The DS1245Y-70 can support up to 4096 devices on a single 1-Wire bus, but the actual number of devices that can be connected depends on the specific application, cable length, and noise conditions.
The DS1245Y-70 has an internal voltage regulator that can tolerate power supply noise and voltage fluctuations within the specified operating range (2.7V to 5.5V). However, it's recommended to use a decoupling capacitor and a voltage regulator with a low dropout voltage to ensure stable operation.
The maximum cable length for the 1-Wire bus depends on the specific application, cable type, and noise conditions. As a general guideline, Dallas Semiconductor recommends keeping the cable length below 100 meters. However, longer cable lengths can be achieved with the use of repeaters or active bus extenders.
The DS1245Y-70 uses a unique 64-bit ROM ID to identify each device on the 1-Wire bus. The ROM ID is used to address and identify devices, and it's stored in a non-volatile memory within the device.
The DS1245Y-70 has a data transfer rate of up to 16.3 kbps, which is sufficient for most applications. However, the actual data transfer rate may be limited by the specific application, cable length, and noise conditions.