DS26502LN+

Overview

The DS26502LN+ is a BITS clock-recovery element and basic T1/E1 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 3.135V to 3.465V and supports an operating temperature range of -40°C to +85°C. The device is housed in a 64-LQFP package (10x10mm). It features a single circuit with a maximum frequency of 6.312MHz, utilizing a PLL for clock recovery from T1, E1, J1, and 64KCC interfaces.

Feature Summary

• Supports T1, E1, J1, and 64KCC synchronization interfaces with G.703 compliance
• Includes a crystal-less jitter attenuator with bypass mode
• Features software-selectable internal termination for 75Ω, 100Ω, 110Ω, and 120Ω lines
• Provides SSM recovery and transmission with message validation

Applications

• Building-Integrated Timing-Supply (BITS) timing systems
• Synchronization rate conversion between different clock standards
• T1/E1 line interface units for short- and long-haul applications

Procurement Notes

Verify the specific suffix 'LN+' against the manufacturer's current product status documentation. Confirm that the extended industrial temperature range (-40°C to +85°C) aligns with the design requirements, as standard variants may differ. Ensure compatibility with the 3.3V supply voltage and 5V-tolerant I/O levels specified in the datasheet.

Selection Notes

Select this component when a combined clock recovery and T1/E1 transceiver function is required. The DS26502LN+ is distinguished by its wider operating temperature range compared to the commercial grade variant. Consider the available control interfaces, including parallel, serial (SPI), and hardware controller ports, for system integration flexibility.

Part Context

The DS26502 series includes the DS26502L (commercial grade) and DS26502LN (industrial grade). The '+' suffix indicates RoHS compliance. Both variants share identical electrical specifications and pinouts but differ in their qualified operating temperature ranges.

Replacement Considerations

The DS26502L serves as the commercial-grade equivalent with a 0°C to +70°C range. Verify if the extended temperature capability of the LN+ variant is necessary for the specific application environment before substituting.