MM54HC273J883C Integrated Circuit - DIP20 - National Semiconductor - NSC

MM74C374J Integrated Circuit - DIP20 - National Semiconductor - NSC

MM54HC374J883C Integrated Circuit - DIP20 - National Semiconductor - NSC

MM74C373N Integrated Circuit - DIP20 - National Semiconductor - NSC

MM74HC149N Logic IC - DIP20 - National Semiconductor - NSC

DM74LS471N Logic IC - DIP20 - National Semiconductor - NSC

DM74AS240N Logic IC - DIP20 - National Semiconductor - NSC

DM74ALS1244N Logic IC - DIP20 - National Semiconductor - NSC