This 4-bit non-inverting 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
When the output-enable (OE) input is low, all outputs are placed in the high-impedance
state. 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.
The TXB0104 is designed so that the OE input circuit is supplied by
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.
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