MM74HC623WM MM74HC640AN MM74HC640AWM MM74HC640N MM74HC643AN MM74HC643N MM74HC646N MM74HC646WM MM74HC648N MM74HC648SMD MM74HC648WM MM74HC6555M MM74HC688 MM74HC688AN MM74HC688M MM74HC688MTC MM74HC688MTCX MM74HC688MTC_Q MM74HC688N MM74HC688N 74HC521 MM74HC688N /MC74HC521N MM74HC688N(MC74HC521N) MM74HC688N-MC74HC521N MM74HC688N-ND MM74HC688N-NL MM74HC688N/MC74HC521N MM74HC688N/MC74HT521N MM74HC688N74HC521 MM74HC688NNL MM74HC688N_F091 MM74HC688N_NL MM74HC688N_Q MM74HC688SJ MM74HC688SJX MM74HC688SJ_Q MM74HC688WM MM74HC688WMX MM74HC688WMX_NL MM74HC688WMX_SF501676 MM74HC688WMX_SF501694 MM74HC688WM_NL MM74HC688WM_Q MM74HC68N MM74HC68WM MM74HC7 MM74HC700MTCX MM74HC70560X MM74HC705M MM74HC7240A MM74HC7245WMX MM74HC726 MM74HC7266M MM74HC7266N MM74HC7266N-MC74HC7266N MM74HC7292N MM74HC73J MM74HC73M MM74HC73MX MM74HC73N MM74HC73N-MC74HC73N MM74HC74 MM74HC744WM MM74HC74A MM74HC74ACW MM74HC74AD MM74HC74AH MM74HC74AJ MM74HC74AM MM74HC74AM-ND MM74HC74AM-NL MM74HC74AM-X MM74HC74AM/FSC MM74HC74AMSMD MM74HC74AMT MM74HC74AMTC MM74HC74AMTCX MM74HC74AMTCX-NL MM74HC74AMTCXNL MM74HC74AMTCX_F042 MM74HC74AMTCX_F40 MM74HC74AMTCX_NF042 MM74HC74AMTCX_NF40 MM74HC74AMTCX_NL MM74HC74AMTCX_Q MM74HC74AMX MM74HC74AMX SMD MM74HC74AMX(HSMRKD) MM74HC74AMX-NL MM74HC74AMXHSMRKD MM74HC74AMX_F094 MM74HC74AMX_F40 MM74HC74AMX_NF40