The Intersil CP82C89 is a CMOS Bus Arbiter designed for multi-master system bus control and arbitration. It operates within a voltage range of 4.5V to 5.5V.
The Broadcom Limited HCTL-2021-A00 is a specialized interface IC designed for encoder to microprocessor communication. It operates within a 4.5V to 5.5V supply range and comes in a 20-DIP package.