The MAX3471 draws only 1.6µA (typical) supply current from a 3.6V supply with the receiver enabled and the driver disabled. Its wide 2.5V to 5.5V supply voltage guarantees operation over the lifetime of a lithium battery.
This device contains one driver and one receiver. Its true fail-safe receiver input guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when they are connected to a terminated transmission line with all drivers disabled.
The MAX3471 receiver operates at up to 64kbps and incorporates input filtering in addition to input hysteresis. This filtering enhances noise immunity when differential signals have very slow rise and fall times.
There are two pairs of screw terminals on board the RS485 2 click. The ones marked with A and B are differential high and differential low communication lines. We added two more terminals for VCC and GND reference if needed for further interfacing.
|Applications||Battery-Powered Differential Communications|
|On-board modules||MAX3471 half-duplex transceiver|
|Key Features||1.6µA Supply Current with Receiver Enabled; intended for lithium battery-powered RS-485/RS-422 applications.|
|Input Voltage||3.3V or 5V|
|Click board size||L (57.15 x 25.4 mm)|
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