The Stratix® IV FPGA family includes three device variants:

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.

With 40 nm Stratix® IV FPGAs you can reach new levels of system-on-a-chip (SoC) integration. Building on the advanced, proven Stratix III architecture, Stratix IV FPGAs deliver a high-density, feature-rich and high-performance core fabric. Combined with flexible I/Os, high-bandwidth transceivers, and memory interfaces, Stratix IV FPGAs meet the requirements for high-end digital systems in wireless, wireline, military, broadcast, and other market segments.

Stratix IV Architecture