DP8421AV25 Integrated Circuit - PLCC68 - National Semiconductor - NSC

MSP3400D-B4 Integrated Circuit - PLCC68 - Micronas

CS80C286-25 Integrated Circuit - PLCC68 - Harris Semiconductor

SAA1291 Integrated Circuit - DIP - ITT Industries

MAA2300 Integrated Circuit - DIP24 - ITT Industries

MSP3400C-PS-C6 Integrated Circuit - PLCC68 - ITT Industries

MSP3410B Integrated Circuit - PLCC - ITT Industries

SPU2243 Integrated Circuit MOS - DIP - ITT Industries