DS2409 MicroLAN Coupler

The MicroLAN coupler is an essential component to build and control 1-Wire networks with multi-level branching. In contrast to approaches that Switch the ground line, the coupler maintains a common ground level for the whole network and keeps the inactive segments powered. This simplifies supplying central or local power for additional circuitry and prevents loss of status of parasitically powered devices. It also avoids disrupting Communication caused by the parasitic power supply of 1-Wire devices after activating a branch. Both the main and the auxiliary 1-Wire output are supported by a smart-on command. This command generates a reset/presence sequence on the selected output before the electronic Switch closes the contact to the 1-Wire bus. This way the bus master CAN apply a ROM function command (optionally followed by a memory function) to the devices on the just activated segment with all other devices in the network remaining deselected. This significantly speeds up the analysis of topology and population in a continuously changing network. The coupler also supports the bus master in detecting arrivals on the inactive segments of the network by responding to the conditional search command.
By Maxim Integrated Products
DS2409 's PackagesDS2409 's pdf datasheet

DS2409 Pinout, Pinouts
DS2409 pinout,Pin out
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