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DS21448L The Analog Devices DS21448L is a quad-port E1/T1/J1 Line Interface Unit (LIU) designed for telecom applications. It operates at 3.3V and comes in a 128-LQFP package.
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DS21448L

Available from 1 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices DS21448L is a quad-port E1/T1/J1 Line Interface Unit (LIU) designed for telecom applications. It operates at 3.3V and comes in a 128-LQFP package.
✓ Total Stock: 10,762 pcs

DS21448L Available from 1 distributor

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✓ Non-Authorised
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Romaks Technologies ✓
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10,762 pcs
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DS21448L Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Function
Interface
Mounting Type
Number of Circuits
Operating Temperature
Supplier Device Package
Tape & Reel
Voltage
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DS21448L Description

Short technical summary and product information.

The Analog Devices DS21448L is a versatile quad-port E1, T1, or J1 Line Interface Unit (LIU) suitable for both short-haul and long-haul telecommunications applications. It integrates four independent transmitters and receivers within a compact 128-pin LQFP package.

 

This LIU supports a 3.3V power supply and offers internal software-selectable receive-side termination for 75Ω, 100Ω, and 120Ω impedances. Key features include a crystal-less jitter attenuator, support for AMI, HDB3, and B8ZS encoding/decoding, and programmable monitor modes. It also provides loopback capabilities, PRBS pattern generation/detection, and blue alarm detection.

 

The DS21448L meets numerous industry standards, including ITU G.703, G.704, and ANSI T1.408, making it suitable for applications such as integrated multiservice access platforms, T1/E1 cross-connects, multiplexers, channel banks, central-office switches, PBX interfaces, and T1/E1 LAN/WAN routers.

 

Packaged in a 128-LQFP for surface mounting, the DS21448L is designed for reliable integration into various telecom infrastructure.

DS21448L Quick Information

Product Type: Telecom Interface IC
Canonical Name: DS21448L Quad E1/T1/J1 Line Interface Unit (LIU)
Subcategory: Telecom

DS21448L Compliance

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

DS21448L Features

  • Four complete E1, T1, or J1 LIUs.
  • Supports long- and short-haul trunks.
  • Internal software-selectable receive termination.
  • 3.3V power supply operation.
  • 128-LQFP package for surface mounting.

DS21448L Applications

  • Used in multiservice access platforms.
  • Suitable for T1/E1 cross-connects.
  • Integrates into channel banks.
  • Supports central-office switch interfaces.
  • Applicable for T1/E1 LAN/WAN routers.

DS21448L FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage for the DS21448L?

The operating voltage is 3.3V.

What package type is the DS21448L available in?

The DS21448L is available in a 128-LQFP package.

What is the operating temperature range for the DS21448L?

The operating temperature range is 0°C to 70°C.

What is the RoHS status of the DS21448L?

The RoHS status is RoHS3 Compliant.

What are the key functions of the DS21448L?

The DS21448L provides four complete E1, T1, or J1 Line Interface Units (LIUs) supporting long- and short-haul trunks.

Does the DS21448L support different trunk types?

Yes, it supports both long- and short-haul trunks.

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