MSM80C154RS Integrated Circuit - DIP40 - OKI Semiconductor

MSM81C55-5RS Integrated Circuit - DIP40 - Rohm Semiconductor

81C55 Integrated Circuit - DIP40 - OKI Semiconductor

82C55A Integrated Circuit - DIP40 - Harris Semiconductor

MSM80C85AH-R3 Integrated Circuit - DIP40 - OKI Semiconductor

MSM81C55RS Integrated Circuit - DIP40 - OKI Semiconductor

82C53-5-SMD Integrated Circuit - SMD - OKI Semiconductor

CP82C37A5 Integrated Circuit - DIP40 - Harris Semiconductor