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3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • 8 Complete E1, T1, or J1 Short-Haul Line Interface Units
  • Independent E1, T1, or J1 Selections
  • Internal Software-Selectable Transmit and Receive-Side Termination
  • Crystal-Less Jitter Attenuator
  • Selectable Single-Rail and Dual-Rail Mode and AMI or HDB3/B8ZS Line Encoding and Decoding
  • Detection and Generation of AIS
  • Digital/Analog Loss-of-Signal Detection as per T1.231, G.775, and ETS 300 233
  • External Master Clock can be Multiple of 2.048MHz or 1.544MHz for T1/J1 or E1 Operation; This Clock will be Internally Adapted for T1 or E1 Use
  • Built-In BERT Tester for Diagnostics
  • 8-Bit Parallel Interface Support for Intel or Motorola Mode or a 4-Wire Serial Interface
  • Hardware Mode Interface Support
  • Transmit Short-Circuit Protection
  • G.772 Nonintrusive Monitoring
  • Specification Compliance to the Latest T1 and E1 Standards—ANSI T1.102, AT&T Pub 62411, T1.231, T1.403, ITU-T G.703, G.742, G.775, G.823, ETS 300 166, and ETS 300 233
  • Single 3.3V Supply with 5V Tolerant I/O
  • JTAG Boundary Scan as per IEEE 1149.1
  • 144-Pin eLQFP Package

Applications/Uses

  • ATM and Frame Relay Equipment
  • E1/T1/J1 LAN/WAN Routers
  • E1/T1/J1 Multiplexer and Channel Banks
  • ISDN Primary Rate Interface
  • T1 Digital Cross-Connects
  • Wireless Base Stations

Description

The DS26303 is an 8-channel short-haul line interface unit (LIU) that supports E1/T1/J1 from a single 3.3V power supply. A wide variety of applications are supported through internal termination or external termination. A single bill of material can support E1/T1/J1 with minimum external components. Redundancy is supported through nonintrusive monitoring, optimal high-impedance modes, and configurable 1:1 or 1+1 backup enhancements. An on-chip synthesizer generates the E1/T1/J1 clock rates by a single master clock input of various frequencies. Two clock output references are also offered.

Simplified Block Diagram

DS26303: Functional Diagram DS26303: Functional Diagram Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.