The ICS843001I-22 is a a highly versatile, low phase noise LVPECL/LVCMOS Synthesizer HiPerClockSTM which can generate low jitter reference clocks for a variety of communications applications and is a member of the HiPerClocksTM family of high performance clock solutions from ICS. The dual crystal interface allows the synthesizer to support up to two communications standards in a given application (i.e. 1GB Ethernet with a 25MHz crystal and 1Gb Fibre Channel using a 25.5625MHz cr ystal). The r ms phase jitter performance is typically less than 1ps, thus making the device acceptable for use in demanding applications such as OC48 SONET and 10Gb Ethernet. The ICS843001I-22 is packaged in a small 24-pin TSSOP package.