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Partname:HT2040A
Description: Christmas Light Controller
Manufacturer:Holtek Semiconductor Inc.
Datasheet:PDF (474K).
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The HT2040A is a low cost, low power CMOS LSI chip designed for use in Christmas lighting control products. It provides 4 SCR outputs to control the lamps. The lamps can display up to 10 different groups of lighting patterns, where each pattern or pattern group is chosen by appropriate input keys.

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