8.3.4 Enable and Disable
The TXS0102 has an OE input that is used to disable the device by setting OE low, which places all I/Os in the
Hi-Z state. The disable time (tdis) indicates the delay between the time when OE goes low and when the outputs
are disabled (Hi-Z). The enable time (ten) indicates the amount of time the user must allow for the one-shot
circuitry to become operational after OE is taken high.
8.3.5 Pullup or Pulldown Resistors on I/O Lines
Each A-port I/O has an internal 10-kΩ pullup resistor to VCCA, and each B-port I/O has an internal 10-kΩ pullup
resistor to VCCB. If a smaller value of pullup resistor is required, an external resistor must be added from the I/O
to VCCA or VCCB (in parallel with the internal 10-kΩ resistors). Adding lower value pull-up resistors will effect VOL
levels, however. The internal pull-ups of the TXS0102 are disabled when the OE pin is low.
8.4 Device Functional Modes
The TXS0102 device has two functional modes, enabled and disabled. To disable the device set the OE input
low, which places all I/Os in a high impedance state. Setting the OE input high will enable the device.