DS2155G

Telecom Overview

The DS2155G is a software-selectable T1, E1, or J1 single-chip transceiver designed for short-haul and long-haul applications. It integrates a line interface unit (LIU), framer, HDLC controllers, and a TDM backplane interface controlled by an 8-bit parallel port. The device operates within a supply voltage range of 3.14V to 3.47V and supports data rates up to 2.048Mb/s. It is housed in a 100-CSBGA package with dimensions of 10x10mm. The component functions as a complete transceiver for T1/DS1/ISDN-PRI/J1 and E1 (CEPT) PCM-30/ISDN-PRI protocols.

Telecom Feature Summary

• Complete T1/E1/J1 transceiver functionality with integrated LIU, framer, and HDLC controllers
• Software-selectable termination resistors for 75Ω, 100Ω, and 120Ω interfaces
• Dual HDLC controllers and programmable BERT generator/detector
• Crystal-less jitter attenuator with independent transmit and receive paths

Telecom Applications

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

Telecom Procurement Notes

Verify the specific revision status before procurement, as multiple revisions may be available through different sales channels. Check for known errata on the manufacturer's website. Confirm that the 100-CSBGA package matches your PCB footprint requirements. Ensure the operating temperature range meets your system specifications.

Telecom Selection Notes

Select this component when a single-chip solution for T1, E1, or J1 protocols is required. It is suitable for designs needing software-configurable line buildouts and jitter attenuation without external crystals. Consider the 100-CSBGA package size for space-constrained layouts. Verify compatibility with Intel or Motorola bus modes for the control interface.

Telecom Part Context

The DS2155G belongs to the DS2155 family of single-chip transceivers from Analog Devices/Maxim Integrated. It is pin and software compatible with the DS2156. The 'G' suffix indicates the 100-CSBGA package variant. Other variants include LQFP packages with different temperature ratings.

Telecom Replacement Considerations

The DS2156 is a pin and software compatible alternative within the same product family. Verify that the replacement part number matches the required package type and temperature range.