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74AC139

The 7400 series of chips perform transistor-transistor logic. The 74AC139 is a " high-speed, dual 1-of-4 decoder/demultiplexer". It appears on SNES PCBs with flash memory chips.

74AC139
Chip type: 74AC139
Manufacturer: Toshiba
Date format: YYWWx
Variables: Date code

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