DC-balanced serdes reduce bit errors
Maxim Integrated Products
MAX9242, MAX9244 and MAX9246
The MAX9242, MAX9244 and MAX9246 are hot-swappable 21bit DC-balanced LVDS deserialisers with programmable spread spectrum.
Maxim Integrated Products has released the latest members of its high-speed LVDS serdes family - the MAX9242, MAX9244 and MAX9246 are hot-swappable 21bit DC-balanced LVDS deserialisers with programmable spread spectrum.
Both output clock and data are spread over a specified +/-2 or +/-4% 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 serialiser and deserialiser.
AC-coupling also provides short-to-battery protection.
These deserialisers 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.
The MAX9242, MAX9244 and MAX9246 are ideal 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 datarate is 840Mbit/s.
The MAX9242/MAX9244/MAX9246 deserialise three LVDS serial inputs into 21 single-ended LVTTL/LVCMOS outputs, and communicate over a three-wire twisted pair or differential line.
The LVDS outputs meet the requirements of the ANSI TIA/EIA 644 LVDS standard and ISO 0605 (+/-25kV air, +/-8kV contact).
These deserialisers also feature a separate output supply for interfacing to 1.8 to 5V logic-level inputs.
Hot-swappable capability increases fault tolerance and allows "on-the-fly" frequency programming.
Advanced proprietary and integrated data coding reduce EMI.
The MAX9242, MAX9244 and MAX9246 are available in 48-pin, low-profile TSSOP packages.
All devices are specified for operation from -40 to +85C.
Prices start at $4.62 (1000-up, FOB USA).
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