DS2148TN

Telecom Overview

The DS2148TN is a single-channel Line Interface Unit (LIU) designed for E1, T1, and J1 telecommunication applications. It operates on a 5V power supply within an industrial temperature range of -40°C to +85°C. The component utilizes a 44-pin Thin Quad Flat Package (TQFP). Key electrical parameters include a maximum operating voltage of 5.25V and a minimum of 4.75V. It supports internal software-selectable receive-side termination for 75Ω, 100Ω, or 120Ω loads.

Telecom Feature Summary

• Supports both long-haul and short-haul trunk configurations with programmable line build-outs.
• Integrates a crystal-less jitter attenuator requiring only a master clock input.
• Provides comprehensive diagnostic capabilities including loopbacks and PRBS generation.

Telecom Applications

• E1/T1/J1 Line Interface Units
• Long-haul and Short-haul Trunk Applications

Telecom Procurement Notes

Verify the specific suffix 'TN' against official documentation to confirm the -40°C to +85°C industrial temperature rating and 44-pin TQFP package type. Ensure compatibility with 5V logic levels and check for any lead-free compliance requirements associated with the ordering code.

Telecom Selection Notes

Select this component when a single-channel LIU is required for E1, T1, or J1 networks. It is suitable for designs needing integrated jitter attenuation without external crystals. Verify that the host system can provide the necessary 2.048MHz master clock and supports the desired bus interface mode.

Telecom Part Context

This device belongs to the DS2148/DS21Q48 family of telecom interface ICs manufactured by Analog Devices Inc./Maxim Integrated. The DS2148 represents the single-channel variant, while the DS21Q48 offers four channels in a larger package. Both share similar functional architectures for line interfacing.

Telecom Replacement Considerations

The DS2148T+ serves as a lead-free/RoHS-compliant alternative within the same series. It maintains identical functionality but may differ in environmental compliance status. Verify pinout and thermal characteristics before substitution.