Product Summary

The CY7B991-5JC is a Programmable Skew Clock Buffer. The CY7B991-5JC offers user-selectable control over system clock functions. These multiple-output clock drivers of the CY7B991-5JC 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.

Parametrics

CY7B991-5JC absolute maximum ratings: (1)Ambient Temperature with Power Applied: –55 to +125 ℃; (2)Supply Voltage to Ground Potential: –0.5 V to +7.0 V; (3)DC Input Voltage: –0.5 V to +7.0 V; (4)Output Current into Outputs (LOW): 64 mA; (5)Static Discharge Voltage: >2001V; (6)Latch-Up Current: >200 mA.

Features

CY7B991-5JC features: (1)All output pair skew < 100 ps typical (250 max.); (2)3.75- to 80-MHz output operation; (3)User-selectable output functions; (4)Zero input to output delay; (5)50% duty-cycle outputs; (6)Outputs drive 50Ω terminated lines; (7)Low operating current; (8)32-pin PLCC/LCC package; (9)Jitter < 200 ps peak-to-peak (< 25 ps RMS); (10)Compatible with a Pentium-based processor.

Diagrams

CY7B991-5JC block diagram

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