The LXC family is an addition to TI's Direction-controlled Level Translation portfolio. This family has a wide supply range of 1.1 V to 5.5 V making ideal for any system using common digital I/O voltages. The LXC family name comes from it being the next generation to the current popular LVC family of voltage translation devices. This allows for easy interchangeability while still maintaining the current circuit design and popular parameters like the high drive strength. However, the LXC family benefits from new design process advancments allowing it to have other improved parameters like lower power consumption making it better suited for battery powered applications. To take it a step further, the LXC family is packed with features making it robust for harsher noise environments that can be seen in both automotive and industrial systems.

This section covers the improved I/O architecture and characteristics of the LXC family. This new architecture is a piece of what makes the LXC family robust. In certain circumstances, it can also lead to a reduction in passive components. Figure 2-1 illustrates a simplified block diagram of the I/O structure along with the control circuity inputs.

As shown in Figure 2-1, the LXC family of translators have integrated pull-down resistors to help avoid floating inputs. The A-port and B-port I/O have been equipped with dynamic pull-downs that are activated when the device is disabled. The control inputs, DIR and OE, will have 5 MΩ static pull-downs always present. If the control inputs are not actively driven by an external source, the default state of the device is enabled with direction set for B to A data flow. Refer to the Feature Description section of the data sheet for more info on these pull-downs.