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LVPECL/LVDS clock dividers offer fail-safe I/O protection

San Jose, Calif.—Micrel Inc. has added four divide by three and divide by five clock dividers to its clock divider product family.

The SY89228 and SY89229 are 1-GHz LVPECL/LVDS dividers that feature Fail Safe Input (FSI) circuitry and the SY89230/231 are 3.2GHz LVPECL/LVDS dividers. Targeted applications include pre-scaling functions, PLL clock generation and distribution, RF transmitters, and wireless base stations.

According to Micrel, the divide by three and divide by five clock dividers are the only clock dividers on the market that divide odd numbers and provide 50 percent duty cycle. Most dividers in the industry are even dividers, which require two times the starting frequency to provide a 50 percent duty cycle at the output. The devices are offered in an ultra-small 16-pin MLF package.

Pricing: Starts at $2.69 in 1,000-unit quantities.
Availability: Volume production.

Datasheets: sy89228u, sy89229u, sy89230u, sy89231u.

Micrel Inc., 1 408-944-0800, www.micrel.com

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