DS33R41

Overview

The DS33R41 is an inverse-multiplexing Ethernet mapper with four integrated T1/E1/J1 transceivers. It encapsulates MAC frames in HDLC or X.86 (LAPS) for transmission over four interleaved T1/E1/J1 lines. The device supports a 10/100 IEEE 802.3 Ethernet MAC with MII and RMII interfaces, offering half/full duplex operation with automatic flow control. It provides Layer 1 inverse multiplexing through integrated framers and line interface units (LIUs), supporting up to 7.75ms differential delay. Power supplies are 1.8V and 3.3V. The component operates within a temperature range of -40°C to +85°C and is housed in a 400-pin BGA package.

Feature Summary

• Supports Layer 1 inverse multiplexing over four T1/E1/J1 lines via integrated framers and LIUs
• Includes a built-in committed information rate (CIR) controller for fractional bandwidth allocation
• Features programmable bit error rate testers (BERTs) for diagnostic purposes
• Provides external 16MB, 100MHz SDRAM buffering capability

Applications

• Bonded Transparent LAN Service
• LAN Extension
• Ethernet Delivery Over T1/E1/J1

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the exact temperature range and package configuration. Confirm current availability status as product lifecycles may change. Ensure that any substitute components maintain compatibility with the required 1.8V and 3.3V power supply specifications and the 400-pin BGA form factor.

Selection Notes

Select this component when designing systems requiring the aggregation of multiple T1, E1, or J1 circuits into a single high-speed Ethernet link. It is suitable for applications demanding precise fractional bandwidth allocation and robust error monitoring through integrated BERTs. Ensure the design accommodates the necessary external SDRAM for packet buffering and supports the required parallel microprocessor interface for system control.

Part Context

The DS33R41 belongs to the DS33X41 family of telecommunications interface ICs manufactured by Analog Devices Inc./Maxim Integrated. This series focuses on providing comprehensive solutions for mapping Ethernet traffic onto traditional digital carrier networks. The device integrates complex framing and line interfacing functions, reducing the need for external discrete components in telecom infrastructure equipment.

Replacement Considerations

Consult official cross-reference tools for parametrically similar parts. Verify that potential substitutes support the same 10/100 Ethernet MAC standards and offer comparable inverse multiplexing capabilities over T1/E1/J1 lines.