| Manufacturer | Part Number | Description |
|---|---|---|
National
| 74F521 | 8-Bit Identity Comparator |
Texas Instruments
| 74F521 | 8-Bit Identity Comparators |
Fairchild (now onsemi)
| 74F521 | 8-Bit Identity Comparator |
Philips Semiconductors (now NXP Semiconductors)
| 74F521 | 8-bit identity comparator |
|
Texas Instruments
| SN74F521N | 8-Bit Identity Comparators |
Motorola Semiconductor (now NXP Semiconductors)
| MC74F521 | 8-BIT IDENTITY COMPARATOR |
|
Texas Instruments
| SN74F521 | 8-Bit Identity Comparators |
