DS21348G+

Telecom Overview

The DS21348G+ is a single-channel Line Interface Unit (LIU) designed for E1, T1, and J1 applications. It operates on a 3.3V power supply within an industrial temperature range of 0°C to +70°C. The device is housed in a 49-ball CSBGA package measuring 7mm x 7mm. It supports both long-haul and short-haul trunks with internal software-selectable receive-side termination for 75Ω, 100Ω, or 120Ω loads. A crystal-less jitter attenuator requires only a 2.048MHz master clock for E1 and T1, with an option for 1.544MHz in T1 systems.

Telecom Feature Summary

• Complete line interface unit supporting E1, T1, and J1 standards
• Crystal-less jitter attenuator requiring only a 2.048MHz master clock
• Internal software-selectable receive-side termination for various impedances
• Supports AMI, HDB3, and B8ZS encoding/decoding

Telecom Applications

• Short-haul trunk applications
• Long-haul trunk applications
• CEPT 30/ISDN-PRI lines for E1
• CSU or DSX-1 lines for T1

Telecom Procurement Notes

Verify the component against official Analog Devices documentation to confirm lead-free status and RoHS compliance. Ensure the specific ordering suffix matches the required temperature range and package type. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current availability status before procurement.

Telecom Selection Notes

Select this component for designs requiring a complete LIU solution for E1, T1, or J1 interfaces. Consider the 49-ball CSBGA package constraints and the 3.3V power supply requirement. Evaluate the need for internal termination versus external termination based on the specific impedance requirements of the application circuit.

Telecom Part Context

The DS21348G+ belongs to the DS21348 family of telecom interface ICs manufactured by Analog Devices Inc./Maxim Integrated. This series includes variants such as the DS21348TN and DS21Q348, offering different pin counts and channel configurations. The G+ suffix indicates a lead-free, RoHS-compliant version of the standard DS21348G device.

Telecom Replacement Considerations

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