That datasheet is unclear about what exactly is required to get that 1GHz+ performance; my naive reading is that the CL=2pF case is half of another gate's input

That datasheet is unclear about what exactly is required to get that 1GHz+ performance; my naive reading is that the CL=2pF case is half of another gate's input capacitance, which seems implausible. OTOH, if CMOS compatibility isn't a problem you can go waaaaay faster with things like this: https://www.analog.com/en/products/hmc746.html https://www.analog.com/en/products/hmc746.html Single gate per package, but supports 10+Gbps data rates. 290mW per gate power consumption o_O