| 74F521CW | 8-Bit Identity Comparator | Datasheet*) |
| 74F521MSA | 8-Bit Identity Comparator in 20-pin SSOP package. | Datasheet*) |
| 74F521MSAX | 8-Bit Identity Comparator in 20-pin SSOP package. | Datasheet*) |
| 74F521PC | 8-Bit Identity Comparator in 20-pin MDIP package. | Datasheet*) |
| 74F521SC | 8-Bit Identity Comparator in 20-pin SOIC package. | Datasheet*) |
| 74F521SCX | 8-Bit Identity Comparator in 20-pin SOIC package. | Datasheet*) |
| 74F521SJ | 8-Bit Identity Comparator in 20-pin SOIC package. | Datasheet*) |
| 74F521SJX | 8-Bit Identity Comparator in 20-pin SOIC package. | Datasheet*) |
| 74F521 | 8-Bit Identity Comparator | Datasheet*) |
| 74F521SCX_NL | 8-Bit Identity Comparator in 20-pin SOIC-Wide package. | Datasheet*) |
There are other manufacturers for this components. For more information please check
74F521 (National Semiconductor)
74F521 (Philips Semiconductors)
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