| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| IDT54FCT521CLB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | LCC | 20 | -55°C | 125°C | IDT54FCT521CLB datasheet (102K) |
| IDT54FCT521CP | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | DIP | 20 | -55°C | 125°C | IDT54FCT521CP datasheet (102K) |
| IDT54FCT521CPB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | DIP | 20 | -55°C | 125°C | IDT54FCT521CPB datasheet (102K) |
| IDT54FCT521CSO | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | SOIC | 20 | -55°C | 125°C | IDT54FCT521CSO datasheet (102K) |
| IDT54FCT521CSOB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | SOIC | 20 | -55°C | 125°C | IDT54FCT521CSOB datasheet (102K) |
| IDT54FCT521CTD | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERDIP | 20 | -55°C | 125°C | IDT54FCT521CTD datasheet (100K) |
| IDT54FCT521CTDB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERDIP | 20 | -55°C | 125°C | IDT54FCT521CTDB datasheet (100K) |
| IDT54FCT521CTE | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521CTE datasheet (100K) |
| IDT54FCT521CTEB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521CTEB datasheet (100K) |
| IDT54FCT521CTL | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | LCC | 20 | -55°C | 125°C | IDT54FCT521CTL datasheet (100K) |
