Automotive-grade 3:8 decoder for address decoding and demultiplexing
The NXP 74HCT138PW-Q100118 is a 1 x 3:8 decoder/demultiplexer from the 74HCT family, qualified to AEC-Q100 Grade 1 for automotive applications. The three binary select inputs decode one of eight active-low outputs, with an enable input that forces all outputs high when asserted. This is the standard 74HCT138 function, but the Q100 suffix confirms the part has passed the extended reliability stress tests and PPAP requirements for automotive production programs.
Supply rails and output drive in the 5V logic domain
The 4mA source and 4mA sink output current is typical for HCT logic driving CMOS inputs or low-power loads; for driving higher fan-out or longer traces, a buffer stage after the decoder is recommended. The surface-mount package allows reflow soldering; the narrow pitch requires a controlled solder paste stencil to avoid bridging between adjacent pins.
Active production with AEC-Q100 traceability
The AEC-Q100 qualification package includes the PPAP submission and the reliability test report, which can be requested at the time of order.