Some alternatives are to use :-
OW-IO-DIO8 - Octal Discrete Input & Output
from Embedded data system but at R800 for 8 channels as compared to R125 for one DS2323 this may only be worth the
value if you have multiple counters required in one location which you may have with a weather station eg counters for rain, wind speed and lightning. I am not sure but the fact that this item is on back order may mean that it uses DS2423 chips!
- BAE0910 Multi-function 1-wire slave deviceR300 from Brain4Home Automation