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DSA2IH00177079.pdf
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SHARP LR4089B/LR4089BN LR4089B/LR4089BN DESCRIPTION The LR4089B/LR4089BN are monolithic tone dialer LSI that uses an inexpensive crystal ref erence to provide eight audio sinusoidal frequen ci
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LR4089
LR4089B
LR4089BN