
Cypress Semiconductor
Functional Description
The CY7B9911V 3.3V RoboClock+ High-Speed Low-Voltage Programmable Skew Clock Buffer (LVPSCB) offers user selectable control over system clock functions. These multipleoutput clock drivers provide the system integrator with functions necessary to optimize the timing of high-performance computer systems. Eight individual drivers, arranged as four pairs of user-controllable outputs, can each drive terminated transmission lines with impedances as low as 50Ω while delivering minimal and specified output skews and full-swing logic levels (LVTTL).
FEATUREs
• All output pair skew <100 ps typical (250 max.)
• 3.75- to 110-MHz output operation
• User-selectable output functions
— Selectable skew to 18 ns
— Inverted and non-inverted
— Operation at 1⁄2 and 1⁄4 input frequency
— Operation at 2x and 4x input frequency (input as low as 3.75 MHz)
• Zero input-to-output delay
• 50% duty-cycle outputs
• LVTTL outputs drive 50Ω terminated lines
• Operates from a single 3.3V supply
• Low operating current
• 32-pin PLCC package
• Jitter < 200 ps peak-to-peak (< 25 ps RMS)