The FXL2SD106 is a configurable dual-voltage-supply translator designed for both uni-directional and bidirectional 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 FXL2SD106 is specifically designed as a translator to interface with the SDIO standard. I/O capacitance is managed to meet the SD maximum capacitance specification. The B side ESD performance allows interface as an external card and the part can handle 80 Mbps throughput when translating between 1.8V and 2.5V.

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 OE input, when low, disables both the A and B ports by placing them in a 3-state condition. The FXL2SD106 is designed so that both control pins (OE and CLK IN) are supplied by V_CCA.

The device senses an input signal on A or B port automatically. The input signal is transferred to the other port.

• Bi-directional interface between two levels from 1.1V to 3.6V
• Fully configurable: Inputs and outputs track V_CC level
• Non-preferential power-up; 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
• Bushold on data inputs eliminates the need for SDIO pull-up resistors
• Control input (OE and CLK IN) are referenced to V_CCA voltage
• Packaged in 16-terminal DQFN (2.5mm x 3.5mm)
• Direction control not needed
• 80 Mbps throughput when translating between 1.8V and 2.5V
• ESD protection exceeds:
• 12kV HBM (B port I/O to GND) - (per JESD22-A114 & Mil Std 883e 3015.7)
• 8kV HBM (A port I/O to GND) - (per JESD22-A114 & Mil Std 883e 3015.7)
• 1kV CDM - (per ESD STM 5.3)