The MAX3221IDBRE4 can support data rates up to 1 Mbps.
Yes, the MAX3221IDBRE4 can be used in a multi-point configuration, but it is not recommended as it may cause signal degradation and errors.
To ensure proper termination, a 1 kΩ resistor should be connected between the RIN and GND pins, and a 4.7 kΩ resistor should be connected between the ROUT and GND pins.
The recommended power-on sequence is to apply VCC first, followed by VREF, and then enable the transmitter.
Yes, the MAX3221IDBRE4 can be used in a half-duplex configuration by connecting the transmitter output to the receiver input.
MAX3221IDBRE4 datasheet
by Texas Instruments
