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M74HC390M1R M74HC390B1R M74HC377M1R M74HC377B1R M74HC374M1R
M74HC377B1R【IC FF D-TYPE SNGL 8BIT 20DIP】
M74HC374B1R M74HC374RM13TR M74HC377B1R M74HC393B1R
原M74HC374B1R M74HC377RM13TR M74HC4017RM13TR M74HC4020B1R