The FXL4TD245 is a configurable 4-bit dual-voltage supply translator designed for both uni-directional and bi-directional voltage translation between two logic levels. The device allows translation between voltages as high as 3.6V to as low as 1.1V. The A Port tracks the V_CCA level, and the B Port tracks the V_CCB level. This allows for bi-directional voltage translation over a variety of voltage levels: 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The device remains in 3-STATE until both V_CCs reach active levels allowing either V_CC to be powered-up first. Internal power down control circuits place the device in 3-STATE if either V_CC is removed. The Transmit/Receive (T/R) input determines the direction of data flow through the device. The OE input, when HIGH, disables both the A and B Ports by placing them in a 3-STATE condition. The FXL4TD245 is designed so that the control pins (T/R and OE) are supplied by V_CCA.

• Bi-directional interface between any 2 levels from 1.1V to 3.6V
• Fully configurable: Inputs track V_CC level
• Non-preferential power-up sequencing; either V_CC may be powered-up first
• Outputs remain in 3-STATE until active V_CC level is reached
• Outputs switch to 3-STATE if either V_CC is at GND
• Power-off protection
• Control inputs (T/R n, OE) levels are referenced to V_CCA voltage
• Packaged in 16-Terminal DQFN (2.5mm x 3.5mm)