DS2155LC2+

Telecom Overview

The DS2155LC2+ is a software-selectable T1, E1, or J1 single-chip transceiver (SCT) manufactured by Analog Devices Inc./Maxim Integrated. It integrates a line interface unit (LIU), framer, HDLC controllers, and a TDM backplane interface controlled via an 8-bit parallel port. The device operates on a 3.3V supply with a voltage range of 3.14V to 3.47V and supports data rates up to 64 kb/s per channel. It features a 100-LQFP package and functions within a commercial temperature range of 0°C to +70°C.

Telecom Feature Summary

• Supports complete T1/DS1/ISDN-PRI/J1 and E1 (CEPT) PCM-30/ISDN-PRI transceiver functionality
• Includes dual HDLC controllers and programmable BERT generator/detector for testing
• Features crystal-less jitter attenuator and internal software-selectable termination resistors
• Provides dual two-frame elastic-store slip buffers for asynchronous backplane connections

Telecom Applications

• T1/E1/J1 Line Cards
• Switches and Routers
• Add-Drop Multiplexers

Telecom Procurement Notes

Verify the specific suffix LC2 against official documentation to confirm pinout and package dimensions match design requirements. Confirm lead-free status and RoHS compliance through manufacturer certificates before integration. Check current availability as this component may be subject to discontinuation notices.

Telecom Selection Notes

Select the DS2155LC2+ when a 100-pin LQFP package is required for short-haul or long-haul applications. Ensure the system utilizes an 8-bit parallel control bus compatible with Intel or Motorola modes. Verify that the operating environment remains within the specified commercial temperature limits.

Telecom Part Context

This component belongs to the DS2155 family of single-chip transceivers designed for telecom interfaces. It is pin and software compatible with the DS2156 model. The device serves as a core interface solution for digital carrier networks, consolidating multiple transmission functions into a single integrated circuit.

Telecom Replacement Considerations

The DS2155 is pin and software compatible with the DS2156. Verify if alternative packages such as the CSBGA variant are suitable for the target PCB layout.