Minimum number of power supply decoupling capacitors required

What is the minimum number of decoupling capacitors required
for e2v Broadband Data Conversion devices?

It is recommended to decouple each power supply by a couple
of a 10nF capacitor in parallel to a 100pF capacitor.
A simple rule of thumb defines this minimum number of
recommended capacitors as the number of groups
of neighboring pins.
Example: TS81102G0 DMUX device pin configuration
and power supply decoupling configuration.