74S138 Overview
These Schottky-clamped circuits 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 used with high-speed memories, the delay times of these decoders are usually less than the typical access time of the memory.
74S138 Key Features
- DM74S139
- G2 = G2A + G2B H = HIGH level L = LOW level X = don’t care (either LOW or HIGH logic level)