DS21354LB

Telecom Overview

The DS21354LB is a single-chip transceiver designed for E1 and HDLC telecommunications interfaces. It operates within a supply voltage range of 3.14V to 3.47V, with a typical operating voltage of 3.3V. The device draws a maximum supply current of 75mA and supports data rates up to 2.048 Mb/s. It is housed in a 100-LQFP package measuring 14x14 mm and is rated for an industrial operating temperature range from -40°C to +85°C.

Telecom Feature Summary

• Integrates complete line interface unit functionality for E1 networks
• Supports High-level Data Link Control (HDLC) protocol processing
• Provides integrated elastic store capabilities for clock recovery

Telecom Applications

• E1 Line Interface Units (LIUs)
• Digital cross-connect systems
• Network synchronization equipment

Telecom Procurement Notes

Verify component authenticity through authorized Analog Devices channels due to discontinuation status. Confirm RoHS compliance and moisture sensitivity level requirements during storage and handling. Review the Product Discontinuance Notification for specific end-of-life timelines and last-time buy information before finalizing procurement plans.

Telecom Selection Notes

Select this component when designing for E1 physical layer connectivity requiring integrated HDLC support. Ensure the design accommodates the specified 3.3V power domain and 100-pin LQFP footprint. Consider thermal management strategies suitable for the -40°C to +85°C industrial grade environment.

Telecom Part Context

This part belongs to the Maxim Integrated DS21354 family of single-chip transceivers. It serves as a specialized interface solution for digital telecommunication networks, specifically targeting E1 standards. The device consolidates multiple discrete functions into a single integrated circuit to reduce board space and complexity.

Telecom Replacement Considerations

The DS21354LN is a verified equivalent offering identical electrical specifications but with an extended commercial temperature range of 0°C to 70°C. Verify that the reduced temperature tolerance meets the operational requirements of the target application environment.