GENERAL DESCRIPTION

The ICS8308I is a low-skew, 1-to-8 Fanout Buffer and a member of the HiPerClockS™family of High Performance Clock Solutions from IDT. The ICS8308I has two selectable clock inputs. The CLK, nCLK pair can accept most differential input levels. The LVCMOS_CLK can accept LVCMOS or LVTTL input levels. The low impedance LVCMOS/LVTTL outputs are designed to drive 50Ω series or parallel terminated transmission lines. The effective fanout can be increased from 8 to 16 by utilizing the ability of the outputs to drive two series terminated transmission lines.

FEATURES

• Eight LVCMOS/LVTTL outputs, (7Ω typical output impedance)

• Selectable LVCMOS_CLK or differential CLK, nCLK inputs

• CLK, nCLK pair can accept the following differential input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL

• Maximum Output Frequency: 350MHz

• Output Skew: (3.3V± 5): 100ps (maximum)

• Part to Part Skew: (3.3V± 5): 1ns (maximum)

• Supply Voltage Modes: (Core/Output)

3.3V/3.3V

3.3V/2.5V

2.5V/2.5V

• -40°C to 85°C ambient operating temperature

• Available in both standard (RoHS 5) and lead-free (RoHS 6) packages