Full-duplex operation means the driver and receiver are active simultaneously, so this part handles simultaneous transmit and receive on a single twisted pair without a direction-control pin. At 150 Mbps the LVDS signalling keeps the edge rate fast enough for 10-meter cable runs at full speed, but the short propagation delay also helps close timing on backplane links shorter than a metre. The single driver/receiver pair (1/1) maps cleanly to a UART or SPI-to-LVDS bridge where only one differential channel is needed.
The base product number 65LVDS180 covers several package and temperature variants; this DG4 suffix identifies the 14-SOIC, tube-packaged, industrial-temperature grade.