T1 Long Loop Stik

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Status Explanations for product status codes

Part Number Status Replacement Explanation
DS2291 This product is Not Recommended for New Designs. See Ordering Information for recommended replacements.DS26521
Please upgrade to the DS26521 for newer technology, smaller package, lower cost, and lower power consumption. 


The DS2291 T1 Long Loop Stik recovers clock and data from T1 lines varying in length from 0 to 6,000 feet. It also dejitters the recovered clock and data in compliance with AT&T TR 62411 (Accunet* T1.5 Service Description and Interface specification, December 1990).

Compared to other circuits performing T1 clock and data recovery, the DS2291 requires no tuning or additional circuitry. It is a companion to the DS229 T1 Isolation Stik and compatible with the DS2180A or DS2141A T1 Transceivers, for low-cost, low-power T1 interfacing.

Applications area include Channel Service Units (CSU), T1 monitoring equipment, and T1 test equipment.

Data Sheet

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Key Features

  • Recovers clock and data from T1 lines from 0 to 6,000 feet in length
  • +0 to -30dBSX receiver sensitivity
  • Built-in Automatic Line Build-Out (ALBO) circuitry requires no tuning or external components
  • Dejitters recovered clock and data
  • Meets TR 62411 (Dec. 1990) for jitter tolerance and attenuation
  • Companion to the DS2290 T1 Isolation Stik
  • Connects to a standard 30-pin single in-line connector
  • Compatible with the DS2180A or DS2141A T1 transceivers
  • Operating ranges:
    • Single +5V supply
    • 0°C to 70°C

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Rev 1; 1998-02-27
This page last modified: 2007-07-26