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Datasheet Replacement Marking Code
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25LC128
MM74HC139 (2)MM74HC13 (16)MM74HC1 (92)MM74HC (478)MM74 (539)MM7 (547)
Fairchild Semiconductor

MM74HC139N

Decoder/Demultiplexer 1 x 2:4 16-PDIP
Fairchild Semiconductor

MM74HC139M

Decoder/Demultiplexer 1 x 2:4 16-SOIC
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