San Jose--June 23, 1998--Cypress Semiconductor Corp. (San Jose) introduced a 3.3 V version of the Roboclock device, the CY7B991V. It offers the same features as the original Roboclock, including programmable skew and zero propagation delay while addressing the need for 3.3-V supply voltage. It allows compensation for clock skews arising from varying circuit board trace lengths and device set-up and hold times, offering user-selectable outputs allowing multiply by two and four, divide by two and four, and invert options.
Roboclock also lets designers minimize effects such as distortion (e.g., crosstalk) and electromagnetic interference associated with the distribution of high-speed clocks in multiprocessing systems or from board to board within a system. The specifications include skew control tested and guaranteed to 500 picoseconds, with selectable skew between outputs from 700 ps to 1.5 ns. For clock buffering applications, Roboclock devices offer zero propagation delay and zero output skew. They guarantee a 50 percent duty cycle.
All key skew specifications of the Roboclock devices are tested and guaranteed, including pin-to-pin skew, propagation delay, and rise and fall time. The 3.3-V CY7B991V Roboclock is available now in production quantities. Available in 32-pin PLCC packages, the devices are offered in 500- and 750-ps accuracy versions. In 10,000-unit quantities, the 750-ps version is priced at $9.35.
Cypress Semiconductor Corp.
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