yes, we could help with one of these drop-in-alternatives for the below requested parts:
AT28C64B-15TI as former ATMEL IC EEPROM 64kbit PARALLEL in 28TSOP is already Obsoleted by Microchip Technology.
CAT28C64BH1312, CAT28C64BT13I-15T or CAT28C64BH1390 as Ex-Catalyst IC EEPROM 64 kbit PARALLEL in 28TSOP belong now to onsemi and are just offered as fully backward compatible Marketplace E²Proms via Rochester-Electronics.