The NXB family of devices adds even more features to the NXS family. There is no pass transistor as in the LSF and NXS families, the outputs are push-pull stages instead of open drain with pull-up resistors, one-shot circuits for both rising and falling edge acceleration in both directions, and a weak buffer with a 4 kΩ resistor is used to drive the signals and not conflict with the edge accelerators. Like the NXS and LSF families, the higher voltage should be attached to the B-side. The output Enable signal powers the one-shot circuits and the output buffers.