SN74HC138PWR

The SNx4HC138 devices are designed to be used
in high-performance memory-decoding or data-routing
applications requiring 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 using a fast enable circuit, the delay times
of these decoders and the enable time of the memory
are usually less than the typical access time of the
memory. This means that the effective system delay
introduced by the decoders is negligible.