| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| IDT54FCT521BTLB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | LCC | 20 | -55°C | 125°C | IDT54FCT521BTLB datasheet (100K) |
| IDT54FCT521BTP | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | SSOP | 20 | -55°C | 125°C | IDT54FCT521BTP datasheet (100K) |
| IDT54FCT521BTPB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | SSOP | 20 | -55°C | 125°C | IDT54FCT521BTPB datasheet (100K) |
| IDT54FCT521BTQ | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | QSOP | 20 | -55°C | 125°C | IDT54FCT521BTQ datasheet (100K) |
| IDT54FCT521BTQB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | QSOP | 20 | -55°C | 125°C | IDT54FCT521BTQB datasheet (100K) |
| IDT54FCT521BTSO | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | SOIC | 20 | -55°C | 125°C | IDT54FCT521BTSO datasheet (100K) |
| IDT54FCT521CD | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERDIP | 20 | -55°C | 125°C | IDT54FCT521CD datasheet (102K) |
| IDT54FCT521CDB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERDIP | 20 | -55°C | 125°C | IDT54FCT521CDB datasheet (102K) |
| IDT54FCT521CEB | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | CERPACK | 20 | -55°C | 125°C | IDT54FCT521CEB datasheet (102K) |
| IDT54FCT521CL | Fast CMOS 8-bit identity comparator | Integrated Device Technology, Inc. | LCC | 20 | -55°C | 125°C | IDT54FCT521CL datasheet (102K) |
