Named 93CXX and sized at 132 KB, this PDF is listed as a schematic but appears to be a generic datasheet for 93C-series Microwire serial EEPROMs.

The 276 KB PDF here is labelled 24c04, the 4 Kbit (512-byte) two-wire serial EEPROM used widely to store configuration and calibration data.

PDF of 429 KB about the 24Cxx series of I2C serial EEPROMs, the 8b in the name likely referring to a specific edition or density group, which the name does not spell…