The maximum cable length depends on the baud rate and the type of cable used. As a general rule, the maximum cable length is around 100 meters at 9600 bps and 10 meters at 115200 bps. However, it's recommended to consult the RS-485 standard and perform signal integrity analysis to determine the maximum cable length for a specific application.
Yes, the SN75HVD10P can be used in a multi-point configuration. However, it's essential to ensure that only one device is transmitting at a time to avoid data corruption. A common technique is to use a master-slave architecture, where the master device controls the transmission and the slave devices only respond when requested.
To prevent signal reflections, it's recommended to terminate the RS-485 bus with a 120-ohm resistor at each end of the bus. This is known as a 'stub' termination. Additionally, the termination resistors should be placed as close as possible to the transceiver devices to minimize signal reflections.
The maximum number of devices that can be connected to the RS-485 bus depends on the specific application and the type of devices used. However, as a general rule, the RS-485 standard recommends a maximum of 32 devices on the bus. It's essential to consider the total bus capacitance and the driver output impedance when designing the system.
The SN75HVD10P is a half-duplex transceiver, meaning it can only transmit or receive data at a time. It's not designed for full-duplex operation. If full-duplex operation is required, a different transceiver device should be used.
SN75HVD10P datasheet
by Texas Instruments
