SY87701LHG

Application Specific Clock/Timing Overview

The SY87701LHG is a Clock and Data Recovery (CDR) integrated circuit manufactured by Microchip Technology, operating on a 3.3V supply within the industrial temperature range of –40°C to +85°C. It supports data rates from 32Mbps up to 1.25Gbps for NRZ streams. The device features two on-chip PLLs for clock generation and recovery, selectable reference frequencies, and differential PECL high-speed serial I/O. It complies with Bellcore, ITU/CCITT, and ANSI specifications. The component is housed in a 32-pin EPAD-TQFP package.

Application Specific Clock/Timing Feature Summary

• Supports AnyRate® clock and data recovery from 32Mbps to 1.25Gbps
• Includes two on-chip PLLs: one for clock generation and another for clock recovery
• Complies with Bellcore GR-253-CORE, ITU-T G.958, and ANSI specifications
• Features link fault indication and ECL 100k compatible I/O

Application Specific Clock/Timing Applications

• SONET/SDH/ATM OC-1, OC-3, OC-12, OC-24
• Fibre Channel, Escon, SMPTE 259
• Gigabit Ethernet/Fast Ethernet

Application Specific Clock/Timing Procurement Notes

Verify the Pb-Free status and lead finish when ordering. The suffix HG indicates a 32-pin EPAD-TQFP package with NiPdAu finish. Confirm availability as distribution channels may vary. Ensure compliance with RoHS directives if required for the specific application environment.

Application Specific Clock/Timing Selection Notes

Select the SY87701LHG for designs requiring protocol-independent CDR up to 1.25Gbps. Use this part instead of the SOIC variant for new designs due to thermal performance. Ensure the design accommodates the 32-pin TQFP footprint and exposed pad thermal requirements.

Application Specific Clock/Timing Part Context

The SY87701LHG belongs to the SY87701L family of AnyRate CDRs. It is the Pb-free, 32-pin TQFP version of the SY87701LHI. The manufacturer recommends using lower-power variants like the SY87701AL for new designs.

Application Specific Clock/Timing Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.