The NLSX4014 is a 4 bit configurable dual supply bidirectional level translator without a direction control pin. The I/O VCC- and I/O VL ports are designed to track two different power supply rails, VCC and VL respectively. The VCC supply rail is configurable from 1.3 V to 4.5 V while the VL supply rail is configurable from 0.9 V to (VCC - 0.4) V. This allows lower voltage logic signals on the VL side to be translated into higher voltage logic signals on the VCC side, and vice versa. Both I/O ports are auto sensing; thus, no direction pin is required. The Output Enable (EN) input, when Low, disables both I/O ports by putting them in 3 state. This significantly reduces the supply currents from both VCC and VL. The EN signal is designed to track VL.