DS26502L+

Overview

The DS26502L+ is a building-integrated timing-supply (BITS) clock-recovery element and basic T1/E1 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 3.13V to 3.46V and supports an operating temperature range of 0°C to +70°C. The device is housed in a 64-LQFP package with dimensions of 10mm x 10mm. It functions as a clock recovery unit, accepting input clocks such as T1, E1, 64kHz composite clock, and 6312kHz synchronization interfaces, and provides corresponding clock outputs.

Feature Summary

• Supports T1, E1, J1, and 64KCC synchronization interfaces with rate conversion capabilities between inbound and outbound rates.
• Includes a jitter attenuator for T1/E1 modes that can be placed in the receive or transmit path or disabled.
• Features software-selectable internal termination for 75Ω, 100Ω, 110Ω, and 120Ω lines.
• Provides Synchronization Status Message (SSM) transmission and reception for T1 and E1 modes.

Applications

• Building-Integrated Timing-Supply (BITS) timing systems
• Synchronization rate conversion
• T1/E1 line interface units

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm the specific suffix 'L' corresponds to the commercial temperature range (0°C to +70°C). Check for any documented errata associated with this revision before integration into final designs.

Selection Notes

Select the DS26502L+ when a BITS element supporting T1, E1, and Japanese J1 standards is required. Ensure the design environment accommodates the 3.3V supply voltage and 64-pin LQFP footprint. Verify that the application requires the specific commercial temperature range rather than the industrial grade (-40°C to +85°C) offered by the DS26502LN variant.

Part Context

The DS26502L+ belongs to the DS26502 series of T1/E1/J1/64KCC BITS elements. It is part of the broader portfolio of timing and interface ICs from Analog Devices/Maxim Integrated designed for telecommunications infrastructure. The 'L' suffix denotes the commercial temperature range variant, distinct from the 'LN' industrial version.

Replacement Considerations

The DS26502LN serves as the industrial temperature range equivalent. No other direct cross-model replacements are confirmed in the provided documentation.