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Datasheet Replacement Marking Code
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25LC128
MM74HC6 (7)MM74HC (478)MM74 (539)MM7 (547)
Fairchild Semiconductor

MM74HC688N

Magnitude Comparator 8 Bit Active Low Output A=B 20-PDIP
Fairchild Semiconductor

MM74HC688WM

Magnitude Comparator 8 Bit Active Low Output A=B 20-SOIC
Fairchild Semiconductor

MM74HC688WMX

Magnitude Comparator 8 Bit Active Low Output A=B 20-SOIC
Fairchild Semiconductor

MM74HC688MTCX

Magnitude Comparator 8 Bit Active Low Output A=B 20-TSSOP
Fairchild Semiconductor

MM74HC688MTC

Magnitude Comparator 8 Bit Active Low Output A=B 20-TSSOP
Fairchild Semiconductor

MM74HC688SJX

Magnitude Comparator 8 Bit Active Low Output A=B 20-SOP
Fairchild Semiconductor

MM74HC688SJ

Magnitude Comparator 8 Bit Active Low Output A=B 20-SOP
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