PC16552DV Integrated Circuit - PLCC - National Semiconductor - NSC

MM5056H Integrated Circuit - TO99 - National Semiconductor - NSC

NSC810AV4I Integrated Circuit - PLCC44 - National Semiconductor - NSC

MM5260D Integrated Circuit - DIP16 - National Semiconductor - NSC

LM1972N Integrated Circuit - DIP20 - National Semiconductor - NSC

NS16550AFV Integrated Circuit - PLCC44 - National Semiconductor - NSC

NSC800N Integrated Circuit - DIP40 - National Semiconductor - NSC

NSC800N4I Integrated Circuit - DIP40 - National Semiconductor - NSC