| Компонент | Описание | Производитель | PDF | Buy |
| 74F521 | 8-bit identity comparator | NXP Semiconductors |  |  |
| 74F521 | 8-Bit Identity Comparator | Fairchild Semiconductor | | |
| SN74F521 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| 74F521CW | 8-Bit Identity Comparator | Fairchild Semiconductor | | |
| N74F521D | 8-bit identity comparator | NXP Semiconductors | | |
| SN74F521DW | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DW | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DW | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| MC74F521DW | 8-bit identity comparator | Motorola, Inc | | |
| SN74F521DWE4 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DWE4 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DWG4 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DWR | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DWR | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DWRE4 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DWRE4 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| SN74F521DWRG4 | 8-BIT IDENTITY COMPARATORS | Texas Instruments | | |
| 74F521MSA | 8-Bit Identity Comparator | National Semiconductor | | |
