DS26518GNB1+

Drivers, Receivers, Transceivers Overview

The DS26518GNB1+ is an 8-port framer and line interface unit (LIU) combination for T1, E1, and J1 applications. It operates within a temperature range of -40°C to +85°C and utilizes a 256-pin TE-CSBGA package. The device supports independent port configuration for long-haul and short-haul lines. Operating voltages are specified at 1.71 V to 1.89 V and 3.135 V to 3.465 V. It provides eight complete transceivers with software-selectable impedance matching for various twisted pair and coaxial applications.

Drivers, Receivers, Transceivers Feature Summary

• Eight independently configurable T1, E1, or J1 transceivers combining LIU and framer functions
• Software-selectable transmit and receive-side termination for 100Ω, 110Ω, 120Ω, and 75Ω impedances
• Crystal-less jitter attenuators meeting ETS CTR 12/13, ITU-T G.736, G.742, G.823, and AT&T Pub 62411 standards
• Hitless protection switching capability for network redundancy

Drivers, Receivers, Transceivers Applications

• Routers
• Channel Service Units (CSUs)
• Data Service Units (DSUs)
• Muxes
• Switches

Drivers, Receivers, Transceivers Procurement Notes

Verify the component against official Analog Devices documentation to confirm lead-free status and RoHS compliance associated with the plus suffix. Ensure the specific TE-CSBGA package dimensions match the design constraints. Confirm that the operating voltage requirements align with the system power supply specifications before finalizing procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component when an 8-channel solution is required for T1, E1, or J1 networks. It serves as a software and pinout compatible upgrade to the 4-port DS26514. Consider its nearly software-compatible nature with the DS26528 derivatives if migrating from existing designs. Verify support for required framing formats such as D4, SLC-96, ESF, and CRC-4 multiframe.

Drivers, Receivers, Transceivers Part Context

This device belongs to the Maxim Integrated telecommunications interface family. It integrates framer and line interface unit functionalities into a single chip. The part number indicates a commercial temperature grade and a lead-free construction. It is designed for high-density telecom equipment requiring multiple synchronized serial interfaces.

Drivers, Receivers, Transceivers Replacement Considerations

The DS26514 is a 4-port variant with software and pinout compatibility. The DS26528 offers nearly software compatibility. Verify register mapping and initialization sequences when substituting these parts.