DM74LS138数据手册(飞兆半导体)

These Schottky-clamped circuits are designed to be used,in high-performance memory-decoding or data-rouTIngapplicaTIons, requiring very short propagaTIon delay TImes.In high-performance memory systems these decoders canbe used to minimize the effects of system decoding. Whenused with high-speed memories, the delay times of thesedecoders are usually less than the typical access time ofthe memory. This means that the effective system delayintroduced by the decoder is negligible