• 1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V onB Port (VCCA≤VCCB)

• VCC Isolation Feature – If Either VCCInput Is at GND, All Outputs Are in the High-Impedance State

• OE Input Circuit Referenced to VCCA

• Low Power Consumption, 4-μA Max ICC

• Ioff Supports Partial-Power-Down Mode Operation

• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II

• ESD Protection Exceeds JESD 22

• ±15-kV Human-Body Model (A114-B)

• ±8-kV Human-Body Model (A114-B)(YZP Package Only)

• 1000-V Charged-Device Model (C101)

• 2000-V Human-Body Model (A114-B)

• 1000-V Charged-Device Model (C101)

• A Port

• B Port

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This 8-bit noninverting translator uses two separate configurable power-supply rails. TheA port is designed to track VCCA. VCCA accepts anysupply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB.VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows foruniversal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V,3.3-V, and 5-V voltage nodes. VCCA should not exceedVCCB.

When the output-enable (OE) input is low, all outputs are placed in the high-impedancestate.

The TXB0108 is designed so that the OE input circuit is supplied byVCCA.

This device is fully specified for partial-power-down applications usingIoff. The Ioff circuitry disables the outputs,preventing damaging current backflow through the device when it is powered down.

To ensure the high-impedance state during power-up or power-down, OE should be tied toGND through a pulldown resistor; the minimum value of the resistor is determined by thecurrent-sourcing capability of the driver.