| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| IDT54FCT521BLB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | LCC | 20 | -55°C | 125°C | IDT54FCT521BLB datasheet (102K) |
| IDT54FCT521BP | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | DIP | 20 | -55°C | 125°C | IDT54FCT521BP datasheet (102K) |
| IDT54FCT521BPB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | DIP | 20 | -55°C | 125°C | IDT54FCT521BPB datasheet (102K) |
| IDT54FCT521BSO | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | SOIC | 20 | -55°C | 125°C | IDT54FCT521BSO datasheet (102K) |
| IDT54FCT521BSOB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | SOIC | 20 | -55°C | 125°C | IDT54FCT521BSOB datasheet (102K) |
| IDT54FCT521BTD | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERDIP | 20 | -55°C | 125°C | IDT54FCT521BTD datasheet (100K) |
| IDT54FCT521BTDB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERDIP | 20 | -55°C | 125°C | IDT54FCT521BTDB datasheet (100K) |
| IDT54FCT521BTE | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521BTE datasheet (100K) |
| IDT54FCT521BTEB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521BTEB datasheet (100K) |
| IDT54FCT521BTL | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | LCC | 20 | -55°C | 125°C | IDT54FCT521BTL datasheet (100K) |
