ZHCSCJ8E June 2014 – April 2019 SN65HVD1470 , SN65HVD1471 , SN65HVD1473 , SN65HVD1474 , SN65HVD1476 , SN65HVD1477
PRODUCTION DATA.
The SN65HVD147x family consists of full-duplex RS-485 transceivers commonly used for asynchronous data transmissions. Full-duplex implementation requires two signal pairs (four wires), and allows each node to transmit data on one pair while simultaneously receiving data on the other pair.
To eliminate line reflections, each cable end is terminated with a termination resistor, R(T), whose value matches the characteristic impedance, Z0, of the cable. This method, known as parallel termination, allows for higher data rates over longer cable length.