DS2188SN/TRL

Specialized ICS Overview

The DS2188SN/TRL is a T1/CEPT jitter attenuator integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It utilizes a 128 x 2-bit buffer and an external crystal to attenuate clock and data jitter in compliance with TR62411, G.735, and G.742 standards. The device operates on a single +5V supply and accepts a 1.544 MHz or 2.048 MHz input clock. It provides selectable buffer depths of 128 bits (handling up to 120 UIpp jitter) or 32 bits (handling up to 28 UIpp). The component is housed in a 16-SOIC package.

Specialized ICS Feature Summary

• Attenuates jitter present in T1 or CEPT lines meeting TR62411, G.735, and G.742 templates
• Requires only one external crystal: 6.176 MHz for T1 or 8.192 MHz for CEPT
• Selectable buffer depth via BDS pin: 128 bits or 32 bits
• Jitter attenuation function can be disabled by tying the DJA pin high

Specialized ICS Applications

• T1 line interface systems
• CEPT/E1 line interface systems
• Digital cross-connect systems

Specialized ICS Procurement Notes

Verify that the DS2188SN/TRL variant corresponds to the industrial temperature range (-40°C to +85°C) as specified in the ordering information table. Confirm the package type matches the 16-SOIC form factor. Note that this product status is listed as obsolete in distributor records.

Specialized ICS Selection Notes

Select the 128-bit buffer configuration for maximum jitter absorption capability up to 120 UIpp. Use the 32-bit buffer setting if system throughput delay is critical or if integrating into existing designs with limited buffer space. Ensure the external crystal tolerance is within ±50 ppm over the operating temperature range.

Specialized ICS Part Context

The DS2188SN/TRL is part of the DS2188 family of jitter attenuators. It serves as a companion component to the DS2186 Transmit Line Interface and DS2187 Receive Line Interface. It is also compatible with the DS2180A T1/ISDN Primary Rate Transceiver and the DS2181A CEPT Transceiver.

Specialized ICS Replacement Considerations

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