Careful considerations must be made to ensure I/Os have defined voltage levels, as slow inputs will impact the one-shot for false triggering. This can result in continuous signal oscillations for high and low. With the internal 10 kΩ pull-ups of the TXS0101/2/4E devices (TXS0108E has a 40 kΩ and 4 kΩ pull-up when driving low and high respectively), inputs can be left floating. For TXB devices with inactive drivers i.e with the internal 4 kΩ in high-impedance, all unused pins are recommended to be tied to GND with >= 100 kΩ pull-downs.

Slow inputs can also lead to false triggers as observed in Figure 3-14 and Figure 3-18, which can be amplified for signal oscillations.

Figure 3-13 also show how additional loading can slow the rise and fall times. This slower rise and fall times from loading will have the potential to expire the one-shot's designed duration as observed in Figure 3-11, impacting overall signal integrity. See the data sheets for the recommended input transition rates. For more information, see the TXS and TXB level shifter families as shown in Voltage Translators and Level Shifters.