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 |
|---|---|---|---|---|
| HY57V643220BTC6 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220C(L)T-6 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220C7-6 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220CCT-6 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220CLT-61 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220CP-6 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220CT-46 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220CT-6 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220CT-6 #160 #16 | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |
| HY57V643220CT-6 X | TSOP2(86) | 3.3 V | 166 MHZ | 0 C~+70 C |