MCM6264CNP20 Integrated Circuit - DIP28 - Motorola Semiconductor

NMC27C256BQ200 Integrated Circuit - DIP28 - National Semiconductor - NSC

NM27C256Q150 Integrated Circuit - DIP28 - National Semiconductor - NSC

NMC27C256QE250 Integrated Circuit - DIP28 - National Semiconductor - NSC

NMC27C256BQ250 Integrated Circuit - DIP28 - National Semiconductor - NSC

NMC27C64Q250 Integrated Circuit - DIP28 - National Semiconductor - NSC

TDA3030B Integrated Circuit - DIP28 - Motorola Semiconductor

MCM6206NP15 Integrated Circuit - DIP28 - Motorola Semiconductor