Active 3:8 decoder — 74HC family, wide supply range
The onsemi MC74HC238ADTR2G is a single 3:8 decoder/demultiplexer from the 74HC high-speed CMOS logic family. It accepts a 3-bit binary input and selects one of eight active-high outputs, commonly used in memory address decoding, data routing, and control signal demultiplexing in digital systems. Output drive capability is 5.2 mA source and 5.2 mA sink at the rated supply — sufficient for driving CMOS inputs or low-power LED indicators directly without a buffer.
Package and board-fit — 16-TSSOP surface mount
The 16-TSSOP footprint is common across the 74HC family, easing layout reuse if a different decoder variant is qualified later. CT works for prototyping and low-quantity builds.