TC74HC4538AF(F),
TC74HC4538AF-ELF,IC MULTIVIBRATOR 25NS 16SOP
TC74HC4538AP(F),
TC74HC540AF(F),
TC74HC540AP(F),
TC74HC541AF,缓冲器和线路驱动器 Octal BUS Buffer Tri-State
TC74HC541AF(EL,F),IC BUFFER NON-INVERT 6V 20SOP
