DS2182Q

Specialized Overview

The DS2182Q is a monolithic CMOS T1 line monitor chip designed to monitor real-time performance on T1 lines. It frames incoming data, counts errors, and provides detailed status information. The device supports Superframe (193S) and Extended Superframe (193E) formats. It features four onboard error counters: a 16-bit Bipolar Violation counter, an 8-bit CRC counter, an 8-bit Out-of-Frame (OOF) counter, and an 8-bit Frame Bit Error counter. The chip operates on a single 5V supply with low-power CMOS technology and includes a simple serial interface for configuration and control.

Specialized Feature Summary

• Performs framing and monitoring functions supporting both Superframe and Extended Superframe formats
• Includes four onboard error counters for bipolar violations, CRC, OOF, and frame bit errors
• Provides direct indication of yellow/blue alarms, B8ZS codewords, zero strings, and loss of sync
• Features a simple serial interface for host controller configuration, control, and status monitoring

Specialized Applications

• T1 line performance monitoring
• Telecommunications network maintenance
• Error detection in digital transmission systems

Specialized Procurement Notes

Verify the specific suffix Q indicates the 0°C to +70°C temperature range and 28-pin PLCC package as documented in the ordering information. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors, as legacy Maxim Integrated products may have varying environmental certifications depending on production batch.

Specialized Selection Notes

Select the DS2182Q when a 28-pin PLCC package is required for the design. Ensure the application environment stays within the 0°C to +70°C operating temperature range. For wider temperature requirements, consider the DS2182N or DS2182QN variants which support -40°C to +85°C. Verify that the system requires T1 monitoring capabilities compatible with ANSI T1.231 standards.

Specialized Part Context

The DS2182Q belongs to the DS2182A family of T1 line monitor chips from Analog Devices Inc./Maxim Integrated. This family is designed for monitoring real-time performance on T1 lines, providing framing, error counting, and alarm indication functions. The DS2182A revision includes updates such as excessive zeros counting and improved AIS/RCL detection compared to the original DS2182.

Specialized Replacement Considerations

The DS2182N serves as a pin-compatible replacement offering an extended temperature range of -40°C to +85°C in a 28-pin DIP package. The DS2182QN provides the same extended temperature range but in a 28-pin PLCC package, matching the physical form factor of the DS2182Q.