The SN65HVD20DR is an extended common-mode transceiver that enables bidirectional data communication on balanced-signal communication lines. It is a differential transceiver designed to provide a complete, low-cost, and low-power solution for communicating at speeds of up to 20 Mbps. This product contains advanced features to reduce EMI/RFI emissions and improve data integrity. The SN65HVD20DR is designed to interface directly with TTL logic and is ideal for applications such as industrial automation and instrumentation. It features full RS-485 signaling, including encoding and decoding of the differential signals. Additionally, its high-impedance bus pins support daisy-chaining and allow up to 32 devices to be connected on one bus. This product is a highly reliable and cost effective solution for RS-485 communications, making it a great choice for both commercial and industrial applications.