The maximum cable length supported by the SN65C3223EDW depends on the baud rate and the type of cable used. As a general guideline, the maximum cable length for a baud rate of 9600 is around 1000 feet (305 meters), while for a baud rate of 115200, it is around 100 feet (30.5 meters). However, it's recommended to consult the TI application note 'TIA-485-A' for more detailed information on cable length and baud rate limitations.
The SN65C3223EDW is a half-duplex transceiver by default. To configure it for full-duplex operation, you need to connect the DE (driver enable) pin to VCC and the RE (receiver enable) pin to GND. For half-duplex operation, connect DE to the transmit enable signal and RE to the receive enable signal.
The minimum supply voltage for the SN65C3223EDW is 4.5V, and the maximum supply voltage is 5.5V. Operating the device outside of this range may affect its performance and reliability.
To protect the SN65C3223EDW from ESD and surge events, it's recommended to use external ESD protection devices such as TVS diodes or ESD arrays on the RS-485 bus lines. Additionally, ensure that the device is properly grounded and follow good PCB layout practices to minimize the risk of ESD damage.
Yes, the SN65C3223EDW can be used in a multi-point RS-485 network. However, it's essential to ensure that only one device is transmitting at a time to avoid data corruption and bus contention. You can use a master-slave architecture or a token-passing protocol to manage data transmission in a multi-point network.
SN65C3223EDW datasheet
by Texas Instruments
