DS26519

16-Port T1/E1/J1 Transceiver

Industry's Highest Port Count Transceiver with the Lowest Power Consumption and Price


Description

The DS26519 is a single-chip 16-port framer and line interface unit (LIU) combination for T1, E1, and J1 applications. Each port is independently configurable, supporting both long-haul and short-haul lines. The DS26519 is nearly software compatible with the DS26528 and its derivatives.
DS26519: Functional Diagram DS26519: Functional Diagram Enlarge+

Key Features

  • 16 Complete T1, E1, or J1 Long-Haul/Short-Haul Transceivers (LIU Plus Framer)
  • Independent T1, E1, or J1 Selections for Each Transceiver
  • Software-Selectable Transmit- and Receive-Side Termination for 100Ω T1 Twisted Pair, 110Ω J1 Twisted Pair, 120Ω E1 Twisted Pair, and 75Ω E1 Coaxial Applications
  • Hitless Protection Switching
  • Crystal-Less Jitter Attenuators Can Be Selected for Transmit or Receive Path; Jitter Attenuator Meets ETS CTR 12/13, ITU-T G.736, G.742, G.823, and AT&T Pub 62411
  • External Master Clock Can Be Multiple of 2.048MHz or 1.544MHz for T1/J1 or E1 Operation; This Clock is Internally Adapted for T1 or E1 Usage in the Host Mode
  • Receive-Signal Level Indication from -2.5dB to -36dB in T1 Mode and -2.5dB to -44dB in E1 Mode in Approximate 2.5dB Increments
  • Transmit Open- and Short-Circuit Detection
  • LIU LOS in Accordance with G.775, ETS 300 233, and T1.231
  • Transmit Synchronizer
  • Flexible Signaling Extraction and Insertion Using Either the System Interface or Microprocessor Port
  • Alarm Detection and Insertion
  • T1 Framing Formats of D4, SLC-96, and ESF
  • J1 Support
  • E1 G.704 and CRC-4 Multiframe
  • T1-to-E1 Conversion

Applications/Uses

  • Channel Banks
  • Channel Service Units (CSUs)
  • Data Service Units (DSUs)
  • Muxes
  • Routers
  • Switches
  • T1/E1 Test Equipment

Technical Documents

App Note 561 Tech Brief 7: DS2152 and DS2154 8MHz System Clock Operation
App Note 309 Interfacing to the Fractional T1 and E1
App Note 301 Legacy T1/E1 8MHz Backplane Operation

Quality and Environmental Data

Product Reliability Reports: DS26519.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

DS26519 BSDL Model
DS26519 IBIS Model

 

Related Resources