The MAX323CUA+T can support data rates up to 250kbps, but it's recommended to limit the data rate to 120kbps for reliable operation.
Yes, the MAX323CUA+T is compatible with 3.3V systems, but you'll need to ensure that the VCC pin is connected to a 3.3V power supply and that the input signals are within the recommended voltage range.
To enter shutdown mode, drive the SHDN pin low. In shutdown mode, the device consumes very low power and the transmitter and receiver are disabled. To exit shutdown mode, drive the SHDN pin high.
To minimize noise and ensure reliable operation, it's recommended to follow a star topology for the RS-232 signals, keep the signal traces short and away from power traces, and use a ground plane to reduce electromagnetic interference (EMI).
Yes, the MAX323CUA+T can be used in a multi-point RS-232 application, but you'll need to ensure that the device is properly terminated and that the signal lines are properly buffered to prevent signal degradation.