T74LS273B1 Logic IC - DIP20 - ST Microelectronics - STM

T74LS244B1 Logic IC - DIP20 - ST Microelectronics - STM

M74HC273B1 Logic IC - DIP20 - ST Microelectronics - STM

T74LS240B1 Logic IC - DIP20 - ST Microelectronics - STM

L4974A Logic IC - DIP20 - ST Microelectronics - STM

T74LS20B1 Logic IC - DIP14 - ST Microelectronics - STM

T74LS393B1 Logic IC - DIP14 - ST Microelectronics - STM

T74LS151B1 Logic IC - DIP16 - ST Microelectronics - STM