  An ASIC named CATIROC (Charge And Time Integrated Read Out Chip) has been
developed for the next-generation neutrino experiments using a large number of
photomultiplier tubes (PMTs). Each CATIROC provides the time and the charge
measurements for 16 configurable input channels operating in trigger-less mode.
Originally designed for the light emission in water Cherenkov detectors, we
show in this paper that its use can be extended to liquid-scintillator based
experiments. The $\sim$26000 3-inch PMTs of the JUNO experiment, under
construction in China, is a case in point. This paper describes the features of
CATIROC with a special attention to the most critical points for its
application to the time profile of the light emission in liquid scintillators.
The achieved performances in both charge and time measurements can be inputs
for future high-precision experiments making use of PMTs or other
photo-sensitive detectors.
