DS2148G+

Telecom Overview

The DS2148G+ is a single-channel Line Interface Unit (LIU) designed for E1, T1, and J1 telecommunication applications. It operates on a 5V power supply within a voltage range of 4.75V to 5.25V. The device is housed in a 49-ball CSBGA package measuring 7mm x 7mm. It supports an operating temperature range from 0°C to +70°C. The component integrates a crystal-less jitter attenuator requiring only a 2.048MHz master clock, with optional support for 1.544MHz in T1 configurations.

Telecom Feature Summary

• Complete line interface unit supporting E1, T1, and J1 standards for both short- and long-haul trunks
• Internal software-selectable receive-side termination for 75Ω, 100Ω, and 120Ω applications
• Crystal-less jitter attenuator with selectable FIFO depths for transmit or receive paths
• Programmable monitor mode with loopback capabilities and PRBS pattern generation/detection

Telecom Applications

• E1/T1/J1 Line Interface Units (LIUs)
• Short-haul and long-haul trunk connections
• CEPT 30/ISDN-PRI lines for E1 applications
• DSX-1 and CSU line build-outs for T1 applications

Telecom Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm lead-free status and RoHS compliance. Confirm the package type matches the required pin count and dimensions. Check for any known errata associated with the specific revision being procured. Ensure the host system provides the necessary 5V power supply and master clock frequencies as specified in the datasheet.

Telecom Selection Notes

Select the DS2148G+ when a single-channel LIU solution is required for E1, T1, or J1 networks. Choose this part over the quad-channel variant if only one channel is needed. Verify that the application environment stays within the commercial temperature range of 0°C to +70°C. Ensure the design accommodates the 49-ball CSBGA package constraints and soldering requirements.

Telecom Part Context

The DS2148G+ belongs to the DS2148/DS21Q48 family of telecom interface ICs manufactured by Analog Devices Inc./Maxim Integrated. The 'G+' designation indicates a lead-free/RoHS-compliant version packaged in a 49-ball CSBGA format. This family includes variants such as the DS2148T+ in a TQFP package and the DS21Q48 series for quad-channel applications.

Telecom Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.