DS3112N+W

Telecom Overview

The DS3112N+W is a TEMPE (T3 E3 MultiPlexEr) integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates as an M13 or E13 multiplexer or as a standalone T3/E3 framer. The device supports multiple configurations, including M13 multiplexing of 28 T1 lines into a T3 stream, E13 multiplexing of 16 E1 lines into an E3 stream, and G.747 multiplexing of 21 E1 lines into a T3 stream. It features two T1/E1 drop and insert ports, B3ZS/HDB3 encoding/decoding, and integrated HDLC, FEAC, and BERT controllers. The component utilizes a 3.3V supply with 5V tolerant I/O and is housed in a 256-pin 1.27mm pitch PBGA package.

Telecom Feature Summary

• Supports flexible multiplexing modes for M13, E13, and G.747 standards
• Includes integrated HDLC controller for LAPD message handling without host intervention
• Provides comprehensive diagnostic capabilities including line, payload, and Tx-to-Rx loopbacks
• Features built-in Bit Error Rate Tester (BERT) and Far-End Alarm Channel (FEAC) controller

Telecom Applications

• Wide Area Network Access Equipment
• Digital Cross-Connect Systems
• Optical Multiplexers and ADMs
• PBXs and Access Concentrators

Telecom Procurement Notes

Verify the specific suffix 'N+' to confirm the extended temperature range of -40°C to +85°C and lead-free/RoHS compliance. Ensure the 256-pin PBGA footprint matches the target PCB design. Confirm that the 3.3V power supply requirements are met within the specified operating conditions before finalizing procurement.

Telecom Selection Notes

Select this component when designing systems requiring high-density T3/E3 multiplexing or framing functions. The DS3112N+W is suitable for applications needing integrated error monitoring via BERT and alarm generation. Consider the 256-pin package size and thermal management requirements associated with the PBGA form factor during the initial hardware architecture phase.

Telecom Part Context

The DS3112 belongs to the Maxim Integrated TEMPE family of telecommunications interface devices. This series provides solutions for hierarchical digital transmission equipment. The 'N' designation indicates the industrial temperature grade variant, while the '+' suffix denotes environmental compliance. It serves as a core processing unit for converting between lower-speed T1/E1 channels and higher-speed T3/E3 streams.

Telecom Replacement Considerations

Direct replacement options include the standard DS3112+ for commercial temperature ranges. Verify pin compatibility and software register maps if substituting with other TEMPE family members such as the DS3114 or DS3116, which may offer different channel counts.