The SNx4AHC138 decoders/demultiplexers
are designed for high-performance memory-decoding and data-routing applications that
require very short propagation-delay times. In high-performance memory systems,
these decoders can be used to minimize the effects of system decoding. When employed
with high-speed memories utilizing a fast enable circuit, the delay times of these
decoders and the enable time of the memory usually are less than the typical access
time of the memory. This means that the effective system delay introduced by the
decoders is negligible.