GENERAL DESCRIPTION

The ICS83940-01 is a low skew, 1-to-18 Fanout Buffer and a member of the HiPerClockS? family of High Performance Clock Solutions from ICS. The low impedance LVCMOS outputs are designed to drive 50? series or parallel terminated transmission lines. The effective fanout can be in creased from 18 to 36 by utilizing the ability of the outputs to drive two series terminated lines.

The ICS83940-01 is characterized at full 3.3V, full 2.5V and mixed 3.3V input and 2.5V output operating supply modes. Guaranteed output and part-to-part skew characteristics make the ICS83940 ideal for those clock distribution applications demanding well defined performance and repeatability.

FEATURES

? Eighteen LVCMOS/LVTTL outputs, 23Ω typical output impedance

? Selectable LVCMOS_CLK or LVPECL clock inputs

? LVCMOS_CLK supports the following input types:

LVCMOS or LVTTL

? PCLK, nPCLK supports the following input types:

LVPECL, CML, SSTL

? Maximum output frequency: 250MHz

? Output skew: 85ps (maximum)

? Part-to-part skew: 750ps (maximum)

? Full 3.3V, 2.5V or mixed 3.3V, 2.5V supply modes

? 0°C to 70°C ambient operating temperature

? Available in lead-free RoHS compliant package