General Description

The ICS8535I-21 is a low skew, high performance

1-to-2 LVCMOS/LVTTL-to-3.3V LVPECL fanout

buffer and a member of the HiPerClockS™ family of

High Performance Clock Solutions from IDT. The

ICS8535I-21 has two single-ended clock inputs. The

single-ended clock input accepts LVCMOS or LVTTL input levels

and translate them to 3.3V LVPECL levels. The clock enable is

internally synchronized to eliminate runt clock pulses on the output

during asynchronous assertion/deassertion of the clock enable

pin.

Guaranteed output and part-to-part skew characteristics make the

ICS8535I-21 ideal for those applications demanding well defined

performance and repeatability.

Features

• Two differential 3.3V LVPECL outputs

• Selectable CLK0 or CLK1 inputs for redundant and multiple

frequency fanout applications

• CLK0 or CLK1 can accept the following input levels:

LVCMOS or LVTTL

• Maximum output frequency: 266MHz

• Translates LVCMOS and LVTTL levels to 3.3V LVPECL levels

• Output skew: 20ps (maximum)

• Part-to-part skew: 300ps (maximum)

• Propagation delay: 1.6ns (maximum)

• Additive phase jitter, RMS: 0.03ps (typical)

• 3.3V operating supply

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

• Available in lead-free (RoHS 6) package