FFFE (Form, Fit & Functional Equivalents)
| Description | Package | Voltage | Speed | Temperature |
|---|---|---|---|---|
| AT28C64-25PC | PDIP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64B-25PC | PDIP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64E25PC | PDIP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64X-25PC | PDIP-28 | 5.0 V | 250 NS | 0 C~+70 C |