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Optoelectronics/Displays??

DisplayPort-to-HDMI level-shifter drives legacy displays

Posted: 03 Mar 2008 ?? ?Print Version ?Bookmark and Share

Keywords:quad differential? input to current-mode logic translator? DisplayPort? HDMI/DVI? level shifter?

Maxim Integrated Products has introduced a high-speed, low-skew, quad differential input to current-mode logic (CML) translator DisplayPort-to-HDMI/DVI level shifter.

This device enables PCs with a DisplayPort output to directly drive an HDMI/DVI-capable display, such as an LCD screen.

The MAX9406 thus provides PC and graphics card manufacturers the flexibility to design for the DisplayPort specification, while supporting legacy HDMI/DVI displays through a low-cost level shifter. Additionally, it can level shift a differential video data stream driven through a PCIe card to drive an HDMI/DVI display. This capability enables alternate PC motherboard configurations, such as an add-on HDMI/DVI PCIe-based solution.

The MAX9406 provides 5V to 3.3V bidirectional level shifting for the I?C-compatible display data channel pins and 5V to 3.3V level shifting for the hot-plug detection pin. This high-performance device features low 0.56psRMS added random jitter, a 2Gbit/s (max) data rate, an ultra-low 350ps propagation delay, and channel-to-channel skew of 20ps. Additionally, the inputs integrate 50? terminations and a self-biased common mode. The 48-pin version of the MAX9406 is function and pin compatible with Intel Corp.'s HDMI level-shifter specification.

The device is available in 5mm x 5mm, 32-pin and 7mm x 7mm, 48-pin TQFN packages, the MAX9406 is fully specified over the -40C to +85C extended temperature range. Prices start at $1.30 for orders of 1,000 units and up (FOB USA).

Maxim is one of the exhibitors in the upcoming IIC-China 2008.




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