SY87700ALHG

Application Specific Clock/Timing Overview

The SY87700ALHG is a low-power, 3.3V AnyRate Clock and Data Recovery (CDR) integrated circuit designed for data rates from 32Mbps up to 208Mbps NRZ. It features two on-chip PLLs: one for clock recovery and another for clock generation. The device accepts differential PECL serial data inputs and provides recovered data and clock outputs in differential PECL format. It includes selectable reference frequencies, link fault detection, and operates within an industrial temperature range of –40°C to +85°C. The component is housed in a 32-pin EPAD-TQFP package.

Application Specific Clock/Timing Feature Summary

• Clock and data recovery for 32Mbps to 208Mbps NRZ data streams
• Dual on-chip PLLs for independent clock recovery and generation
• Differential PECL high-speed serial I/O with built-in line receivers
• Link fault indication circuit for monitoring input data stream integrity

Application Specific Clock/Timing Applications

• SONET/SDH/ATM OC-1 and OC-3 systems
• Fast Ethernet and SMPTE 259 applications
• Proprietary architecture systems operating up to 208Mbps

Application Specific Clock/Timing Procurement Notes

Verify the specific ordering suffix 'HG' corresponds to the 32-pin EPAD-TQFP package configuration as defined in the manufacturer's ordering information. Confirm that the lead finish is NiPdAu Pb-Free. Ensure the procurement documentation explicitly references the Micrel datasheet M9999-082009-D to validate the part's electrical specifications and pinout compatibility before integration.

Application Specific Clock/Timing Selection Notes

Select the SY87700ALHG when designs require operation within the 32Mbps to 208Mbps frequency range using a 3.3V supply. This component is suitable for applications needing protocol-independent clock recovery with selectable reference frequencies. Designers must account for the 32-pin EPAD-TQFP thermal requirements, ensuring the exposed pad is soldered to ground for proper heat dissipation during operation.

Application Specific Clock/Timing Part Context

The SY87700ALHG belongs to the SY87700AL family of AnyRate Clock and Data Recovery ICs manufactured by Micrel. It serves as a specialized timing solution for high-speed serial communication systems. The 'HG' suffix specifically identifies the 32-pin EPAD-TQFP package variant, distinguishing it from other package options like the 28-pin SOIC within the same functional family.

Application Specific Clock/Timing Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.