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Partname: | LC7456A |
Description: | U.S. Closed Caption Signal Extraction IC |
Manufacturer: | SANYO Electric Co., Ltd. |
Datasheet: | PDF (24.3K). Click here to download *) |
The LC7456A receives the composite video signal from the V / C (Video Chroma) signal processor and extracts the closed caption data. This data and a clock signal, generated by an on-chip PLL, are then sent to the decoder IC. The LC7456A is a CMOS version of the LA7945 IC also currently in production. The differences between the LA7945 and the LC7456A are a change from Bipolar to CMOS technology, a smaller package size (22 pins to 16 pins), and a reduction in the external circuitry requierd. An LC8640XX series microcontroller is needed to perform the decoding after the LC7456A has extracted the caption data from the composite video signal. |
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Click here to download LC7456A Datasheet*) |
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