1.2 V to 3.6 V on A Port and 1.65 to 5.5 V on B Port (VCCA ≤ VCCB)VCC Isolation Feature — If Either VCC Input Is at GND, All Outputs Are in the High-Impedance StateOE Input Circuit Referenced to VCCALow Power Consumption, 4-µA Max ICCIoff Supports Partial-Power-Down Mode OperationLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 22 A Port 2000-V Human-Body Model (A114-B) 200-V Machine Model (A115-A) 1000-V Charged-Device Model (C101) B Port ±15-kV Human-Body Model (A114-B) 200-V Machine Model (A115-A) 1000-V Charged-Device Model (C101) DESCRIPTION/ORDERING INFORMATION This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply 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 for universal 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 exceed VCCB. When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The TXB0101 is desinged so that the OE input circuit is supplied by VCCA. This device is fully specified for partial-power-down applications using Ioff. 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 to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.