The Stratix® IV FPGA family includes three device variants:
- Stratix IV GT FPGAs with transceivers: Up to 530K logic elements (LEs) and 48 full-duplex clock data recovery (CDR)-based transceivers at up to 11.3 Gbps
- Stratix IV GX FPGAs with transceivers: Up to 530K LEs and 48 full-duplex CDR-based transceivers at up to 8.5 Gbps
- Stratix IV E (enhanced devices) FPGAs: Up to 820K LEs, 23.1-MB RAM, and up to 1,288 18x18 multipliers
Stratix IV FPGAs offer vertical migration within each family variant, providing the most flexibility in device selection. In addition, a vertical migration path exists between Stratix III and Stratix IV E devices, so you can start designing on a Stratix III device today and move to a higher density Stratix IV E device without changing your PCB. See AN 557: Stratix III to Stratix IV E Cross-Family Migration Guidelines (PDF). Tables 1 through 3 offer an overview of the devices in the Stratix IV FPGA family.