HC55185DIM Integrated Circuit - PLCC28 - Intel

IS82C54 Integrated Circuit - PLCC28 - Intersil

100311QC Integrated Circuit - PLCC28 - Fairchild Semiconductor

F100302QC Integrated Circuit - PLCC28 - Fairchild Semiconductor

100313QC Integrated Circuit - PLCC28 - National Semiconductor - NSC

100329QC Integrated Circuit - PLCC28 - Fairchild Semiconductor

ML4661CQ Integrated Circuit - PLCC28 - Micro Linear

MC100H607 Integrated Circuit - PLCC28 - ON Semiconductor