STRATIX family comparison (novice).

I didn't look at all the products, but there should be some IO timing specification for all products. Stratix IV IO for example, the timing is specified in an excel spreadsheet "StratixIV_IO_timing_QII9p0.xls". It is at the bottom of the documentation "get literature (http://www.altera.com/literature/lit-stratix-iv.jsp)" page.

Actually, the volume 4 contains more useful information FMAX generalization. This is from Stratux IV:

I/O performance supports several system interfaces, such as the LVDS high-speed

I/O interface, external memory interface, and the PCI/PCI-X bus interface. For

example, Stratix IV device I/Os configured with voltage referenced I/O standards can

achieve up to the stated system interfacing speeds as indicated in “External Memory

Interface Specifications” on page 1–33. general-purpose i/o standards such as 3.3,

2.5, 1.8, and 1.5 lvttl/lvcmos are capable of typical 167 mhz and 1.2 lvcmos at

100mhz interfacing frequency with 10pf load.