GENERAL DESCRIPTION

The ICS83940DI is a low skew, 1-to-18 LVPECLto-LVCMOS/LVTTL Fanout Buffer and a member of the HiPerClockS™ family of High Performance Clock Solutions from ICS. The ICS83940DI has two selectable clock inputs. The PCLK, nPCLK pair can accept LVPECL, CML, or SSTL 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.

FEATURES

• 18 LVCMOS/LVTTL outputs

• Selectable LVCMOS_CLK or LVPECL clock inputs

• PCLK, nPCLK supports the following input types: LVPECL, CML, SSTL

• LVCMOS_CLK accepts the following input levels: LVCMOS or LVTTL

• Maximum output frequency: 250MHz

• Output skew: 150ps (maximum)

• Part to part skew: 750ps (maximum)

• 3.3V, 2.5V or mixed 3.3V core, 2.5V output supply modes

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

• Pin compatible with the MPC940L