SY87701V

Micrel, Inc. 5V/3.3V 32-1250Mbps AnyRate® CLOCK AND DATA RECOVERY SY87701V SY87701V Use lower-power SY87701AL for 3.3V systems FEATURES s 3.3V and 5V power supply options s Clock and data recovery from 32Mbps up to 1.25Gbps NRZ data stream, clock generation from 32Mbps to 1.25Gbps s Complies with Bellcore, ITU/CCITT and ANSI specifications for applications such as OC-1, OC-3, OC-12, ATM, FDDI, Fibre Channel and Gigabit Ethernet, as well as proprietary applications s Two on-chip PLLs: one for clock generation and another for clock recovery s Selectable reference frequencies s Differential PECL high-speed serial I/O s Line receiver input: no external buffering needed s Link fault indication s 100K ECL compatible I/O s Available in 32-pin EPAD-TQFP and 28-pin SOIC packages (28-pin SOIC is available, but not recommended for new designs, see page 2 for details APPLICATIONS AnyRate® DESCRIPTION The SY87701V is a complete Clock Recovery and Data Retiming integrated circuit for data rates from 32Mbps up to 1.25Gbps NRZ. The device is ideally suited for SONET/SDH/ATM and Fibre Channel applications and other high-speed data transmission systems. Clock recovery and data retiming is performed by synchronizing the on-chip VCO directly to the incoming data stream. The VCO center frequency is controlled by the reference clock frequency and the selected divide ratio. On-chip clock generation is performed through the use of a frequency multiplier PLL with a byte rate source as reference...