DS2154L+

Drivers, Receivers, Transceivers Overview

The DS2154L+ is an enhanced single-chip transceiver designed for E1 (CEPT) PCM-30 and ISDN-PRI applications. It integrates complete line interface, clock/data recovery, waveshaping, and framing functions within a 100-pin LQFP package. The device operates on a 5V supply with a specified operating temperature range of 0°C to +70°C. It supports both 120Ω twisted-pair and 75Ω coaxial line interfaces, featuring selectable line build-outs. Key internal components include a crystal-less jitter attenuator, dual elastic stores for asynchronous backplane connections up to 8.192MHz, and an 8-bit parallel control port compatible with Intel or Motorola buses.

Drivers, Receivers, Transceivers Feature Summary

• Integrates complete E1 transceiver functionality including AMI/HDB3 waveform conversion and G.703 waveshape generation.
• Features a crystal-less jitter attenuator with selectable 32-bit or 128-bit attenuation depths.
• Includes dual independent elastic stores to handle phase differences between recovered data and asynchronous backplane clocks.
• Provides hardware-based signaling extraction and insertion capabilities alongside comprehensive alarm detection.

Drivers, Receivers, Transceivers Applications

• E1 Line Interface Units (LIUs) for telecommunications networks
• ISDN Primary Rate Interface (PRI) terminal equipment
• Fractional E1 multiplexing systems
• Digital cross-connect systems requiring E1 termination

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix designation when ordering, as it determines the commercial or industrial temperature rating. Confirm RoHS compliance status based on the '+' suffix presence. Check current product lifecycle status, as this component may be subject to obsolescence notices. Ensure the required package variant matches the design-in footprint specifications.

Drivers, Receivers, Transceivers Selection Notes

Select the DS2154L+ for standard commercial temperature environments ranging from 0°C to +70°C. For industrial temperature requirements spanning -40°C to +85°C, consider the DS2154LN+ variant instead. Verify that the system architecture supports the 100-pin LQFP package dimensions. Ensure the host controller can interface with the 8-bit parallel control port or serial alternatives if bus constraints exist.

Drivers, Receivers, Transceivers Part Context

The DS2154 serves as an enhanced successor to the DS2153, adding features such as nonmultiplexed bus operation and per-channel loopback. It maintains pin compatibility with the DS2152 T1 transceiver family, facilitating migration between standards. The device consolidates multiple discrete components into a single chip to reduce board space and power consumption in E1 network infrastructure.

Drivers, Receivers, Transceivers Replacement Considerations

The DS2154LN+ is a direct replacement offering extended industrial temperature coverage (-40°C to +85°C). The DS2153 is a legacy predecessor with fewer features but similar core functionality. Cross-reference with DS2152 variants only if T1/E1 interoperability is required, noting potential functional differences in signaling support.