Description
The ICS571 is a high speed, high output drive, low phase noise Zero Delay Buffer (ZDB) which integrates IDT’s proprietary analog/digital Phase Locked Loop (PLL) techniques. IDT introduced the world standard for these devices in 1992 with the debut of the AV9170, and updated that with the ICS570. The ICS571, part of IDT’s ClockBlocks™ family, was designed to operate at higher frequencies, with faster rise and fall times, and with lower phase noise. The zero delay feature means that the rising edge of the input clock aligns with the rising edges of both outputs, giving the appearance of no delay through the device. There are two outputs on the chip, one being a low-skew divide by two of the other.

Features
• Packaged in 8-pin SOIC (Pb free)
• Can function as low phase noise x2 multiplier
• Low skew outputs. One is ÷2 of other
• Input clock frequency up to 160 MHz at 3.3 V
• Phase noise of better than -100 dBc/Hz from 1 kHz to 1 MHz offset from carrier
• Can recover poor input clock duty cycle
• Output clock duty cycle of 45/55 at 3.3 V
• High drive strength for >100 MHz outputs
• Full CMOS clock swings with 25 mA drive capability at TTL levels
• Advanced, low power CMOS process
• Operating voltages of 3.0 to 5.5 V