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Interface devices tout ultralow voltage, I/O protection

Posted: 18 Jul 2008 ?? ?Print Version ?Bookmark and Share

Keywords:interface device? I/O protection? hot swap application?

Micrel Inc. has introduced an ultralow voltage CML product family to its growing portfolio of high performance interface products.

The initial seven products of the family, SY54011R, SY54016R/AR, SY54017R/AR and SY54023R/AR are 1.2/1.8V ultralow voltage CML output products with core power supply of 2.5V that can interface directly to devices powered by 1.2/1.8V supply. These products operate up to 3.2GHz and include a 1:2 fanout buffer, differential line driver/receiver, 2:1 mux and a 2x2 crosspoint switch. In addition, the SY54016R, SY54017R, and SY54023R offer Micrel's Fail Safe Input (FSI) circuitry.

All product AC performance is guaranteed from DC through 2.5-/3.2GHz or 3.2Gbit/s, with rise and fall times less than 95ps for all products. The product family also guarantees jitter performance to be less than 10ps p-p over temperature and voltage, operation over the full industrial temperature range of -40C to 85C.

In addition, the SY54xxx series, along with the rest of Micrel's FSI family of solutions, have been optimized to prevent unwanted oscillations and maintain output stability when an input signal's swing collapses or disappears. Unlike existing products on the market, Micrel's FSI design prevents a metastable output condition when the input signal is removed or the amplitude fails. This is especially crucial for rack-based equipment that has many I/O cards requiring hot swap capability. The product family also offers Micrel's patented 3-pin internal input termination, which simplifies designs and interfaces to any differential signal, AC- or DC-coupled.

"This new family of products is the only ultra-low voltage CML output family in the market featuring 1.2V outputs while offering excellent jitter performance," said Thomas Wong, VP high bandwidth products at Micrel. "In addition, the 1.2V operation takes low power to new heights by featuring a power reduction of up to 50 percent."

Targeted applications include clock and data distribution, hot swap applications, rack-based equipment and ATE. The devices are offered in an ultra-small 16-pin MLF package that saves critical space and provides low jitter, making the SY54xxx series suitable for high speed, low jitter designs.

All devices are currently in volume production with pricing for 1,000-unit quantities starting at $1.54. In addition, evaluation boards are available upon request and samples can now be ordered on line on Micrel's Website.





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