-Free, RoHS Compliant Versions Offered

  • Frame Relay
  • E3/DS3/STS-1 Access Equipment
  • Add/Drop Multiplexers
  • ATM switches
  • DSLAMs
  • STS-1 to DS3 Mappers

Documentation & Design Tools

Type Title Version Date File Size
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
Simulation Models
Package Type Vcc Temp Mode Version File
TQFP 3.3V Industrial 5
TQFP 5V Industrial 2
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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
XRT71D03IV-F LQFP64 -40 85 OBS
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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.

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The -F suffix indicates ROHS / Green compliance: