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LVDS deserializers reduce EMI

Posted: 14 Feb 2006 ?? ?Print Version ?Bookmark and Share

Keywords:MAX9242? MAX9244? MAX9246? deserializers? Maxim Integrated Products?

Maxim Integrated Products introduced the latest members of its high-speed LVDS SerDes family, which are hot-swappable, 21-bit, DC-balanced LVDS deserializers with programmable spread spectrum.

According to the company, both output clock and data of the new products are spread over a specified 2 percent or 4 percent range to reduce EMI. DC-balancing reduces bit errors from a change in the common mode caused by ground shift. This feature allows AC-coupling of outputs and allows isolation between serializer and deserializer. AC-coupling also provides short-to-battery protection.

Maxim added that the MAX9242, MAX9244 and MAX9246 deserializers reduce the number of wires or traces from 22 to 8, simplifying design and saving space and cost in system interconnects such as cables and backplanes. These new devices are designed for driving 800 x 480 resolution displays in automotive navigation and entertainment systems, digital copiers, and laser printers. When operating at 40MHz clock speed, the maximum aggregate payload data rate is 840Mbps.

The MAX9242, MAX9244 and MAX9246 deserialize three LVDS serial inputs into 21 single-ended TTL/LVCMOS outputs, and communicate over a 3-wire twisted pair or differential line. The LVDS outputs meet the requirements of the ANSI TIA/EIA 644 LVDS standard and ISO 10605 (25kV air, 8kV contact). These products also feature a separate output supply for interfacing to 1.8V to 5V logic-level inputs.

The new deserializers are available in a 48-pin, low-profile TSSOP package. All devices are specified for operation from -40C to 85C. Prices start at $4.62 (1,000-up, FOB USA).

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