Fujitsu MB501 MB504 8-DIP 1.1GHz or 520MHz Frequency Divider Prescaler
[Fujitsu MB501 ( 1GHz) or MB504 (520MHz) 8-DIP Frequency Divider / Prescaler. 520MHz MB504 supports ÷ 32, 33, 64, 65. If this is important, I'll try to respond to requests. Most are MB501.]. 1.1GHz MB501 supports ÷ 64, 65, 128, 129.