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DS21448LN+ The Analog Devices DS21448LN+ is a quad-port E1/T1/J1 Line Interface Unit (LIU) designed for short- and long-haul applications. It features a 128-LQFP package and operates over a wide temperature range.
Mfr Part #:

DS21448LN+

Available from 1 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices DS21448LN+ is a quad-port E1/T1/J1 Line Interface Unit (LIU) designed for short- and long-haul applications. It features a 128-LQFP package and operates over a wide temperature range.
✓ Total Stock: 535 pcs

DS21448LN+ Available from 1 distributor

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Romaks Technologies ✓
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535 pcs
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DS21448LN+ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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DS21448LN+ Description

Short technical summary and product information.

The Analog Devices DS21448LN+ is a versatile quad-port E1, T1, or J1 Line Interface Unit (LIU) suitable for both short-haul and long-haul telecommunications applications. This device integrates four independent transmitters and receivers within a compact 128-LQFP package.

 

Key electrical features include a 3.3V power supply, software-selectable receive-side termination for 75Ω/100Ω/120Ω, and a crystal-less jitter attenuator. It supports AMI, HDB3, and B8ZS encoding/decoding and generates appropriate line build-outs for E1 and T1 applications. The DS21448LN+ offers programmable monitor modes, loopbacks, and PRBS pattern generation/detection.

 

Designed for integration into systems like multiservice access platforms, T1/E1 cross-connects, multiplexers, channel banks, and WAN routers, this LIU operates reliably within a temperature range of -40°C to 85°C. The surface mount package facilitates integration into various PCB designs.

DS21448LN+ Quick Information

Product Type: Telecom IC
Canonical Name: DS21448LN+ Quad E1/T1/J1 Line Interface Unit (LIU)
Subcategory: Telecom

DS21448LN+ Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

DS21448LN+ Features

  • Quad E1, T1, or J1 LIUs integrated.
  • Supports long and short-haul trunks.
  • Software-selectable receive termination.
  • Crystal-less jitter attenuator included.
  • Operates at 3.3V power supply.

DS21448LN+ Applications

  • Used in multiservice access platforms.
  • Suitable for T1/E1 cross-connects.
  • Ideal for channel banks and multiplexers.
  • Applicable to T1/E1 LAN/WAN routers.
  • Designed for wireless base stations.

DS21448LN+ FAQs

5 frequently asked questions generated from this part’s specifications.
What type of line interface units does the DS21448LN+ provide?

The DS21448LN+ provides four complete E1, T1, or J1 LIUs.

What are the operating temperature limits for the DS21448LN+?

The operating temperature range for the DS21448LN+ is -40°C to 85°C.

What is the package type for the DS21448LN+?

The DS21448LN+ is available in a 128-LQFP package.

What is the operating voltage of the DS21448LN+?

The DS21448LN+ operates at a voltage range of 3.135V to 3.465V.

Does the DS21448LN+ support different encoding schemes?

Yes, it supports AMI, HDB3, and B8ZS encoding/decoding.

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