Description

Product details

The 74HC138D is a high-speed Si-gate CMOS 3-to-8 line decoder/demultiplexer, designed for decoding 3 binary address inputs into 8 mutually exclusive active-LOW outputs. It features three enable pins (two active-LOW, one active-HIGH) for easy expansion, operates between 2.0V and 6.0V, and is commonly used for memory chip selection. Function: 3-to-8 line decoding or 1-to-8 demultiplexing. Outputs: Active-LOW (outputs are normally HIGH unless selected). Supply Voltage ((V_{CC})): 2.0V to 6.0V. Enable Inputs: 3 inputs ((E1, E2, E3)) for parallel expansion to 1-of-32 decoding. Speed: High-speed CMOS performance (typically 41ns propagation delay at 2V). Operating Temperature: -40 to +125. Package: 16-pin SOIC (Small Outline Integrated Circuit). Logic Family: 74HC.