FAQ: Logic and Voltage Translation > Auto-Bidirectional Level-Shifters > Fixed DIR / DIR CNTRL Level-Shifters >> Current FAQ
Choosing a high drive strength device depends on the below:
- Static DC drive strength: Drive required for a constant HIGH / LOW i.e. driving LEDs for example. See data sheet specifications for IOH and IOL spec.
- Transient drive strength: Drive required to (dis)charge high capacitive loads i.e. faster transition times indicates high transient drive. See data sheet specifications for rise / fall times.
For more information, see Understanding Transient Drive Strength vs. DC Drive Strength in CMOS Output Buffers