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 |
|---|---|---|---|---|
| EM638325TS-8 | TSOP2(86) | 3.3 V | 125MHZ | 0 C~+70 C |
| HY57V643220BTC-8 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |
| HY57V643220BTC6/8 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |
| HY57V643220CLT-8 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |
| HY57V643220CT-6 TSOP86 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |
| HY57V643220CT-686 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |
| HY57V643220CT-7 #12288 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |
| HY57V643220CT-8 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |
| HY57V643220CT-85 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |
| HY57V643220CT-H12288 | TSOP2(86) | 3.3 V | 125 MHZ | 0 C~+70 C |