| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| 74ACT521CW | 8-Bit Identity Comparator | Fairchild-Semiconductor | - | - | - | - | 80 K |
| 74ACT521MTC | 8-Bit Identity Comparator | Fairchild-Semiconductor | TSSOP | 20 | - | - | 80 K |
| 74ACT521PC | 8-Bit Identity Comparator | Fairchild-Semiconductor | MDIP | 20 | - | - | 80 K |
| 74F521MSA | 8-Bit Identity Comparator | Fairchild-Semiconductor | SSOP | 20 | - | - | 68 K |
| 74F521MSAX | 8-Bit Identity Comparator | Fairchild-Semiconductor | SSOP | 20 | - | - | 68 K |
| 74F521PC | 8-Bit Identity Comparator | Fairchild-Semiconductor | MDIP | 20 | - | - | 68 K |
| 74F521SC | 8-Bit Identity Comparator | Fairchild-Semiconductor | SOIC | 20 | - | - | 68 K |
| 74F521SCX | 8-Bit Identity Comparator | Fairchild-Semiconductor | SOIC | 20 | - | - | 68 K |
| 74F521SJ | 8-Bit Identity Comparator | Fairchild-Semiconductor | SOIC | 20 | - | - | 68 K |
| 74F521SJX | 8-Bit Identity Comparator | Fairchild-Semiconductor | SOIC | 20 | - | - | 68 K |
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