The LMH1251 emerges as the industry’s first video decoder with an integrated 2:1 multiplexing switch that uses analog technology to convert standard and high-definition (YPbPr) signals to a computer (RGB) format. It also performs all necessary sync processing to generate horizontal and vertical sync signals; conversion is within 1% accuracy based on vector scope analysis. The device accepts one set of YPbPr inputs and one set of RGB/HSync/VSync inputs. Via the 2:1 MUX and based on the input selected, the output will be either TV or buffered video. The 400-MHz RGB path accepts resolutions up to UXGA, while the YPbPr path specifies a 70-MHz bandwidth. The chip employs smart video detection that automatically senses 480i, 480p, 720p, 1080i, and 1080p video. Available in a TSSOP-24 package, price is $3.49 each/1,000 Lead-free packages are also available. NATIONAL SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.
Company: NATIONAL SEMICONDUCTOR CORP.
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