| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| IDT54FCT521E | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521E datasheet (102K) |
| IDT54FCT521EB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521EB datasheet (102K) |
| IDT54FCT521L | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | LCC | 20 | -55°C | 125°C | IDT54FCT521L datasheet (102K) |
| IDT54FCT521LB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | LCC | 20 | -55°C | 125°C | IDT54FCT521LB datasheet (102K) |
| IDT54FCT521PB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | DIP | 20 | -55°C | 125°C | IDT54FCT521PB datasheet (102K) |
| IDT54FCT521SOB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | SOIC | 20 | -55°C | 125°C | IDT54FCT521SOB datasheet (102K) |
| IDT54FCT521TD | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERDIP | 20 | -55°C | 125°C | IDT54FCT521TD datasheet (100K) |
| IDT54FCT521TDB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERDIP | 20 | -55°C | 125°C | IDT54FCT521TDB datasheet (100K) |
| IDT54FCT521TE | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521TE datasheet (100K) |
| IDT54FCT521TEB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521TEB datasheet (100K) |
