Reading isolated multichannel input with voltage drop on all channels
Yes, they are designed to work with 24 VDC (maximum safe voltage). With 8 per tiny SMD package, you need 3 of these ICs to solve your interface problem.

These are the most space efficient parts I know of. Not often interfaces have more than 8 channels.

You can pack them end-to-end, 3 in a row. Be sure to follow manufacture specs for board layout and decoupling capacitors. Use a linear voltage regulator so power supply is quiet. Not enough current consumed to justify a noisy switching power supply.