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产品规格：电议
产品数量：电议 个
包装说明：8SOP
关 键 词：HOLTEK
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发布时间：2012-03-18
HT9020B -- Call Progress Tone Detector General Description The HT9020B call progress tone detector is a telecom peripheral for Auto-dialing system use. Switched capacitors technology is implemented into the chip to get good performance characteristics of band pass filter in the range of 305 to 6
