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 1.2V to 3.6V.
The B port is designed to track VCCB. VCCB accepts any supply
voltage from 1.65V to 5.5V. This allows for universal low-voltage bidirectional
translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V 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 TXB0108 is designed 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.
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 1.2V to 3.6V.
The B port is designed to track VCCB. VCCB accepts any supply
voltage from 1.65V to 5.5V. This allows for universal low-voltage bidirectional
translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V 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 TXB0108 is designed 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.