GENERAL DESCRIPTION

The ICS853054 is an 4:1 Differential-to-3.3V or 2.5V LVPECL/ECL Clock Multiplexer which can operate up to 2.5GHz and is a member of the HiPerClockS? family of High Performance Clock Solutions from ICS. The ICS853054 has 4 selectable differential clock inputs. The PCLKx, nPCLKx input pairs can accept LVPECL, LVDS, CML or SSTL levels. The fully differential architecture and low propagation delay make it ideal for use in clock distribution circuits. The select pins have internal pulldown resistors. The SEL1 pin is the most significant bit and the binary number applied to the select pins will select the same numbered data input (i.e., 00 selects PCLK0, nPCLK0).

FEATURES

? High speed 4:1 differential multiplexer

? One differential 3.3V or 2.5V LVPECL output

? Four selectable differential PCLK, nPCLK inputs

? PCLKx, nPCLKx pairs can accept the following differential input levels: LVPECL, LVDS, CML, SSTL

? Maximum output frequency: 3.2GHz

? Translates any single ended input signal to LVPECL levels with resistor bias on nPCLKx input

? Part-to-part skew: TBD

? Propagation delay: 465ps (typical)

? Additive phase jitter, RMS: 0.238ps (typical)

? LVPECL mode operating voltage supply range: VCC = 2.375V to 3.465V, VEE = 0V

? ECL mode operating voltage supply range: VCC = 0V, VEE = -3.465V to -2.375V

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

? Available in both standard and lead-free RoHS-compliant packages