FFFE/互通料號 (形式，腳位和功能對等)
| IC 編號 | 脚位/封装 | 電壓(伏) | 速度 | 溫度規格 |
|---|---|---|---|---|
| AT28C64-25SC ATM | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64-25T1 | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64-25TC | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64-25TCSL766 | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64B-25T1 | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64B-25TC | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64B-25TZ | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64B25T1 | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |
| AT28C64E25TC | TSOP-28 | 5.0 V | 250 NS | 0 C~+70 C |