DS2409P

The DS2409P MicroLAN coupler by Analog Devices / Maxim Integrated is an essential component for constructing and managing 1-Wire MicroLAN networks with multi-level branching capabilities. Unlike other methods that switch the ground line, this coupler maintains a common ground for the entire network and keeps inactive segments powered, simplifying power distribution and preventing status loss for parasitically powered devices. It avoids communication disruptions caused by parasitic power supply issues when activating a branch.

This device features a 1-Wire interface and operates within a voltage range of 4.5V to 5.5V. It communicates at speeds up to 16.3kbits per second. The coupler supports conditional search for fast-event signaling and includes an auxiliary 1-Wire line for connecting memory chips or as a digital input. It also provides a programmable, general-purpose open-drain control output.

The DS2409P is housed in a compact, low-cost 6-pin TSOC surface mount package. Its operating temperature range is from -40°C to +85°C, making it suitable for various environmental conditions. The unique 64-bit registration number ensures absolute traceability, as no two parts are alike. This component is crucial for simplifying network topology analysis by logically decoupling devices on active network segments.